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charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: FR2P281MB1527.DEUP281.PROD.OUTLOOK.COM X-MS-Exchange-CrossTenant-Network-Message-Id: 1c6fc0b7-2b0a-4c96-900a-08da13bf9e84 X-MS-Exchange-CrossTenant-originalarrivaltime: 01 Apr 2022 09:11:34.4422 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: bde4dffc-4b60-4cf6-8b04-a5eeb25f5c4f X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: lrkFmHuwVO5b1Xi/LaqY64MoQTY3jQ5CvQRoafmjvZEWr37TEp8BzNBZrW+uLt/FNUO0tZXzGqTG+AQnPBoz/eqVP14DvPNVV2nUEN/Z1uw= X-MS-Exchange-Transport-CrossTenantHeadersStamped: FR2P281MB0484 X-OriginatorOrg: telekom.de Archived-At: Subject: [spring] [ippm] FW: New Version Notification for draft-filsfils-spring-path-tracing-00.txt X-BeenThere: spring@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Source Packet Routing in NetworkinG \(SPRING\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 01 Apr 2022 09:13:46 -0000 Hi Ahmed, Thanks for the draft. I appreciate the small and well specified format of t= he measurement and hope that endpoints and transit routers supporting Path = Tracing in SRv6 networks are able to fill in the specified fields at linera= te during forwarding. I'd also appreciate an SR-MPLS version of the draft. I'd suggest to add more text related to the following statement: Note: all routers across the network MUST have time- synchronization. The mechanism used for time synchronization is out of the scope of this draft. An operator should be able to qualify an applicable time-synchronisation by= guidance of the draft. If Truncated Timestamp configuration depends on the= precision of time synchronization, guidance for interested operators shoul= d be part of the draft. The choice of timestamp resolution may further depe= nd on locally configured buffers. A Truncated Timestamp working well in the= absence of congestion, but creating erroneous information with the onset o= f congestion might not be desired. Maybe a discussion on wrapping / overflo= w may help too. Finally, the precision of the synchronization needs to be m= onitored. That may be done out of band, but centralized processing should = be aware of timestamps created by a router with (temporarily) bad synch. A = temporal change in precision of or a loss of synch are common networking s= ynch-events. While the mechanism used for time synchronization doesn't need to be define= d in the draft, a reference to some applicable synchronization mechanisms w= ould be helpful. The list doesn't have to be complete, please add some comm= odity examples. Editorial nit: To me, a binding "Requirement" shouldn't be a "Note". Regards, Ruediger On Wed, Mar 9, 2022 at 4:14 PM Ahmed Abdelsalam (ahabdels) wrote: > > Dear SPRING WG, IPPM WG, > > We have submitted a new I-D for Path Tracing in SRv6 networks (https://da= tatracker.ietf.org/doc/html/draft-filsfils-spring-path-tracing) to SPRING W= G. > We are looking for your feedback and comments. > Path Tracing provides a record of the packet path as a sequence of interf= ace ids. In addition, it provides a record of end-to-end delay, per-hop del= ay, and load on each egress interface along the packet delivery path to fac= ilitate operation of SR networks. > > > > Path Tracing allows to trace 14 hops with only a 40-octet IPv6 Hop-by-Hop= extension header. > > > We will present Path Tracing to the SPRING WG at next IETF=20 > (https://datatracker.ietf.org/meeting/113/materials/agenda-113-spring- > 00.txt) > > > > Thanks, > > Ahmed > > > > From: internet-drafts@ietf.org > Date: Friday, 4 March 2022 at 16:48 > To: Ahmed Abdelsalam (ahabdels) , cf(mailer list)=20 > , Mark Yufit , Pablo Camarillo=20 > (pcamaril) , Pablo Camarillo (pcamaril)=20 > , Satoru Matsushima=20 > , Thomas.Graf=20 > , Yuanchao Su > Subject: New Version Notification for=20 > draft-filsfils-spring-path-tracing-00.txt > > > A new version of I-D, draft-filsfils-spring-path-tracing-00.txt > has been successfully submitted by Pablo Camarillo Garvia and posted=20 > to the IETF repository. > > Name: draft-filsfils-spring-path-tracing > Revision: 00 > Title: Path Tracing in SRv6 networks > Document date: 2022-03-04 > Group: Individual Submission > Pages: 15 > URL: https://www.ietf.org/archive/id/draft-filsfils-spring-pat= h-tracing-00.txt > Status: https://datatracker.ietf.org/doc/draft-filsfils-spring-pa= th-tracing/ > Htmlized: https://datatracker.ietf.org/doc/html/draft-filsfils-spri= ng-path-tracing > > > Abstract: > Path Tracing provides a record of the packet path as a sequence of > interface ids. In addition, it provides a record of end-to-end > delay, per-hop delay, and load on each egress interface along the > packet delivery path. > > Path Tracing allows to trace 14 hops with only a 40-bytes IPv6 Hop- > by-Hop extension header. > > Path Tracing supports fine grained timestamp. It has been designed > for linerate hardware implementation in the base pipeline. > > > > > The IETF Secretariat > > _______________________________________________ > ippm mailing list > ippm@ietf.org > https://www.ietf.org/mailman/listinfo/ippm _______________________________________________ ippm mailing list ippm@ietf.org https://www.ietf.org/mailman/listinfo/ippm From nobody Sun Apr 3 03:26:00 2022 Return-Path: X-Original-To: spring@ietfa.amsl.com Delivered-To: spring@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 490163A1B78 for ; Sun, 3 Apr 2022 03:25:57 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.109 X-Spam-Level: X-Spam-Status: No, score=-2.109 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, HTML_MESSAGE=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); 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charset="us-ascii" Content-Transfer-Encoding: quoted-printable If the uSID length is 16 then function length in case of uA,uDT,uDX must be= 16 ? If the uSID length is 32 then function length in case of uA,uDT,uDX must be= 32? Juniper Business Use Only --_000_SA1PR05MB82106B0F9BA3046F85B63C8CBEE29SA1PR05MB8210namp_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

If= the uSID length is 16 then function length in case of uA,uDT,uDX= must be 16 ?

If= the uSID length is 32 then function length in case of uA,uDT,uDX= must be 32?

 


Juniper Business= Use Only

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charset="us-ascii" Content-Transfer-Encoding: quoted-printable Also section 4.2.1.1 and section 4.2.2.1 Algorithm =3D 0 (or other) how to mention in BGP. is it a mistake ? Juniper Business Use Only From: spring On Behalf Of Rajesh M Sent: Sunday, April 3, 2022 3:56 PM To: spring@ietf.org Subject: [spring] draft-filsfils-spring-net-pgm-extension-srv6-usid-12 [External Email. Be cautious of content] If the uSID length is 16 then function length in case of uA,uDT,uDX must be= 16 ? If the uSID length is 32 then function length in case of uA,uDT,uDX must be= 32? Juniper Business Use Only --_000_SA1PR05MB82102AA917BE5F01B6AC4556BEE29SA1PR05MB8210namp_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Also section 4.2.1.1 and section 4.2.2.1<= /p>

 

Algorithm =3D 0 (or other) how to mention in BGP.  is it a mis= take ?

 

 

 

Juniper Business Use Only

From: spring <spring-bounces@ietf.org> = On Behalf Of Rajesh M
Sent: Sunday, April 3, 2022 3:56 PM
To: spring@ietf.org
Subject: [spring] draft-filsfils-spring-net-pgm-extension-srv6-usid-= 12

 

<= span style=3D"font-size:10.5pt;font-family:"Lato",sans-serif;colo= r:black">[External Email. Be cautious of content]

 

If the uSID len= gth is 16 then function length in case of uA,uDT,uDX must be 16 ?

If the uSID len= gth is 32 then function length in case of uA,uDT,uDX must be 32?=

 <= /p>

 

Juniper Business Use Only

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charset="us-ascii" Content-Transfer-Encoding: quoted-printable Hi Rajesh, Algorithm is not directly carried in draft-bess-srv6-services, b= ut its use is described in section 5 of that draft. The text you quote look= s like a mistake to me. Darren On 2022-04-03, 9:44 AM, "spring" wrote: Also section 4.2.1.1 and section 4.2.2.1 Algorithm =3D 0 (or other) how to mention in BGP. is it a mistake ? Juniper Business Use Only From: spring On Behalf Of Rajesh M Sent: Sunday, April 3, 2022 3:56 PM To: spring@ietf.org Subject: [spring] draft-filsfils-spring-net-pgm-extension-srv6-usid-12 [External Email. Be cautious of content] If the uSID length is 16 then function length in case of uA,uDT,uDX must be= 16 ? If the uSID length is 32 then function length in case of uA,uDT,uDX must be= 32? Juniper Business Use Only --_000_BL1PR11MB5366E1CF58D920115E3B080AC8E59BL1PR11MB5366namp_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Hi Rajesh, Algorithm is not dir= ectly carried in draft-bess-srv6-services, but its use is described in sect= ion 5 of that draft. The text you quote looks like a mistake to me.

 

Darren

 

 

On= 2022-04-03, 9:44 AM, "spring" <spring-bounces@ietf.org> wr= ote:

 

Al= so section 4.2.1.1 and section 4.2.2.1

 

Algorithm =3D 0 (or oth= er) how to mention in BGP.  is it a mistake ?

&n= bsp;

&n= bsp;

&n= bsp;

Juniper Business= Use Only

From: spring <spring-bounces@ietf.org&g= t; On Behalf Of Rajesh M
Sent: Sunday, April 3, 2022 3:56 PM
To: spring@ietf.org
Subject: [spring] draft-filsfils-spring-net-pgm-extension-srv6-usid-= 12

&n= bsp;

[External Email. Be cautious of content]=

&n= bsp;

If the uSID length is 16 then function length in case of uA,uDT,uDX must be= 16 ?

If the uSID length is 32 then function length in case of uA,uDT,uDX must be= 32?

 

&n= bsp;

Juniper Business= Use Only

--_000_BL1PR11MB5366E1CF58D920115E3B080AC8E59BL1PR11MB5366namp_-- From nobody Mon Apr 4 09:48:10 2022 Return-Path: X-Original-To: spring@ietfa.amsl.com Delivered-To: spring@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 660223A0D65; Mon, 4 Apr 2022 09:47:58 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.107 X-Spam-Level: X-Spam-Status: No, score=-2.107 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id qoBege6301Qc; Mon, 4 Apr 2022 09:47:53 -0700 (PDT) Received: from mail-vs1-xe30.google.com (mail-vs1-xe30.google.com [IPv6:2607:f8b0:4864:20::e30]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id D7A9C3A0D3C; Mon, 4 Apr 2022 09:47:52 -0700 (PDT) Received: by mail-vs1-xe30.google.com with SMTP id n5so9843871vsc.4; Mon, 04 Apr 2022 09:47:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=NICwQBCfJHNzYsKJkAKbtSMdzKiOnyVbUmWV1PlHHko=; b=BrWprBO8joBfM9M4nuKKeDrn9IvgnQFeGBg10RC8ElY56Xf1FOdTKBco+HoTLQKb27 5MJALKQuEJyCVTWFepsntP44pg4x5Z8oMY9Y9FaZ8jXLw1Driucm3VYePB9AooHc+MqS S1iTjA1N96ZTtvZSzuHBgnRBJood4FMpfCxsZ0lIlYn0UmBLa16RGeopMC7GGUvU0dNu js3zwhQBVcI6BoOnvSLBoy6yZfn713DrAFOxx6lcVerB7nYBDE0AeOYzJtUs9KVWgXu/ lC/wOUBFf4nO46q5EN+2ptr32mTZPzuAo/xtXTA76jW8Mly4pUivkgxx/o9pt3oLzydp Fb/w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=NICwQBCfJHNzYsKJkAKbtSMdzKiOnyVbUmWV1PlHHko=; b=ynfff2y0Hmiw5oEGyEwODF2leY3f30yBxD7ilketVH8rFxJ4xixhqg6v/AQaqhQAs6 R1kfZX8HOlVcqJhcT7eDlLmpcjBSbPgKXpUcFU0f5GYmMhfFSpItyvWf9uegSQ53OO4u acvTs2pnTfXi/IfRQKHmqR8W2Ezj2NrlGxT5aayCtVCVBOls4WhrjE9tc95YqoOnyX01 VNoQn2CYlea+6cF/nBgJvArhJMVQWZiRHiify/grnOzQKsPKJO79MW63XPMe4HneRr82 yV7Cav3hpjRDKAX1gHgCevhnodbV2Bjfq7w6/HIZsdtzv99lCpu8NLowDaeGUG2e//Vq T/yA== X-Gm-Message-State: AOAM533oeEiwQwChAWic7DLEE0As1pN4MNQohrfPNlqQuQZz+4cdehc4 iLQJlvNMagEb/WKsmKwrBMEsRUC1q4tJ9GH2QgI= X-Google-Smtp-Source: ABdhPJxmbvEG9ODyoRwXgdnpezjLyTunncrkKXH3hTHK0R8TsXK4mDy4S35uY352/7Z6lX0qLY20tzamC51TU3oMjuo= X-Received: by 2002:a67:b24d:0:b0:327:dd90:ec43 with SMTP id s13-20020a67b24d000000b00327dd90ec43mr335804vsh.15.1649090871358; Mon, 04 Apr 2022 09:47:51 -0700 (PDT) MIME-Version: 1.0 References: <202203301703500769671@zte.com.cn> In-Reply-To: <202203301703500769671@zte.com.cn> From: Ketan Talaulikar Date: Mon, 4 Apr 2022 22:17:39 +0530 Message-ID: To: liu.yao71@zte.com.cn Cc: SPRING WG , idr@ietf.org Content-Type: multipart/alternative; boundary="00000000000096f80c05dbd6e3c4" Archived-At: Subject: Re: [spring] SID Related Algorithm in draft-peng-idr-segment-routing-te-policy-attr X-BeenThere: spring@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Source Packet Routing in NetworkinG \(SPRING\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 04 Apr 2022 16:48:04 -0000 --00000000000096f80c05dbd6e3c4 Content-Type: text/plain; charset="UTF-8" Hi Yao, Please check inline below. On Wed, Mar 30, 2022 at 2:34 PM wrote: > Hi all, > > We presented > https://datatracker.ietf.org/doc/draft-peng-idr-segment-routing-te-policy-attr > on IDR's session last week. > This document defines two kinds of new Segment Sub-TLVs to carry SID > related algorithm when delivering SR Policy via BGP. One is for SR-MPLS > adjacency with algorithm, another kind is defined for carrying the algo > along with the SR-MPLS or SRv6 SID value. > KT> This work is introducing new Segment Types over what is being specified in https://datatracker.ietf.org/doc/html/draft-ietf-spring-segment-routing-policy-22#section-4 and hence I believe at least a review in SPRING WG would be useful. > > While we believe that the former kind is necessary, considering > draft-ietf-lsr-algorithm-related-adjacency-sid complements that in > scenarios where multiple algorithm share the same link resource, the > algorithm can be also included as part of an Adj-SID advertisement for > SR-MPLS. KT> I agree. That LSR draft is extending the algorithm which was associated with Prefixes by RFC8402 to now also adjacency SID and would also benefit from SPRING WG review. I do believe there is a use case for algorithm-specific adjacency SID. Therefore, I see there is a case for the introduction of the new Segment Types M, N, O, and P that is being proposed by you in draft-peng-idr-segment-routing-te-policy-attr. > > We'd like to request the WG's opinion especially about the delivering > SR-MPLS or SRv6 SID value with optional algorithm. (Thanks for Ketan's > suggestion about this.) > Segment Sub-TLVs carrying SID value with optional algorithm are defined in > this draft because we think it may benefit the scenarios below: > Scenario 1: For verification purposes. The headend can check if the SID > value and the related algorithm received can be found in its SR-DB if > requested to do so. > Scenario 2: The headend may not know about the SID-related algorithm > especially in the inter-domain scenario. Providing the algorithm info > benefits troubleshooting and network management. > KT> I do not see the point of the Segment Types L and Q that are proposed in your document. I fail to understand what is meant by validation or troubleshooting here. I will point to Sec 4 and 5 of draft-ietf-spring-segment-routing-policy for details on how the segment types are validated/used. When the SID is specified as a label or SRv6 SID directly, then the controller has already done its resolution and identified the SID. I don't see the point in complicating these "simple" types that are the most widely deployed and used ones. Thanks, Ketan > > Any comments and suggestions are welcome. > > Thanks, > Yao > --00000000000096f80c05dbd6e3c4 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hi Yao,

Please check i= nline below.

On Wed, Mar 30, 2022 at 2:34 PM <liu.yao71@zte.com.cn> wrote:
Hi all,

We presented https://d= atatracker.ietf.org/doc/draft-peng-idr-segment-routing-te-policy-attr= =C2=A0 on IDR's session last week.
This document defines two kinds of new Segment Sub-TLVs to carry SID relate= d algorithm when delivering SR Policy via BGP. One is for SR-MPLS adjacency= with algorithm, another kind is defined for carrying the algo along with t= he SR-MPLS or SRv6 SID value.

KT> Th= is work is introducing new Segment Types over what is being specified in=C2= =A0https://datatracker.ietf.org/doc/html/draft= -ietf-spring-segment-routing-policy-22#section-4 and hence I believe at= least a review in SPRING WG would be useful.
=C2=A0

While we believe that the former kind is necessary, considering draft-ietf-= lsr-algorithm-related-adjacency-sid complements that in scenarios where mul= tiple algorithm share the same link resource, the algorithm can be also inc= luded as part of an Adj-SID advertisement for SR-MPLS.
KT> I agree. That LSR draft is extending the algorithm which= was associated with Prefixes by RFC8402 to now also adjacency SID and woul= d also benefit from SPRING WG review. I do believe there is a use case for = algorithm-specific adjacency SID. Therefore, I see there is a case for the = introduction of the new Segment Types M, N, O, and P that is being proposed= by you in=C2=A0draft-peng-idr-segment-routing-te-policy-attr.
= =C2=A0

We'd like to request the WG's opinion especially about the deliveri= ng SR-MPLS or SRv6 SID value with optional algorithm. (Thanks for Ketan'= ;s suggestion about this.)
Segment Sub-TLVs carrying SID value with optional algorithm are defined in = this draft because we think it may benefit the scenarios below:
Scenario 1: For verification purposes. The headend can check if the SID val= ue and the related algorithm received can be found in its SR-DB if requeste= d to do so.
Scenario 2: The headend may not know about the SID-related algorithm especi= ally in the inter-domain scenario.=C2=A0 Providing the algorithm=C2=A0 info= benefits troubleshooting and network management.

=
KT> I do not see the point of the Segment Types L and Q that = are proposed in your document. I fail to understand what is meant by valida= tion=C2=A0or troubleshooting here. I will point to Sec 4 and 5 of draft-iet= f-spring-segment-routing-policy for details on how the segment types are va= lidated/used. When the SID is specified as a label or SRv6 SID directly, th= en the controller has already done its resolution and identified the SID. I= don't see the point in complicating these "simple" types tha= t are the most widely deployed and used ones.

Than= ks,
Ketan
=C2=A0

Any comments and suggestions are welcome.

Thanks,
Yao
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Packet Routing in NetworkinG \(SPRING\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 06 Apr 2022 21:30:49 -0000 Greetings, We are unable to verify this erratum that the submitter marked as = editorial. =20 Please note that we have changed the =E2=80=9CType=E2=80=9D of the = following errata=20 report to =E2=80=9CTechnical=E2=80=9D. As Stream Approver, please = review and set the=20 Status and Type accordingly (see the definitions at=20 https://www.rfc-editor.org/errata-definitions/). You may review the report at:=20 https://www.rfc-editor.org/errata/eid6809 Please see https://www.rfc-editor.org/how-to-verify/ for further=20 information on how to verify errata reports. Further information on errata can be found at:=20 https://www.rfc-editor.org/errata.php. Thank you. RFC Editor/cs > On Jan 5, 2022, at 2:38 AM, RFC Errata System = wrote: >=20 > The following errata report has been submitted for RFC8986, > "Segment Routing over IPv6 (SRv6) Network Programming". >=20 > -------------------------------------- > You may review the report below and at: > https://www.rfc-editor.org/errata/eid6809 >=20 > -------------------------------------- > Type: Editorial > Reported by: Yuya Kawakami >=20 > Section: 4.10 >=20 > Original Text > ------------- > When N receives a packet whose IPv6 DA is S and S is a local End.DX2 > SID >=20 > Corrected Text > -------------- > When N receives a packet whose IPv6 DA is S and S is a local End.DX2V > SID >=20 >=20 > Notes > ----- > seems editorial error >=20 > Instructions: > ------------- > This erratum is currently posted as "Reported". If necessary, please > use "Reply All" to discuss whether it should be verified or > rejected. When a decision is reached, the verifying party =20 > can log in to change the status and edit the report, if necessary.=20 >=20 > -------------------------------------- > RFC8986 (draft-ietf-spring-srv6-network-programming-28) > -------------------------------------- > Title : Segment Routing over IPv6 (SRv6) Network = Programming > Publication Date : February 2021 > Author(s) : C. Filsfils, Ed., P. Camarillo, Ed., J. Leddy, = D. Voyer, S. Matsushima, Z. Li > Category : PROPOSED STANDARD > Source : Source Packet Routing in Networking > Area : Routing > Stream : IETF > Verifying Party : IESG >=20 From nobody Wed Apr 6 18:27:38 2022 Return-Path: X-Original-To: spring@ietfa.amsl.com Delivered-To: spring@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 47CF83A11E6; Wed, 6 Apr 2022 18:27:28 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.905 X-Spam-Level: X-Spam-Status: No, score=-1.905 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, CTE_8BIT_MISMATCH=0.001, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01, UNPARSEABLE_RELAY=0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 7dnNZ0xGzJ_g; Wed, 6 Apr 2022 18:27:23 -0700 (PDT) Received: from mxhk.zte.com.cn (mxhk.zte.com.cn [63.216.63.35]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id D1DEC3A11E1; Wed, 6 Apr 2022 18:27:21 -0700 (PDT) Received: from mse-fl2.zte.com.cn (unknown [10.30.14.239]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mxhk.zte.com.cn (FangMail) with ESMTPS id 4KYkJR4CFNz5B13Y; Thu, 7 Apr 2022 09:27:19 +0800 (CST) Received: from njxapp01.zte.com.cn ([10.41.132.200]) by mse-fl2.zte.com.cn with SMTP id 2371R4eh073552; Thu, 7 Apr 2022 09:27:05 +0800 (GMT-8) (envelope-from liu.yao71@zte.com.cn) Received: from mapi (njxapp03[null]) by mapi (Zmail) with MAPI id mid203; Thu, 7 Apr 2022 09:27:04 +0800 (CST) Date: Thu, 7 Apr 2022 09:27:04 +0800 (CST) X-Zmail-TransId: 2afb624e3de8312-c49ce X-Mailer: Zmail v1.0 Message-ID: <202204070927047797007@zte.com.cn> In-Reply-To: References: 202203301703500769671@zte.com.cn, CAH6gdPyxDxq9soDCTvo84kVYwbOmA5w7D57ihuoOL5fmng-bMg@mail.gmail.com Mime-Version: 1.0 From: To: Cc: , Content-Type: text/plain; charset="UTF-8" X-MAIL: mse-fl2.zte.com.cn 2371R4eh073552 X-Fangmail-Gw-Spam-Type: 0 X-FangMail-Miltered: at cgslv5.04-192.168.250.138.novalocal with ID 624E3DF7.001 by FangMail milter! X-FangMail-Envelope: 1649294839/4KYkJR4CFNz5B13Y/624E3DF7.001/10.30.14.239/[10.30.14.239]/mse-fl2.zte.com.cn/ X-Fangmail-Anti-Spam-Filtered: true X-Fangmail-MID-QID: 624E3DF7.001/4KYkJR4CFNz5B13Y Archived-At: Subject: Re: [spring] =?utf-8?q?SID_Related_Algorithm_in_draft-peng-idr-segme?= =?utf-8?q?nt-routing-te-policy-attr?= X-BeenThere: spring@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Source Packet Routing in NetworkinG \(SPRING\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 07 Apr 2022 01:27:29 -0000 Hi Ketan, Thanks for your further comments and explanation. Please see inline YAO>. Regards, Yao ------------------原始邮件------------------ 发件人：KetanTalaulikar 抄送人：SPRING WG;idr@ietf.org; 日 期 ：2022年04月05日 00:47 主 题 ：Re: SID Related Algorithm in draft-peng-idr-segment-routing-te-policy-attr Hi Yao, Please check inline below. On Wed, Mar 30, 2022 at 2:34 PM wrote: Hi all, We presented https://datatracker.ietf.org/doc/draft-peng-idr-segment-routing-te-policy-attr on IDR's session last week. This document defines two kinds of new Segment Sub-TLVs to carry SID related algorithm when delivering SR Policy via BGP. One is for SR-MPLS adjacency with algorithm, another kind is defined for carrying the algo along with the SR-MPLS or SRv6 SID value. KT> This work is introducing new Segment Types over what is being specified in https://datatracker.ietf.org/doc/html/draft-ietf-spring-segment-routing-policy-22#section-4 and hence I believe at least a review in SPRING WG would be useful. YAO> Yes, thanks for the suggestion. While we believe that the former kind is necessary, considering draft-ietf-lsr-algorithm-related-adjacency-sid complements that in scenarios where multiple algorithm share the same link resource, the algorithm can be also included as part of an Adj-SID advertisement for SR-MPLS. KT> I agree. That LSR draft is extending the algorithm which was associated with Prefixes by RFC8402 to now also adjacency SID and would also benefit from SPRING WG review. I do believe there is a use case for algorithm-specific adjacency SID. Therefore, I see there is a case for the introduction of the new Segment Types M, N, O, and P that is being proposed by you in draft-peng-idr-segment-routing-te-policy-attr. We'd like to request the WG's opinion especially about the delivering SR-MPLS or SRv6 SID value with optional algorithm. (Thanks for Ketan's suggestion about this.) Segment Sub-TLVs carrying SID value with optional algorithm are defined in this draft because we think it may benefit the scenarios below: Scenario 1: For verification purposes. The headend can check if the SID value and the related algorithm received can be found in its SR-DB if requested to do so. Scenario 2: The headend may not know about the SID-related algorithm especially in the inter-domain scenario. Providing the algorithm info benefits troubleshooting and network management. KT> I do not see the point of the Segment Types L and Q that are proposed in your document. I fail to understand what is meant by validation or troubleshooting here. I will point to Sec 4 and 5 of draft-ietf-spring-segment-routing-policy for details on how the segment types are validated/used. When the SID is specified as a label or SRv6 SID directly, then the controller has already done its resolution and identified the SID. I don't see the point in complicating these "simple" types that are the most widely deployed and used ones. YAO> The validation for type L and type Q are mainly used for checking whether the data/status between the controller and the headend is consistent, e.g, at first, the controller learnt the information of SID1 with algo 128 from the data plane, then SID1 is re-allocated for algo 129, but this info has not been advertised to the control plane due to certain malfunction. If validation is enabled, this error can be observed. As for troubleshooting, one potential scenario is the MPLS lspping with the algorithm as referred in draft-iqbal-spring-mpls-ping-algo. If the SID related algorithm information along the LSP needs to be verified using the lspping mechanism, the headend needs to know the algorithm info before sending the request message. In inter-domain scenario where the headend can't get the algo of SIDs in other domains through IGP advertisement, telling the headend this information by the controller is an option. Above is the consideration for introducing SID value with optional algorithm, if this is considered not very necessary for now, we can move it to a separate draft for discussion. Thanks, Ketan Any comments and suggestions are welcome. 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charset="us-ascii" Content-Transfer-Encoding: quoted-printable Gentle reminder Juniper Business Use Only From: Rajesh M Sent: Sunday, April 3, 2022 3:56 PM To: spring@ietf.org Subject: draft-filsfils-spring-net-pgm-extension-srv6-usid-12 If the uSID length is 16 then function length in case of uA,uDT,uDX must be= 16 ? If the uSID length is 32 then function length in case of uA,uDT,uDX must be= 32? Juniper Business Use Only --_000_SA1PR05MB8210A4230B8CB8029CD8BD87BEE69SA1PR05MB8210namp_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Gentle reminder

 

 

Juniper Business Use Only

From: Rajesh M
Sent: Sunday, April 3, 2022 3:56 PM
To: spring@ietf.org
Subject: draft-filsfils-spring-net-pgm-extension-srv6-usid-12

 

If the uSID len= gth is 16 then function length in case of uA,uDT,uDX must be 16 ?

If the uSID len= gth is 32 then function length in case of uA,uDT,uDX must be 32?=

 <= /p>

 

Juniper Business Use Only

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boundary="_000_PH0PR05MB85910EBCE4092BCBA6D82346ABE69PH0PR05MB8591namp_" MIME-Version: 1.0 X-OriginatorOrg: juniper.net X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: PH0PR05MB8591.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: ca3dd3e9-3cbf-42b0-23c4-08da18672a7c X-MS-Exchange-CrossTenant-originalarrivaltime: 07 Apr 2022 07:20:59.8573 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: bea78b3c-4cdb-4130-854a-1d193232e5f4 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: +x5mIRfkPMRVvwnAq7ru7xy9p4sf/kC0NBHKtluvoULZGOV7n0sKvi0QCM+OSFCnTiLBAXn42LfOdFuYYZkYXQ== X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN6PR05MB4557 X-Proofpoint-GUID: sSV4CgEGe6c4qF2NJAewF4Eu0jCIr2v_ X-Proofpoint-ORIG-GUID: sSV4CgEGe6c4qF2NJAewF4Eu0jCIr2v_ X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.850,Hydra:6.0.425,FMLib:17.11.64.514 definitions=2022-04-06_13,2022-04-06_01,2022-02-23_01 X-Proofpoint-Spam-Details: rule=outbound_spam_notspam policy=outbound_spam score=0 priorityscore=1501 adultscore=0 impostorscore=0 clxscore=1011 mlxlogscore=915 spamscore=0 suspectscore=0 bulkscore=0 malwarescore=0 mlxscore=0 phishscore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2202240000 definitions=main-2204070036 Archived-At: Subject: [spring] Query : draft-filsfils-spring-net-pgm-extension-srv6-usid-12 X-BeenThere: spring@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Source Packet Routing in NetworkinG \(SPRING\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 07 Apr 2022 07:21:14 -0000 --_000_PH0PR05MB85910EBCE4092BCBA6D82346ABE69PH0PR05MB8591namp_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Can you please clarify whether Function Length (FL) will be 0 or 16 for the= below uN use-case ? >> Assume we have a uN advertised from Node N * Value =3D 2001:db8:0:0N00:: * Behavior =3D uN * Structure =3D - LBL =3D 48 - LNL =3D 16 - FL =3D 0 - AL =3D 64 Now say we need 2 flavors for that uN; one with just USD flavor and another= with just USP flavor. Will that be 2001:db8:0:0N00:0000::/80 for USD and 2001:db8:0:0N00:0001::/8= 0 for USP? In these 2 SID advertisements the FL will be 16? or do we need separate uN from same node for different flavors (all with im= plicit :0000::) with FL 0? Juniper Business Use Only --_000_PH0PR05MB85910EBCE4092BCBA6D82346ABE69PH0PR05MB8591namp_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Can you please clarify whether Function Length (FL) = will be 0 or 16 for the below uN use-case ?

 

>> Assume we have a uN advertised from Node N =

   *  Value =3D 2001:db8:0:0N00:= :          

 

   *  Behavior =3D uN

 

   *  Structure =3D

 

      -  LBL =3D 48

 

      -  LNL =3D 16

 

      -  FL =3D 0=

 

      -  AL =3D 64

        &nbs= p;    

Now say we need 2 flavors for that uN; one with just= USD flavor and another with just USP flavor.

 

Will that be 2001:db8:0:0N00:0000::/80 for USD and 2= 001:db8:0:0N00:0001::/80 for USP? In these 2 SID advertisements the FL will= be 16?

or do we need separate uN from same node for differe= nt flavors (all with implicit :0000::) with FL 0?

 

 


Juniper Business= Use Only

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boundary="_000_DM8PR11MB57191A8713ED6CC9856E3C69C9E69DM8PR11MB5719namp_" MIME-Version: 1.0 X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: DM8PR11MB5719.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: d5a2cd84-784e-4033-d87f-08da189ddc14 X-MS-Exchange-CrossTenant-originalarrivaltime: 07 Apr 2022 13:52:30.6694 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 5ae1af62-9505-4097-a69a-c1553ef7840e X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: anlGe7SAK6bJ71+XqUO+S9uVU+SYQxabq7GU8D0QLn43OXD4hbLlY8Oet41OBvhviwwVKkeqnhqCOXIV4Oh1/g== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM5PR11MB1516 X-OriginatorOrg: cisco.com X-Outbound-SMTP-Client: 64.101.210.231, xfe-rtp-001.cisco.com X-Outbound-Node: alln-core-11.cisco.com Archived-At: Subject: Re: [spring] draft-filsfils-spring-net-pgm-extension-srv6-usid-12 X-BeenThere: spring@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Source Packet Routing in NetworkinG \(SPRING\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 07 Apr 2022 13:52:58 -0000 --_000_DM8PR11MB57191A8713ED6CC9856E3C69C9E69DM8PR11MB5719namp_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Hi Rajesh, Copy-paste leftover. We will remove in the next revision. Thanks for letting us know. Cheers, Pablo. From: spring On Behalf Of Rajesh M Sent: domingo, 3 de abril de 2022 15:44 To: spring@ietf.org Subject: Re: [spring] draft-filsfils-spring-net-pgm-extension-srv6-usid-12 Also section 4.2.1.1 and section 4.2.2.1 Algorithm =3D 0 (or other) how to mention in BGP. is it a mistake ? Juniper Business Use Only From: spring > On B= ehalf Of Rajesh M Sent: Sunday, April 3, 2022 3:56 PM To: spring@ietf.org Subject: [spring] draft-filsfils-spring-net-pgm-extension-srv6-usid-12 [External Email. Be cautious of content] If the uSID length is 16 then function length in case of uA,uDT,uDX must be= 16 ? If the uSID length is 32 then function length in case of uA,uDT,uDX must be= 32? Juniper Business Use Only --_000_DM8PR11MB57191A8713ED6CC9856E3C69C9E69DM8PR11MB5719namp_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Hi Rajesh,

 

Copy-paste leftover. We will remove in the next revision.

Thanks for letting us know.

 

Cheers,

Pablo.

 

From: spring <spring-bounces@ietf.org> On Behalf Of Rajesh M
Sent: domingo, 3 de abril de 2022 15:44
To: spring@ietf.org
Subject: Re: [spring] draft-filsfils-spring-net-pgm-extension-srv6-u= sid-12

 

Also section 4.2.1.1 and sectio= n 4.2.2.1

 

Algorithm =3D 0 (or other) how to mention in BGP. &n= bsp;is it a mistake ?

 

 

 

Juniper Business= Use Only

From: spring <spring-bounces@ietf.org&= gt; On Behalf Of Rajesh M
Sent: Sunday, April 3, 2022 3:56 PM
To: s= pring@ietf.org
Subject: [spring] draft-filsfils-spring-net-pgm-extension-srv6-usid-= 12

 

<= span lang=3D"EN-US" style=3D"font-size:10.5pt;font-family:"Lato",= sans-serif;color:black">[External Email. Be cautious of content]=

 

If the uSID length is 16 then function length in case of uA,uDT,uDX must be= 16 ?

If the uSID length is 32 then function length in case of uA,uDT,uDX must be= 32?

 = ;

 

Juniper Business= Use Only

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X-MS-Exchange-CrossTenant-Network-Message-Id: 0795157a-c638-437c-70b2-08da189df878 X-MS-Exchange-CrossTenant-originalarrivaltime: 07 Apr 2022 13:53:18.2898 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 5ae1af62-9505-4097-a69a-c1553ef7840e X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: w1XLAsWP8EOkYD/OtH6V1lo2cJRRJqsfiURdRFXyjQbzLhTAlWPv1NhSX+igXfa3XvkQM7Q7QUDH2tHeAbNUqQ== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM5PR11MB1516 X-OriginatorOrg: cisco.com X-Outbound-SMTP-Client: 173.37.135.125, xfe-aln-005.cisco.com X-Outbound-Node: alln-core-6.cisco.com Archived-At: Subject: Re: [spring] draft-filsfils-spring-net-pgm-extension-srv6-usid-12 X-BeenThere: spring@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Source Packet Routing in NetworkinG \(SPRING\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 07 Apr 2022 13:54:05 -0000 --_000_DM8PR11MB571999503CA8077AADF0DA2FC9E69DM8PR11MB5719namp_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Hi Rajesh, Yes, that is correct. Cheers, Pablo. From: spring On Behalf Of Rajesh M Sent: domingo, 3 de abril de 2022 12:26 To: spring@ietf.org Subject: [spring] draft-filsfils-spring-net-pgm-extension-srv6-usid-12 If the uSID length is 16 then function length in case of uA,uDT,uDX must be= 16 ? If the uSID length is 32 then function length in case of uA,uDT,uDX must be= 32? Juniper Business Use Only --_000_DM8PR11MB571999503CA8077AADF0DA2FC9E69DM8PR11MB5719namp_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Hi Rajesh= ,

&nbs= p;

Yes, that= is correct.

&nbs= p;

Cheers,

Pablo.

 

From: spring <spring-bounces@ietf.org> On Behalf Of Rajesh M
Sent: domingo, 3 de abril de 2022 12:26
To: spring@ietf.org
Subject: [spring] draft-filsfils-spring-net-pgm-extension-srv6-usid-= 12

 

If the uSID length is 16 then function length in case of uA,uDT,uDX must be= 16 ?

If the uSID length is 32 then function length in case of uA,uDT,uDX must be= 32?

 = ;

 

Juniper Business= Use Only

--_000_DM8PR11MB571999503CA8077AADF0DA2FC9E69DM8PR11MB5719namp_-- From nobody Thu Apr 7 09:30:47 2022 Return-Path: X-Original-To: spring@ietfa.amsl.com Delivered-To: spring@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id D0D693A1750; Thu, 7 Apr 2022 09:30:30 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.106 X-Spam-Level: X-Spam-Status: No, score=-2.106 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id zA4qoLq3iyTd; Thu, 7 Apr 2022 09:30:24 -0700 (PDT) Received: from mail-vk1-xa32.google.com (mail-vk1-xa32.google.com [IPv6:2607:f8b0:4864:20::a32]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 1C7D73A1732; Thu, 7 Apr 2022 09:30:03 -0700 (PDT) Received: by mail-vk1-xa32.google.com with SMTP id w67so914301vkw.6; Thu, 07 Apr 2022 09:30:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=pIDWgrzzpM9nB/ATsvw2Rf9PrGjFgf02iMiZ3hjfA10=; b=pnRlOeEwj/O9Z9OKAaEK0AXvU7RPOeQkSiUZ99KMvTnpDitHUVIh5neTiYn7m/aX6P dKQufHPB2fshS60rBlR8ZiTkBV8TYI8tpRErwsbubYFKOmT6I3wzMKuzOrQJizTOZ4wr vQHoNSoz38O7x81j2RHBUmPEXLKTYvQD6VZk9t1prsjmDNsk8Xt7//zveEz7D65BjkNM /eMScKSO8Y/JWRL14w+1JeyDlh1ktKW2QEAYUORDFZmM8tOrrxUh5ZzfxWY7o5o5OeN5 0CwXHTVsxZVfET7DzYrhEfbiDr9VjuQrJwuknrIfVpbLhjUgGH/NmQEyheHXQqPlx4AV nfVQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=pIDWgrzzpM9nB/ATsvw2Rf9PrGjFgf02iMiZ3hjfA10=; b=UVDrSbf5RMdLtClfcw8rwpDZNn1Y4iXtE27KczfZfgKbwwg/iwPMaqlZDYBEuT9qf7 ujyWq6L+h02WTJTyPMO6Peki6ro6EuXNBgf4vrCFP0+0PSPg1u7Dq8kvGCJ8FAJuu6BU xueUSEScoEt7Upc8nCG5YLFL/WdK/u4yf0MbgIkaO2dDuJSzzaaeIxjaePTy71Zk5syQ wMw0kC5qC5A/IveOcSEYdNPKmluwRRJOwcP6kx2RXdl8lwx78WrPqfCCb8NSr0+DuZHC ci0zB+v1vUbW/bytzdio0ozUZiOwxzjpigTvU869HIb2JOmWkU0PQ8cfWve1zbEAKlyk KLRA== X-Gm-Message-State: AOAM530YBqw26RBdfsU3Osgz+nxaXMEHo9ACC3ZIPOrC5CjCwYFZEXwh IK2lX1T1pCctxqFVC2w3d/f7D238Mt9KDWZri9aHj4FP X-Google-Smtp-Source: ABdhPJzzWZaNS15vC3kfW0zkSgNxFY+y3CL0Y02Sg5DwAzQJUc6w8dvIYnF2bTv6qH9pnOQbqYSxL/nNfZI8QvFO9XA= X-Received: by 2002:ac5:cfe7:0:b0:344:a419:c76a with SMTP id m39-20020ac5cfe7000000b00344a419c76amr5208630vkf.33.1649349001401; Thu, 07 Apr 2022 09:30:01 -0700 (PDT) MIME-Version: 1.0 References: <202204070927047797007@zte.com.cn> In-Reply-To: <202204070927047797007@zte.com.cn> From: Ketan Talaulikar Date: Thu, 7 Apr 2022 21:59:50 +0530 Message-ID: To: liu.yao71@zte.com.cn Cc: SPRING WG , idr@ietf.org Content-Type: multipart/alternative; boundary="00000000000056da4e05dc12fda2" Archived-At: Subject: Re: [spring] SID Related Algorithm in draft-peng-idr-segment-routing-te-policy-attr X-BeenThere: spring@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Source Packet Routing in NetworkinG \(SPRING\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 07 Apr 2022 16:30:39 -0000 --00000000000056da4e05dc12fda2 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hi Yao, Thanks for your response. I don't see the need for the types L and Q. The controller might as well use existing types if it is not sure of the resolution. Thanks, Ketan On Thu, Apr 7, 2022 at 6:57 AM wrote: > Hi Ketan, > Thanks for your further comments and explanation. Please see inline YAO>. > > Regards, > Yao > > ------------------=E5=8E=9F=E5=A7=8B=E9=82=AE=E4=BB=B6------------------ > =E5=8F=91=E4=BB=B6=E4=BA=BA=EF=BC=9AKetanTalaulikar > =E6=8A=84=E9=80=81=E4=BA=BA=EF=BC=9ASPRING WG;idr@ietf.org; > =E6=97=A5 =E6=9C=9F =EF=BC=9A2022=E5=B9=B404=E6=9C=8805=E6=97=A5 00:47 > =E4=B8=BB =E9=A2=98 =EF=BC=9ARe: SID Related Algorithm in > draft-peng-idr-segment-routing-te-policy-attr > Hi Yao, > Please check inline below. > > On Wed, Mar 30, 2022 at 2:34 PM wrote: > Hi all, > We presented > https://datatracker.ietf.org/doc/draft-peng-idr-segment-routing-te-policy= -attr > on IDR's session last week. > This document defines two kinds of new Segment Sub-TLVs to carry SID > related algorithm when delivering SR Policy via BGP. One is for SR-MPLS > adjacency with algorithm, another kind is defined for carrying the algo > along with the SR-MPLS or SRv6 SID value. > > KT> This work is introducing new Segment Types over what is being > specified in > https://datatracker.ietf.org/doc/html/draft-ietf-spring-segment-routing-p= olicy-22#section-4 > and hence I believe at least a review in SPRING WG would be useful. > YAO> Yes, thanks for the suggestion. > > While we believe that the former kind is necessary, considering > draft-ietf-lsr-algorithm-related-adjacency-sid complements that in > scenarios where multiple algorithm share the same link resource, the > algorithm can be also included as part of an Adj-SID advertisement for > SR-MPLS. > > KT> I agree. That LSR draft is extending the algorithm which was > associated with Prefixes by RFC8402 to now also adjacency SID and would > also benefit from SPRING WG review. I do believe there is a use case for > algorithm-specific adjacency SID. Therefore, I see there is a case for th= e > introduction of the new Segment Types M, N, O, and P that is being propos= ed > by you in draft-peng-idr-segment-routing-te-policy-attr. > > > We'd like to request the WG's opinion especially about the delivering > SR-MPLS or SRv6 SID value with optional algorithm. (Thanks for Ketan's > suggestion about this.) > Segment Sub-TLVs carrying SID value with optional algorithm are defined i= n > this draft because we think it may benefit the scenarios below: > Scenario 1: For verification purposes. The headend can check if the SID > value and the related algorithm received can be found in its SR-DB if > requested to do so. > Scenario 2: The headend may not know about the SID-related algorithm > especially in the inter-domain scenario. Providing the algorithm info > benefits troubleshooting and network management. > > KT> I do not see the point of the Segment Types L and Q that are proposed > in your document. I fail to understand what is meant by validation or > troubleshooting here. I will point to Sec 4 and 5 of > draft-ietf-spring-segment-routing-policy for details on how the segment > types are validated/used. When the SID is specified as a label or SRv6 SI= D > directly, then the controller has already done its resolution and > identified the SID. I don't see the point in complicating these "simple" > types that are the most widely deployed and used ones. > > YAO> The validation for type L and type Q are mainly used for checking > whether the data/status between the controller and the headend is > consistent, e.g, at first, the controller learnt the information of SID1 > with algo 128 from the data plane, then SID1 is re-allocated for algo 129= , > but this info has not been advertised to the control plane due to certain > malfunction. If validation is enabled, this error can be observed. > As for troubleshooting, one potential scenario is the MPLS lspping with > the algorithm as referred in draft-iqbal-spring-mpls-ping-algo. If the SI= D > related algorithm information along the LSP needs to be verified using th= e > lspping mechanism, the headend needs to know the algorithm info before > sending the request message. In inter-domain scenario where the headend > can't get the algo of SIDs in other domains through IGP advertisement, > telling the headend this information by the controller is an option. > Above is the consideration for introducing SID value with optional > algorithm, if this is considered not very necessary for now, we can move = it > to a separate draft for discussion. > > > Thanks, > Ketan > > > Any comments and suggestions are welcome. > Thanks, > Yao > --00000000000056da4e05dc12fda2 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hi Yao,

Thanks for your response. I don= 't see the need for the types L and Q. The controller might as well use= existing types if it is not sure of the resolution.=C2=A0

Thanks,
Ketan


On Thu, Apr 7, 2022 = at 6:57 AM <liu.yao71@zte.com.cn= > wrote:
= Hi Ketan,
Thanks for your further comments and explanation. Please see inline YAO>= .

Regards,
Yao

------------------=E5=8E=9F=E5=A7=8B=E9=82=AE=E4=BB=B6------------------ =E5=8F=91=E4=BB=B6=E4=BA=BA=EF=BC=9AKetanTalaulikar
=E6=8A=84=E9=80=81=E4=BA=BA=EF=BC=9ASPRING WG;idr@ietf.org;
=E6=97=A5 =E6=9C=9F =EF=BC=9A2022=E5=B9=B404=E6=9C=8805=E6=97=A5 00:47
=E4=B8=BB =E9=A2=98 =EF=BC=9ARe: SID Related Algorithm in draft-peng-idr-se= gment-routing-te-policy-attr
Hi Yao,
Please check inline below.

On Wed, Mar 30, 2022 at 2:34 PM <liu.yao71@zte.com.cn> wrote:
Hi all,
We presented https://d= atatracker.ietf.org/doc/draft-peng-idr-segment-routing-te-policy-attr= =C2=A0 on IDR's session last week.
This document defines two kinds of new Segment Sub-TLVs to carry SID relate= d algorithm when delivering SR Policy via BGP. One is for SR-MPLS adjacency= with algorithm, another kind is defined for carrying the algo along with t= he SR-MPLS or SRv6 SID value.

KT> This work is introducing new Segment Types over what is being specif= ied in ht= tps://datatracker.ietf.org/doc/html/draft-ietf-spring-segment-routing-polic= y-22#section-4 and hence I believe at least a review in SPRING WG would= be useful.
YAO> Yes, thanks for the suggestion.

While we believe that the former kind is necessary, considering draft-ietf-= lsr-algorithm-related-adjacency-sid complements that in scenarios where mul= tiple algorithm share the same link resource, the algorithm can be also inc= luded as part of an Adj-SID advertisement for SR-MPLS.

KT> I agree. That LSR draft is extending the algorithm which was associa= ted with Prefixes by RFC8402 to now also adjacency SID and would also benef= it from SPRING WG review. I do believe there is a use case for algorithm-sp= ecific adjacency SID. Therefore, I see there is a case for the introduction= of the new Segment Types M, N, O, and P that is being proposed by you in d= raft-peng-idr-segment-routing-te-policy-attr.


We'd like to request the WG's opinion especially about the deliveri= ng SR-MPLS or SRv6 SID value with optional algorithm. (Thanks for Ketan'= ;s suggestion about this.)
Segment Sub-TLVs carrying SID value with optional algorithm are defined in = this draft because we think it may benefit the scenarios below:
Scenario 1: For verification purposes. The headend can check if the SID val= ue and the related algorithm received can be found in its SR-DB if requeste= d to do so.
Scenario 2: The headend may not know about the SID-related algorithm especi= ally in the inter-domain scenario.=C2=A0 Providing the algorithm=C2=A0 info= benefits troubleshooting and network management.

KT> I do not see the point of the Segment Types L and Q that are propose= d in your document. I fail to understand what is meant by validation or tro= ubleshooting here. I will point to Sec 4 and 5 of draft-ietf-spring-segment= -routing-policy for details on how the segment types are validated/used. Wh= en the SID is specified as a label or SRv6 SID directly, then the controlle= r has already done its resolution and identified the SID. I don't see t= he point in complicating these "simple" types that are the most w= idely deployed and used ones.

YAO> The validation for type L and type Q are mainly used for checking w= hether the data/status between the controller and the headend is consistent= , e.g, at first, the controller learnt the information of SID1 with algo 12= 8 from the data plane, then SID1 is re-allocated for algo 129, but this inf= o has not been advertised to the control plane due to certain malfunction. = If validation is enabled, this error can be observed.
As for troubleshooting, one potential scenario is the MPLS lspping with the= algorithm as referred in draft-iqbal-spring-mpls-ping-algo. If the SID rel= ated algorithm information along the LSP needs to be verified using the lsp= ping mechanism, the headend needs to know the algorithm info before sending= the request message. In inter-domain scenario where the headend can't = get the algo of SIDs in other domains through IGP advertisement, telling th= e headend this information by the controller is an option.
Above is the consideration for introducing SID value with optional algorith= m, if this is considered not very necessary for now, we can move it to a se= parate draft for discussion.


Thanks,
Ketan


Any comments and suggestions are welcome.
Thanks,
Yao
--00000000000056da4e05dc12fda2-- From nobody Thu Apr 7 10:09:36 2022 Return-Path: X-Original-To: spring@ietfa.amsl.com Delivered-To: spring@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 671213A0FFD for ; Thu, 7 Apr 2022 10:09:30 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.109 X-Spam-Level: X-Spam-Status: No, score=-2.109 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, NICE_REPLY_A=-0.001, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=joelhalpern.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Xx3LvfQpEQFL for ; Thu, 7 Apr 2022 10:09:22 -0700 (PDT) Received: from mailb2.tigertech.net (mailb2.tigertech.net [208.80.4.154]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id D08ED3A0A09 for ; Thu, 7 Apr 2022 10:09:22 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by mailb2.tigertech.net (Postfix) with ESMTP id 4KZ7CQ4rp3z1nyST; Thu, 7 Apr 2022 10:09:22 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=joelhalpern.com; s=2.tigertech; t=1649351362; bh=1VdDdYo/jM4qCX8TNaDzLZ6b4UL3ZSxvsf6V7cX4N1M=; h=Date:Subject:To:References:From:In-Reply-To:From; b=CNVjXWPvjVwp/4pJaulnmDWWrXcgnl/IDk9bdKUuFuM/XRZkyDKmWX9dGWgaUzXiL sZ//FboGSonYbA3jPflHaVGaImmTmCwarVZyGOEln6HNk7jpmERWNYHcaA52zXkinw ClpT7RDMKl2rG2jf1+mzWZ8sM7W2OiLKdB1sQd2I= X-Quarantine-ID: X-Virus-Scanned: Debian amavisd-new at b2.tigertech.net Received: from [192.168.21.218] (50-233-136-230-static.hfc.comcastbusiness.net [50.233.136.230]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mailb2.tigertech.net (Postfix) with ESMTPSA id 4KZ7CQ0Gtvz1nt05; Thu, 7 Apr 2022 10:09:21 -0700 (PDT) Message-ID: Date: Thu, 7 Apr 2022 13:09:20 -0400 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Thunderbird/91.7.0 Content-Language: en-US To: "Pablo Camarillo (pcamaril)" , Trevor Mendez , "spring@ietf.org" References: From: "Joel M. Halpern" In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Archived-At: Subject: Re: [spring] NEXT-ONLY-CSID in draft-filsfils-spring-net-pgm-extension-srv6-usid-12 X-BeenThere: spring@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Source Packet Routing in NetworkinG \(SPRING\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 07 Apr 2022 17:09:32 -0000 (speaking as a WG member trying to understand this exchange.) Having two codes, one for NEXT-ONLY-CSID and one for NEXT-CSID seems odd. In terms of what the node does with packets addressed to SIDs with the given behavior, they seem to be the same. So if I understand properly, the different is an implication about the existence of SIDs for this node with other behaviors? But wouldn't receivers determine such behavior being available from the advertisements of those behaviors? If there are no other advertised (compressed?) behaviors, wouldn't that tell you everything you need to know. If there are such other advertiements, but 42 (NEXT-ONLY-CSID) is advertised what would that mean? And conversely, if there are no other advertised relevant behaviors, what would it mean to advertise 43 (NEXT-CSID)? Yours, Joel On 4/7/2022 9:52 AM, Pablo Camarillo (pcamaril) wrote: > Hi Trevor, > > This refers to a node that only processes the ::/64 (shift-and-lookup) > of 4.1.1. > > Cheers, > > Pablo. > > *From:*spring *On Behalf Of *Trevor Mendez > *Sent:* viernes, 25 de marzo de 2022 19:20 > *To:* spring@ietf.org > *Subject:* [spring] NEXT-ONLY-CSID in > draft-filsfils-spring-net-pgm-extension-srv6-usid-12 > > Hi all, > > What is the meaning of NEXT-ONLY-CSID?  It isn't clear to me what the > difference is between 42 and 43 below? > >    +=======+========+======================================+===========+ > >    | Value |  Hex   |          Endpoint behavior           | Reference | > >    +=======+========+======================================+===========+ > >    | 42    | 0x002A |       End with NEXT-ONLY-CSID        | [This.ID] | > >    +-------+--------+--------------------------------------+-----------+ > >    | 43    | 0x002B |          End with NEXT-CSID          | [This.ID] | > >    +-------+--------+--------------------------------------+-----------+ > > (Looks like a similar question was asked before here > , > but I didn't see an answer.) > > > Thanks, > Trevor > > > _______________________________________________ > spring mailing list > spring@ietf.org > https://www.ietf.org/mailman/listinfo/spring From nobody Sun Apr 10 18:47:57 2022 Return-Path: X-Original-To: spring@ietfa.amsl.com Delivered-To: spring@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 5E4AC3A10E7; 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Mon, 11 Apr 2022 01:47:45 +0000 From: Rajesh M To: "Pablo Camarillo (pcamaril)" , "spring@ietf.org" Thread-Topic: draft-filsfils-spring-net-pgm-extension-srv6-usid-12 Thread-Index: AdhHRG/LgpiIb46LS+GHzUpFOEqdHgCWe6+QAOmwGmA= Date: Mon, 11 Apr 2022 01:47:45 +0000 Message-ID: References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: dlp-product: dlpe-windows dlp-version: 11.6.400.34 dlp-reaction: no-action msip_labels: MSIP_Label_0633b888-ae0d-4341-a75f-06e04137d755_Enabled=true; MSIP_Label_0633b888-ae0d-4341-a75f-06e04137d755_SetDate=2022-04-11T01:47:42Z; MSIP_Label_0633b888-ae0d-4341-a75f-06e04137d755_Method=Standard; MSIP_Label_0633b888-ae0d-4341-a75f-06e04137d755_Name=0633b888-ae0d-4341-a75f-06e04137d755; MSIP_Label_0633b888-ae0d-4341-a75f-06e04137d755_SiteId=bea78b3c-4cdb-4130-854a-1d193232e5f4; MSIP_Label_0633b888-ae0d-4341-a75f-06e04137d755_ActionId=298019a5-50cd-448c-95d6-76af8f8851bb; MSIP_Label_0633b888-ae0d-4341-a75f-06e04137d755_ContentBits=2 x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: b89e99b8-ed17-4e8c-39c3-08da1b5d46b6 x-ms-traffictypediagnostic: BYAPR05MB5206:EE_ x-ms-exchange-atpmessageproperties: SA|SL x-microsoft-antispam-prvs: x-ms-exchange-senderadcheck: 1 x-ms-exchange-antispam-relay: 0 x-microsoft-antispam: BCL:0; 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boundary="_000_SA1PR05MB82103639946DC13BF40DCEEABEEA9SA1PR05MB8210namp_" MIME-Version: 1.0 X-OriginatorOrg: juniper.net X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: SA1PR05MB8210.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: b89e99b8-ed17-4e8c-39c3-08da1b5d46b6 X-MS-Exchange-CrossTenant-originalarrivaltime: 11 Apr 2022 01:47:45.7509 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: bea78b3c-4cdb-4130-854a-1d193232e5f4 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: R97DWi5TeQzj3m/BxY9ZjM+8jCH9oAcaSGEMYS021d46dploUgLP2GxOrFTt2RcyT4xls+n0qu/CN4V+n+AVcA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: BYAPR05MB5206 X-Proofpoint-GUID: 8C654bryNDaWonof3CODpTc3KWcjJ3rn X-Proofpoint-ORIG-GUID: 8C654bryNDaWonof3CODpTc3KWcjJ3rn X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.858,Hydra:6.0.425,FMLib:17.11.64.514 definitions=2022-04-10_10,2022-04-08_01,2022-02-23_01 X-Proofpoint-Spam-Details: rule=outbound_spam_notspam policy=outbound_spam score=0 mlxlogscore=999 clxscore=1011 mlxscore=0 adultscore=0 priorityscore=1501 spamscore=0 bulkscore=0 malwarescore=0 impostorscore=0 suspectscore=0 lowpriorityscore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2202240000 definitions=main-2204110007 Archived-At: Subject: Re: [spring] draft-filsfils-spring-net-pgm-extension-srv6-usid-12 X-BeenThere: spring@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Source Packet Routing in NetworkinG \(SPRING\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 11 Apr 2022 01:47:56 -0000 --_000_SA1PR05MB82103639946DC13BF40DCEEABEEA9SA1PR05MB8210namp_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Hi Pablo, Why in the draft , PSP and USD flavors are covered. Why not USP flavor ? For example: The uN is a short notation for the End behavior with NEXT-CSID, PSP and USD= flavors The uA local behavior is a short notation for the End.X behavior with NEXT-= CSID, PSP and USD flavors Thanks Rajesh Juniper Business Use Only From: Pablo Camarillo (pcamaril) Sent: Thursday, April 7, 2022 7:23 PM To: Rajesh M ; spring@ietf.org Subject: RE: draft-filsfils-spring-net-pgm-extension-srv6-usid-12 [External Email. Be cautious of content] Hi Rajesh, Yes, that is correct. Cheers, Pablo. From: spring > On B= ehalf Of Rajesh M Sent: domingo, 3 de abril de 2022 12:26 To: spring@ietf.org Subject: [spring] draft-filsfils-spring-net-pgm-extension-srv6-usid-12 If the uSID length is 16 then function length in case of uA,uDT,uDX must be= 16 ? If the uSID length is 32 then function length in case of uA,uDT,uDX must be= 32? Juniper Business Use Only --_000_SA1PR05MB82103639946DC13BF40DCEEABEEA9SA1PR05MB8210namp_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Hi Pablo,

 

Why in the draft , PSP and USD flavors are covered. = Why not USP flavor ?

 

For example:

The uN is a short notation for the En= d behavior with NEXT-CSID, PSP and USD flavors

The uA local behavior is a short nota= tion for the End.X behavior with NEXT-CSID, PSP and USD flavors<= /span>

 

Thanks

Rajesh

 

 

 

Juniper Business Use Only

From: Pablo Camarillo (pcamaril) <pcamaril= =3D40cisco.com@dmarc.ietf.org>
Sent: Thursday, April 7, 2022 7:23 PM
To: Rajesh M <mrajesh@juniper.net>; spring@ietf.org
Subject: RE: draft-filsfils-spring-net-pgm-extension-srv6-usid-12

 

<= span lang=3D"ES" style=3D"font-size:10.5pt;font-family:"Lato",san= s-serif;color:black">[External Email. Be cautious of content]

 

Hi Rajesh,

 

Yes, that is correct.

 

Cheers,

Pablo.

 

From: spring <spring-bounces@ietf.org> On Behalf Of Rajesh M
Sent: domingo, 3 de abril de 2022 12:26
To: spring@ietf.org
Subject: [spring] draft-filsfils-spring-net-pgm-extension-srv6-usid-= 12

 

If the uSID len= gth is 16 then function length in case of uA,uDT,uDX must be 16 ?

If the uSID len= gth is 32 then function length in case of uA,uDT,uDX must be 32?=

 <= /p>

 

Juniper Business Use Only

--_000_SA1PR05MB82103639946DC13BF40DCEEABEEA9SA1PR05MB8210namp_-- From nobody Mon Apr 11 07:32:17 2022 Return-Path: X-Original-To: spring@ietf.org Delivered-To: spring@ietfa.amsl.com Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id 0203C3A184B; Mon, 11 Apr 2022 07:31:06 -0700 (PDT) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: internet-drafts@ietf.org To: Cc: spring@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 7.46.0 Auto-Submitted: auto-generated Precedence: bulk Reply-To: spring@ietf.org Message-ID: <164968746593.17740.460756709167141357@ietfa.amsl.com> Date: Mon, 11 Apr 2022 07:31:06 -0700 Archived-At: Subject: [spring] I-D Action: draft-hu-spring-segment-routing-proxy-forwarding-19.txt X-BeenThere: spring@ietf.org X-Mailman-Version: 2.1.29 List-Id: "Source Packet Routing in NetworkinG \(SPRING\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 11 Apr 2022 14:31:07 -0000 A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Source Packet Routing in Networking WG of the IETF. Title : SR-TE Path Midpoint Restoration Authors : Zhibo Hu Huaimo Chen Junda Yao Chris Bowers Yongqing Yisong Filename : draft-hu-spring-segment-routing-proxy-forwarding-19.txt Pages : 14 Date : 2022-04-11 Abstract: Segment Routing Traffic Engineering (SR-TE) supports explicit paths using segment lists containing adjacency-SIDs, node-SIDs and binding- SIDs. The current SR FRR such as TI-LFA provides fast re-route protection for the failure of a node along a SR-TE path by the direct neighbor or say point of local repair (PLR) to the failure. However, once the IGP converges, the SR FRR is no longer sufficient to forward traffic of the path around the failure, since the non-neighbors of the failure will no longer have a route to the failed node. This document describes a mechanism for the restoration of the routes to the failure of a SR-MPLS TE path after the IGP converges. It provides the restoration of the routes to an adjacency segment, a node segment and a binding segment of the path. With the restoration of the routes to the failure, the traffic is continuously sent to the neighbor of the failure after the IGP converges. The neighbor as a PLR fast re-routes the traffic around the failure. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-hu-spring-segment-routing-proxy-forwarding/ There is also an htmlized version available at: https://datatracker.ietf.org/doc/html/draft-hu-spring-segment-routing-proxy-forwarding-19 A diff from the previous version is available at: https://www.ietf.org/rfcdiff?url2=draft-hu-spring-segment-routing-proxy-forwarding-19 Internet-Drafts are also available by rsync at rsync.ietf.org::internet-drafts From nobody Mon Apr 11 09:54:58 2022 Return-Path: X-Original-To: spring@ietf.org Delivered-To: spring@ietfa.amsl.com Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id EED393A0143; Mon, 11 Apr 2022 09:54:56 -0700 (PDT) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: IETF Secretariat To: Cc: ipr-announce@ietf.org, spring@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 7.46.0 Auto-Submitted: auto-generated Precedence: bulk Message-ID: <164969609697.1420.4107883194711909595@ietfa.amsl.com> Date: Mon, 11 Apr 2022 09:54:56 -0700 Archived-At: Subject: [spring] IPR Disclosure Huawei Technologies Co., Ltd's Statement about IPR related to draft-ietf-spring-sr-replication-segment X-BeenThere: spring@ietf.org X-Mailman-Version: 2.1.29 List-Id: "Source Packet Routing in NetworkinG \(SPRING\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 11 Apr 2022 16:54:57 -0000 Dear Daniel Voyer, Clarence Filsfils, Rishabh Parekh, Hooman Bidgoli, Zhaohui (Jeffrey) Zhang: An IPR disclosure that pertains to your Internet-Draft entitled "SR Replication Segment for Multi-point Service Delivery" (draft-ietf-spring-sr-replication-segment) was submitted to the IETF Secretariat on 2022-04-11 and has been posted on the "IETF Page of Intellectual Property Rights Disclosures" (https://datatracker.ietf.org/ipr/5612/). The title of the IPR disclosure is "Huawei Technologies Co.,Ltd's Statement about IPR related to draft-ietf-spring-sr-replication-segment" Thank you IETF Secretariat From nobody Tue Apr 12 10:07:42 2022 Return-Path: X-Original-To: spring@ietfa.amsl.com Delivered-To: spring@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 79C4A3A0DEA for ; Tue, 12 Apr 2022 10:07:38 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -9.605 X-Spam-Level: X-Spam-Status: No, score=-9.605 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, HTML_MESSAGE=0.001, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_NONE=0.001, T_SCC_BODY_TEXT_LINE=-0.01, URIBL_BLOCKED=0.001, USER_IN_DEF_DKIM_WL=-7.5] autolearn=unavailable autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=cisco.com header.b=XZIHRyWL; 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boundary="_000_DM8PR11MB5719C2A266F27FC4C705325FC9ED9DM8PR11MB5719namp_" MIME-Version: 1.0 X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: DM8PR11MB5719.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 1d88084d-141b-401d-4ea3-08da1ca6e9fb X-MS-Exchange-CrossTenant-originalarrivaltime: 12 Apr 2022 17:07:24.0962 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 5ae1af62-9505-4097-a69a-c1553ef7840e X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: u4TOD3Wl35wzilTQLwp7n+dulioWVBVjiew/CwOChN7ys+MjdcOgVvPqzut507Lke/z1lEZ2pDMPwUBIakK0JQ== X-MS-Exchange-Transport-CrossTenantHeadersStamped: BL3PR11MB5698 X-OriginatorOrg: cisco.com X-Outbound-SMTP-Client: 173.37.135.125, xfe-aln-005.cisco.com X-Outbound-Node: alln-core-1.cisco.com Archived-At: Subject: Re: [spring] draft-filsfils-spring-net-pgm-extension-srv6-usid-12 X-BeenThere: spring@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Source Packet Routing in NetworkinG \(SPRING\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 12 Apr 2022 17:07:39 -0000 --_000_DM8PR11MB5719C2A266F27FC4C705325FC9ED9DM8PR11MB5719namp_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Hi Rajesh, The three flavors (PSP, USP and USD) are covered. See Section 10. draft-fil= sfils-spring-net-pgm-extension-srv6-usid-12 (ietf.org) You can use any of these combinations. Cheers, Pablo. From: Rajesh M Sent: lunes, 11 de abril de 2022 3:48 To: Pablo Camarillo (pcamaril) ; spring@ietf.org Subject: RE: draft-filsfils-spring-net-pgm-extension-srv6-usid-12 Hi Pablo, Why in the draft , PSP and USD flavors are covered. Why not USP flavor ? For example: The uN is a short notation for the End behavior with NEXT-CSID, PSP and USD= flavors The uA local behavior is a short notation for the End.X behavior with NEXT-= CSID, PSP and USD flavors Thanks Rajesh Juniper Business Use Only From: Pablo Camarillo (pcamaril) > Sent: Thursday, April 7, 2022 7:23 PM To: Rajesh M >; spring@ietf= .org Subject: RE: draft-filsfils-spring-net-pgm-extension-srv6-usid-12 [External Email. Be cautious of content] Hi Rajesh, Yes, that is correct. Cheers, Pablo. From: spring > On B= ehalf Of Rajesh M Sent: domingo, 3 de abril de 2022 12:26 To: spring@ietf.org Subject: [spring] draft-filsfils-spring-net-pgm-extension-srv6-usid-12 If the uSID length is 16 then function length in case of uA,uDT,uDX must be= 16 ? If the uSID length is 32 then function length in case of uA,uDT,uDX must be= 32? Juniper Business Use Only --_000_DM8PR11MB5719C2A266F27FC4C705325FC9ED9DM8PR11MB5719namp_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Hi Rajesh,

 

The three flavors (PSP, USP and USD) are covered. See Section 10. draft-fi= lsfils-spring-net-pgm-extension-srv6-usid-12 (ietf.org)

You can use any of these combinations.

 

Cheers,

Pablo.

 

From: Rajesh M <mrajesh=3D40juniper.net@dmarc.ietf.org>
Sent: lunes, 11 de abril de 2022 3:48
To: Pablo Camarillo (pcamaril) <pcamaril@cisco.com>; spring@ie= tf.org
Subject: RE: draft-filsfils-spring-net-pgm-extension-srv6-usid-12

 

Hi Pablo,

 

Why in the draft , PSP and USD = flavors are covered. Why not USP flavor ?

 

For example:<= /p>

The uN is a short nota= tion for the End behavior with NEXT-CSID, PSP and USD flavors

The uA local behavior = is a short notation for the End.X behavior with NEXT-CSID, PSP and USD flav= ors

 

Thanks

Rajesh

 

 

 

Juniper Business= Use Only

From: Pablo Camarillo (pcamaril) <pcamaril=3D40cisco.com= @dmarc.ietf.org>
Sent: Thursday, April 7, 2022 7:23 PM
To: Rajesh M <mrajesh@juniper.net>; spring@ietf.= org
Subject: RE: draft-filsfils-spring-net-pgm-extension-srv6-usid-12

 

<= span lang=3D"EN-US" style=3D"font-size:10.5pt;font-family:"Lato",= sans-serif;color:black">[External Email. Be cautious of content]=

 

Hi Rajesh,

 

Yes, that is correct.

 

Cheers,

Pablo.

 

From: spring <spring-bounces@ietf.org&= gt; On Behalf Of Rajesh M
Sent: domingo, 3 de abril de 2022 12:26
To: s= pring@ietf.org
Subject: [spring] draft-filsfils-spring-net-pgm-extension-srv6-usid-= 12

 

If the uSID length is 16 then function length in case of uA,uDT,uDX must be= 16 ?

If the uSID length is 32 then function length in case of uA,uDT,uDX must be= 32?

 = ;

 

Juniper Business= Use Only

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charset="us-ascii" Content-Transfer-Encoding: quoted-printable Salih, Inline with PC. Cheers, Pablo. From: Salih K A Sent: jueves, 7 de abril de 2022 9:21 To: SPRING WG Cc: Darren Dukes (ddukes) ; Pablo Cama= rillo (pcamaril) Subject: Query : draft-filsfils-spring-net-pgm-extension-srv6-usid-12 Can you please clarify whether Function Length (FL) will be 0 or 16 for the= below uN use-case ? [PC] FL=3D0 as explained later >> Assume we have a uN advertised from Node N * Value =3D 2001:db8:0:0N00:: * Behavior =3D uN * Structure =3D - LBL =3D 48 - LNL =3D 16 - FL =3D 0 - AL =3D 64 Now say we need 2 flavors for that uN; one with just USD flavor and another= with just USP flavor. Will that be 2001:db8:0:0N00:0000::/80 for USD and 2001:db8:0:0N00:0001::/8= 0 for USP? In these 2 SID advertisements the FL will be 16? or do we need separate uN from same node for different flavors (all with im= plicit :0000::) with FL 0? [PC] The latter, separate uN with FL=3D0. Although in practice you will onl= y have a single uN per algo supported by the node, with the combination of = flavors that is supported on that device. Juniper Business Use Only --_000_DM8PR11MB57195B6175DA91875BEB1998C9ED9DM8PR11MB5719namp_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Salih,

 

Inline with PC.

 

Cheers,

Pablo.

 

 

From: Salih K A <salih@juniper.net>
Sent: jueves, 7 de abril de 2022 9:21
To: SPRING WG <spring@ietf.org>
Cc: Darren Dukes (ddukes) <ddukes=3D40cisco.com@dmarc.ietf.org>= ;; Pablo Camarillo (pcamaril) <pcamaril@cisco.com>
Subject: Query : draft-filsfils-spring-net-pgm-extension-srv6-usid-1= 2

 

Can you please clarify whether = Function Length (FL) will be 0 or 16 for the below uN use-case ?=

[PC] FL=3D0 as explained = later

 

>> Assume we have a uN ad= vertised from Node N

   *  Value= =3D 2001:db8:0:0N00::         = ; 

 

   *  Behavior = =3D uN

 

   *  Structure = =3D

 

      = -  LBL =3D 48

 

      = -  LNL =3D 16

 

      = -  FL =3D 0

 

      = -  AL =3D 64

     &= nbsp;       

Now say we need 2 flavors for t= hat uN; one with just USD flavor and another with just USP flavor.

 

Will that be 2001:db8:0:0N00:00= 00::/80 for USD and 2001:db8:0:0N00:0001::/80 for USP? In these 2 SID adver= tisements the FL will be 16?

or do we need separate uN from = same node for different flavors (all with implicit :0000::) with FL 0?=

[PC] The latter, separate uN with FL=3D0. Although in practic= e you will only have a single uN per algo supported by the node, with the c= ombination of flavors that is supported on that device.

 

 

 

Juniper Business= Use Only

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charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: DM8PR11MB5719.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: f6cfcdb7-c82a-433a-7b14-08da1ca7554a X-MS-Exchange-CrossTenant-originalarrivaltime: 12 Apr 2022 17:10:24.1626 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 5ae1af62-9505-4097-a69a-c1553ef7840e X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: Rn8n2PY8J5alBWjfnOAulsDrIfyGhYnBAQhxheYGTwPPCCwgyG3Rv/4FzaZH5akQES64RTJyX8kr2RW8L59cQg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN7PR11MB2612 X-OriginatorOrg: cisco.com X-Outbound-SMTP-Client: 173.37.135.125, xfe-aln-005.cisco.com X-Outbound-Node: alln-core-12.cisco.com Archived-At: Subject: Re: [spring] NEXT-ONLY-CSID in draft-filsfils-spring-net-pgm-extension-srv6-usid-12 X-BeenThere: spring@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Source Packet Routing in NetworkinG \(SPRING\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 12 Apr 2022 17:11:04 -0000 Hi Joel, Inline with PC. Cheers, Pablo. -----Original Message----- From: Joel M. Halpern =20 Sent: jueves, 7 de abril de 2022 19:09 To: Pablo Camarillo (pcamaril) ; Trevor Mendez ; spring@ietf.org Subject: Re: [spring] NEXT-ONLY-CSID in draft-filsfils-spring-net-pgm-exten= sion-srv6-usid-12 (speaking as a WG member trying to understand this exchange.) Having two codes, one for NEXT-ONLY-CSID and one for NEXT-CSID seems odd. [PC] Those are two different packet processing, and hence two different SRv= 6 Endpoint Behavior values from IANA. In terms of what the node does with packets addressed to SIDs with the give= n behavior, they seem to be the same. [PC] No they are not. NEXT-ONLY only processes the ::/64 of the 4.1.1; wher= eas NEXT-CSID processes both. Perhaps this can be clarified in further revi= sions. So if I understand properly, the different is an implication about the exis= tence of SIDs for this node with other behaviors? But wouldn't receivers d= etermine such behavior being available from the advertisements of those beh= aviors? [PC] Not sure I follow these two, but I don't think its correct. If there are no other advertised (compressed?) behaviors, wouldn't that t= ell you everything you need to know. =20 If there are such other advertiements, but 42 (NEXT-ONLY-CSID) is advertise= d what would that mean? =20 [PC] That you are only capable of doing the shifting operation. And conversely, if there are no other advertised relevant behaviors, what w= ould it mean to advertise 43 (NEXT-CSID)? [PC] That you are capable of processing the whole 4.1.1. We will clarify th= is in future revisions. Yours, Joel On 4/7/2022 9:52 AM, Pablo Camarillo (pcamaril) wrote: > Hi Trevor, >=20 > This refers to a node that only processes the ::/64 (shift-and-lookup)=20 > of 4.1.1. >=20 > Cheers, >=20 > Pablo. >=20 > *From:*spring *On Behalf Of *Trevor Mendez > *Sent:* viernes, 25 de marzo de 2022 19:20 > *To:* spring@ietf.org > *Subject:* [spring] NEXT-ONLY-CSID in > draft-filsfils-spring-net-pgm-extension-srv6-usid-12 >=20 > Hi all, >=20 > What is the meaning of NEXT-ONLY-CSID?=A0 It isn't clear to me what the=20 > difference is between 42 and 43 below? >=20 > =A0=A0=20 > +=3D=3D=3D=3D=3D=3D=3D+=3D=3D=3D=3D=3D=3D=3D=3D+=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D+=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D+ >=20 > =A0=A0 | Value |=A0 Hex=A0=A0 |=A0=A0=A0=A0=A0=A0=A0=A0=A0 Endpoint beha= vior=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 |=20 > Reference | >=20 > =A0=A0=20 > +=3D=3D=3D=3D=3D=3D=3D+=3D=3D=3D=3D=3D=3D=3D=3D+=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D+=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D+ >=20 > =A0=A0 | 42=A0=A0=A0 | 0x002A |=A0=A0=A0=A0=A0=A0 End with NEXT-ONLY-CSI= D=A0=A0=A0=A0=A0=A0=A0 |=20 > [This.ID] | >=20 > =A0=A0=20 > +-------+--------+--------------------------------------+-----------+ >=20 > =A0=A0 | 43=A0=A0=A0 | 0x002B |=A0=A0=A0=A0=A0=A0=A0=A0=A0 End with NEXT= -CSID=A0=A0=A0=A0=A0=A0=A0=A0=A0 |=20 > [This.ID] | >=20 > =A0=A0=20 > +-------+--------+--------------------------------------+-----------+ >=20 > (Looks like a similar question was asked before here=20 > JYA/>, > but I didn't see an=A0answer.) >=20 >=20 > Thanks, > Trevor >=20 >=20 > _______________________________________________ > spring mailing list > spring@ietf.org > https://www.ietf.org/mailman/listinfo/spring From nobody Tue Apr 12 10:13:07 2022 Return-Path: X-Original-To: spring@ietfa.amsl.com Delivered-To: spring@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 9605B3A0EF9; 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charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: DM8PR11MB5719.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 577fa704-fd06-415e-b36a-08da1ca7afb1 X-MS-Exchange-CrossTenant-originalarrivaltime: 12 Apr 2022 17:12:55.8340 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 5ae1af62-9505-4097-a69a-c1553ef7840e X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: OvMAPgulJd/uKvctTW88indR2i/ErpFs4XIzijTp4K3eusfcjvobzZpC/uQstNTXxSGcKlQXh/xKFtfPYUqf1g== X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH0PR11MB5521 X-OriginatorOrg: cisco.com X-Outbound-SMTP-Client: 173.37.227.253, xfe-rcd-005.cisco.com X-Outbound-Node: rcdn-core-4.cisco.com Archived-At: Subject: Re: [spring] [ippm] FW: New Version Notification for draft-filsfils-spring-path-tracing-00.txt X-BeenThere: spring@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Source Packet Routing in NetworkinG \(SPRING\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 12 Apr 2022 17:13:06 -0000 Hi Ruediger, Many thanks for your email. Glad you appreciate the PT proposal for SRv6 ne= tworks. We have experimental implementation at linerate in Broadcom Jericho 2, Cisc= o Silicon One, Marvell Prestera, and Cisco ASR9k (as well of opensource sof= tware). It would be great to hear from other vendors whether they can proce= ss this at linerate as well. With regards to the SR-MPLS draft, we are finalizing the text and we will p= ost it soon for feedback. With regards to the time-synchronization considerations, many thanks on you= r feedback. We agree with you, and we'll add more considerations in the nex= t revision. Thanks, Pablo. -----Original Message----- From: Ruediger.Geib@telekom.de =20 Sent: viernes, 1 de abril de 2022 11:12 To: ahabdels=3D40cisco.com@dmarc.ietf.org Cc: spring@ietf.org; ippm@ietf.org; draft-filsfils-spring-path-tracing@ietf= .org Subject: [ippm] FW: New Version Notification for draft-filsfils-spring-path= -tracing-00.txt Hi Ahmed, Thanks for the draft. I appreciate the small and well specified format of t= he measurement and hope that endpoints and transit routers supporting Path = Tracing in SRv6 networks are able to fill in the specified fields at linera= te during forwarding. I'd also appreciate an SR-MPLS version of the draft. I'd suggest to add more text related to the following statement: Note: all routers across the network MUST have time- synchronization. The mechanism used for time synchronization is out of the scope of this draft. An operator should be able to qualify an applicable time-synchronisation by= guidance of the draft. If Truncated Timestamp configuration depends on the= precision of time synchronization, guidance for interested operators shoul= d be part of the draft. The choice of timestamp resolution may further depe= nd on locally configured buffers. A Truncated Timestamp working well in the= absence of congestion, but creating erroneous information with the onset o= f congestion might not be desired. Maybe a discussion on wrapping / overflo= w may help too. Finally, the precision of the synchronization needs to be m= onitored. That may be done out of band, but centralized processing should = be aware of timestamps created by a router with (temporarily) bad synch. A = temporal change in precision of or a loss of synch are common networking s= ynch-events. While the mechanism used for time synchronization doesn't need to be define= d in the draft, a reference to some applicable synchronization mechanisms w= ould be helpful. The list doesn't have to be complete, please add some comm= odity examples. Editorial nit: To me, a binding "Requirement" shouldn't be a "Note". Regards, Ruediger On Wed, Mar 9, 2022 at 4:14 PM Ahmed Abdelsalam (ahabdels) wrote: > > Dear SPRING WG, IPPM WG, > > We have submitted a new I-D for Path Tracing in SRv6 networks (https://da= tatracker.ietf.org/doc/html/draft-filsfils-spring-path-tracing) to SPRING W= G. > We are looking for your feedback and comments. > Path Tracing provides a record of the packet path as a sequence of interf= ace ids. In addition, it provides a record of end-to-end delay, per-hop del= ay, and load on each egress interface along the packet delivery path to fac= ilitate operation of SR networks. > > > > Path Tracing allows to trace 14 hops with only a 40-octet IPv6 Hop-by-Hop= extension header. > > > We will present Path Tracing to the SPRING WG at next IETF > (https://datatracker.ietf.org/meeting/113/materials/agenda-113-spring- > 00.txt) > > > > Thanks, > > Ahmed > > > > From: internet-drafts@ietf.org > Date: Friday, 4 March 2022 at 16:48 > To: Ahmed Abdelsalam (ahabdels) , cf(mailer list)=20 > , Mark Yufit , Pablo Camarillo > (pcamaril) , Pablo Camarillo (pcamaril)=20 > , Satoru Matsushima=20 > , Thomas.Graf=20 > , Yuanchao Su > Subject: New Version Notification for=20 > draft-filsfils-spring-path-tracing-00.txt > > > A new version of I-D, draft-filsfils-spring-path-tracing-00.txt > has been successfully submitted by Pablo Camarillo Garvia and posted=20 > to the IETF repository. > > Name: draft-filsfils-spring-path-tracing > Revision: 00 > Title: Path Tracing in SRv6 networks > Document date: 2022-03-04 > Group: Individual Submission > Pages: 15 > URL: https://www.ietf.org/archive/id/draft-filsfils-spring-pat= h-tracing-00.txt > Status: https://datatracker.ietf.org/doc/draft-filsfils-spring-pa= th-tracing/ > Htmlized: https://datatracker.ietf.org/doc/html/draft-filsfils-spri= ng-path-tracing > > > Abstract: > Path Tracing provides a record of the packet path as a sequence of > interface ids. In addition, it provides a record of end-to-end > delay, per-hop delay, and load on each egress interface along the > packet delivery path. > > Path Tracing allows to trace 14 hops with only a 40-bytes IPv6 Hop- > by-Hop extension header. > > Path Tracing supports fine grained timestamp. It has been designed > for linerate hardware implementation in the base pipeline. > > > > > The IETF Secretariat > > _______________________________________________ > ippm mailing list > ippm@ietf.org > https://www.ietf.org/mailman/listinfo/ippm _______________________________________________ ippm mailing list ippm@ietf.org https://www.ietf.org/mailman/listinfo/ippm From nobody Tue Apr 12 10:21:50 2022 Return-Path: X-Original-To: spring@ietfa.amsl.com Delivered-To: spring@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 237E93A1117 for ; Tue, 12 Apr 2022 10:21:49 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -7.109 X-Spam-Level: X-Spam-Status: No, score=-7.109 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, NICE_REPLY_A=-0.001, RCVD_IN_DNSWL_HI=-5, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=joelhalpern.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id tOGQUnA6EF1l for ; Tue, 12 Apr 2022 10:21:44 -0700 (PDT) Received: from mailb2.tigertech.net (mailb2.tigertech.net [208.80.4.154]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 55AA03A1114 for ; Tue, 12 Apr 2022 10:21:44 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by mailb2.tigertech.net (Postfix) with ESMTP id 4KdCFN1B0Nz1ny8w; Tue, 12 Apr 2022 10:21:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=joelhalpern.com; s=2.tigertech; t=1649784104; bh=ha3RvxawwAFZY8f/DIT4hetsV+zwMoStVbts7Gl2ylk=; h=Date:Subject:To:References:From:In-Reply-To:From; b=fsPYNQaFhUsz0YB6mjN6DWI8e5KZuYuo/4AhmvQEcI1t2R59aTRiVBoVxDs+njk8j /pDNtVBunhuuc/XyjS4t2kEb3okBP7kmlezUpIbKOBqFZTDZrQ1Nw8FeNSLBIWPQRS /5QSlKbqqk7t2tqGy3wwIAhKW6h+IHCJQJkPZIKE= X-Quarantine-ID: X-Virus-Scanned: Debian amavisd-new at b2.tigertech.net Received: from [192.168.21.218] (50-233-136-230-static.hfc.comcastbusiness.net [50.233.136.230]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mailb2.tigertech.net (Postfix) with ESMTPSA id 4KdCFL51nHz1nwp8; Tue, 12 Apr 2022 10:21:41 -0700 (PDT) Message-ID: <1038c27a-03ce-6507-cd9f-9c499b08482f@joelhalpern.com> Date: Tue, 12 Apr 2022 13:21:40 -0400 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Thunderbird/91.8.0 Content-Language: en-US To: "Pablo Camarillo (pcamaril)" , "spring@ietf.org" References: From: "Joel M. Halpern" In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Archived-At: Subject: Re: [spring] NEXT-ONLY-CSID in draft-filsfils-spring-net-pgm-extension-srv6-usid-12 X-BeenThere: spring@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Source Packet Routing in NetworkinG \(SPRING\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 12 Apr 2022 17:21:49 -0000 Thanks. I think I now understand what the "only" is trying to say. To make sure, if a node advertises a SID with "ONLY", then that compressed SID can not be the last SID in a container, as the node is saying that it is not able to do the rest of the required work. An interesting form of conformance, but I will leave that to the rest of the WG to discuss. Yours, Joel On 4/12/2022 1:10 PM, Pablo Camarillo (pcamaril) wrote: > Hi Joel, > Inline with PC. > Cheers, > Pablo. > > -----Original Message----- > From: Joel M. Halpern > Sent: jueves, 7 de abril de 2022 19:09 > To: Pablo Camarillo (pcamaril) ; Trevor Mendez ; spring@ietf.org > Subject: Re: [spring] NEXT-ONLY-CSID in draft-filsfils-spring-net-pgm-extension-srv6-usid-12 > > (speaking as a WG member trying to understand this exchange.) > > Having two codes, one for NEXT-ONLY-CSID and one for NEXT-CSID seems odd. > [PC] Those are two different packet processing, and hence two different SRv6 Endpoint Behavior values from IANA. > In terms of what the node does with packets addressed to SIDs with the given behavior, they seem to be the same. > [PC] No they are not. NEXT-ONLY only processes the ::/64 of the 4.1.1; whereas NEXT-CSID processes both. Perhaps this can be clarified in further revisions. > So if I understand properly, the different is an implication about the existence of SIDs for this node with other behaviors? But wouldn't receivers determine such behavior being available from the advertisements of those behaviors? > [PC] Not sure I follow these two, but I don't think its correct. > If there are no other advertised (compressed?) behaviors, wouldn't that tell you everything you need to know. > If there are such other advertiements, but 42 (NEXT-ONLY-CSID) is advertised what would that mean? > [PC] That you are only capable of doing the shifting operation. > And conversely, if there are no other advertised relevant behaviors, what would it mean to advertise 43 (NEXT-CSID)? > [PC] That you are capable of processing the whole 4.1.1. We will clarify this in future revisions. > > Yours, > Joel > > On 4/7/2022 9:52 AM, Pablo Camarillo (pcamaril) wrote: >> Hi Trevor, >> >> This refers to a node that only processes the ::/64 (shift-and-lookup) >> of 4.1.1. >> >> Cheers, >> >> Pablo. >> >> *From:*spring *On Behalf Of *Trevor Mendez >> *Sent:* viernes, 25 de marzo de 2022 19:20 >> *To:* spring@ietf.org >> *Subject:* [spring] NEXT-ONLY-CSID in >> draft-filsfils-spring-net-pgm-extension-srv6-usid-12 >> >> Hi all, >> >> What is the meaning of NEXT-ONLY-CSID?  It isn't clear to me what the >> difference is between 42 and 43 below? >> >> >> +=======+========+======================================+===========+ >> >>    | Value |  Hex   |          Endpoint behavior           | >> Reference | >> >> >> +=======+========+======================================+===========+ >> >>    | 42    | 0x002A |       End with NEXT-ONLY-CSID        | >> [This.ID] | >> >> >> +-------+--------+--------------------------------------+-----------+ >> >>    | 43    | 0x002B |          End with NEXT-CSID          | >> [This.ID] | >> >> >> +-------+--------+--------------------------------------+-----------+ >> >> (Looks like a similar question was asked before here >> > JYA/>, >> but I didn't see an answer.) >> >> >> Thanks, >> Trevor >> >> >> _______________________________________________ >> spring mailing list >> spring@ietf.org >> https://www.ietf.org/mailman/listinfo/spring From nobody Tue Apr 12 16:43:30 2022 Return-Path: X-Original-To: spring@ietfa.amsl.com Delivered-To: spring@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 83A253A06E7; 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Tue, 12 Apr 2022 23:43:15 +0000 From: Rajesh M To: "Pablo Camarillo (pcamaril)" , "spring@ietf.org" Thread-Topic: draft-filsfils-spring-net-pgm-extension-srv6-usid-12 Thread-Index: AdhHRG/LgpiIb46LS+GHzUpFOEqdHgCWe6+QAOmwGmAADQo4sABTUTfQ Date: Tue, 12 Apr 2022 23:43:15 +0000 Message-ID: References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: dlp-product: dlpe-windows dlp-version: 11.6.400.34 dlp-reaction: no-action msip_labels: MSIP_Label_0633b888-ae0d-4341-a75f-06e04137d755_Enabled=true; MSIP_Label_0633b888-ae0d-4341-a75f-06e04137d755_SetDate=2022-04-12T23:43:10Z; MSIP_Label_0633b888-ae0d-4341-a75f-06e04137d755_Method=Standard; MSIP_Label_0633b888-ae0d-4341-a75f-06e04137d755_Name=0633b888-ae0d-4341-a75f-06e04137d755; MSIP_Label_0633b888-ae0d-4341-a75f-06e04137d755_SiteId=bea78b3c-4cdb-4130-854a-1d193232e5f4; MSIP_Label_0633b888-ae0d-4341-a75f-06e04137d755_ActionId=9ea47aeb-8f08-4c93-b0a8-155f962eb1fb; MSIP_Label_0633b888-ae0d-4341-a75f-06e04137d755_ContentBits=2 x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 2948c81f-b902-43bb-aedf-08da1cde36c0 x-ms-traffictypediagnostic: DM6PR05MB5913:EE_ x-ms-exchange-atpmessageproperties: SA|SL x-microsoft-antispam-prvs: x-ms-exchange-senderadcheck: 1 x-ms-exchange-antispam-relay: 0 x-microsoft-antispam: BCL:0; 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boundary="_000_SA1PR05MB8210F15370165A47844F5927BEED9SA1PR05MB8210namp_" MIME-Version: 1.0 X-OriginatorOrg: juniper.net X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: SA1PR05MB8210.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 2948c81f-b902-43bb-aedf-08da1cde36c0 X-MS-Exchange-CrossTenant-originalarrivaltime: 12 Apr 2022 23:43:15.2636 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: bea78b3c-4cdb-4130-854a-1d193232e5f4 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: TMSPy+6h8R2fIqXaRtbVGG4wMLdM38Y6LU9HHTlzk5DD9l/eBGWSPwPczPup3HBQlHgVvwzvfhF4cpF6rpVq5Q== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM6PR05MB5913 X-Proofpoint-ORIG-GUID: SAjofEXS7XuKffnipLTBL1PIY_vw0y9I X-Proofpoint-GUID: SAjofEXS7XuKffnipLTBL1PIY_vw0y9I X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.858,Hydra:6.0.486,FMLib:17.11.64.514 definitions=2022-04-12_06,2022-04-12_02,2022-02-23_01 X-Proofpoint-Spam-Details: rule=outbound_spam_notspam policy=outbound_spam score=0 clxscore=1015 impostorscore=0 suspectscore=0 priorityscore=1501 mlxscore=0 mlxlogscore=999 lowpriorityscore=0 adultscore=0 bulkscore=0 phishscore=0 malwarescore=0 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2202240000 definitions=main-2204120105 Archived-At: Subject: Re: [spring] draft-filsfils-spring-net-pgm-extension-srv6-usid-12 X-BeenThere: spring@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Source Packet Routing in NetworkinG \(SPRING\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 12 Apr 2022 23:43:29 -0000 --_000_SA1PR05MB8210F15370165A47844F5927BEED9SA1PR05MB8210namp_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Hi Pablo, Section 10 its mentioned, that I am aware. Then can I safely derive The uN is a short notation for the End behavior with NEXT-CSID, PSP,USP and= USD flavors The uA local behavior is a short notation for the End.X behavior with NEXT-= CSID, PSP,USP and USD flavors If Yes, better to update the draft. Thanks Rajesh Juniper Business Use Only From: Pablo Camarillo (pcamaril) Sent: Tuesday, April 12, 2022 10:37 PM To: Rajesh M ; spring@ietf.org Subject: RE: draft-filsfils-spring-net-pgm-extension-srv6-usid-12 [External Email. Be cautious of content] Hi Rajesh, The three flavors (PSP, USP and USD) are covered. See Section 10. draft-fil= sfils-spring-net-pgm-extension-srv6-usid-12 (ietf.org) You can use any of these combinations. Cheers, Pablo. From: Rajesh M > Sent: lunes, 11 de abril de 2022 3:48 To: Pablo Camarillo (pcamaril) >; spring@ietf.org Subject: RE: draft-filsfils-spring-net-pgm-extension-srv6-usid-12 Hi Pablo, Why in the draft , PSP and USD flavors are covered. Why not USP flavor ? For example: The uN is a short notation for the End behavior with NEXT-CSID, PSP and USD= flavors The uA local behavior is a short notation for the End.X behavior with NEXT-= CSID, PSP and USD flavors Thanks Rajesh Juniper Business Use Only From: Pablo Camarillo (pcamaril) > Sent: Thursday, April 7, 2022 7:23 PM To: Rajesh M >; spring@ietf= .org Subject: RE: draft-filsfils-spring-net-pgm-extension-srv6-usid-12 [External Email. Be cautious of content] Hi Rajesh, Yes, that is correct. Cheers, Pablo. From: spring > On B= ehalf Of Rajesh M Sent: domingo, 3 de abril de 2022 12:26 To: spring@ietf.org Subject: [spring] draft-filsfils-spring-net-pgm-extension-srv6-usid-12 If the uSID length is 16 then function length in case of uA,uDT,uDX must be= 16 ? If the uSID length is 32 then function length in case of uA,uDT,uDX must be= 32? Juniper Business Use Only --_000_SA1PR05MB8210F15370165A47844F5927BEED9SA1PR05MB8210namp_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Hi Pablo,

 

Section 10 its mentioned, that I am aware. Then can = I safely derive

 

The uN is a short notation for the En= d behavior with NEXT-CSID, PSP,USP = and USD flavors

The uA local behavior is a short nota= tion for the End.X behavior with NEXT-CSID, PSP,USP and USD flavors

 

If Yes, better to update the draft.

 

Thanks

Rajesh

 

 

 

Juniper Business Use Only

From: Pablo Camarillo (pcamaril) <pcamaril= =3D40cisco.com@dmarc.ietf.org>
Sent: Tuesday, April 12, 2022 10:37 PM
To: Rajesh M <mrajesh@juniper.net>; spring@ietf.org
Subject: RE: draft-filsfils-spring-net-pgm-extension-srv6-usid-12

 

<= span lang=3D"ES" style=3D"font-size:10.5pt;font-family:"Lato",san= s-serif;color:black">[External Email. Be cautious of content]

 

Hi Rajesh,

 

The three flavors (PSP, USP and USD) are covered. Se= e Section 10. draft-filsfils-spring-net-pgm-extens= ion-srv6-usid-12 (ietf.org)

You can use any of these combinations.

 

Cheers,

Pablo.

 

From: Rajesh M <mrajesh=3D40juniper.net@dmarc.ietf.org= >
Sent: lunes, 11 de abril de 2022 3:48
To: Pablo Camarillo (pcamaril) <pcamaril@cisco.com>; spring@ietf.org
Subject: RE: draft-filsfils-spring-net-pgm-extension-srv6-usid-12

 

Hi Pablo,

 

Why in the draft , PSP and USD flavors are covered. = Why not USP flavor ?

 

For example:

The uN is a short notation for the En= d behavior with NEXT-CSID, PSP and USD flavors

The uA local behavior is a short nota= tion for the End.X behavior with NEXT-CSID, PSP and USD flavors<= /span>

 

Thanks

Rajesh

 

 

 

Juniper Business Use Only

From: Pablo Camarillo (pcamaril) <pcamaril=3D40cisco.com@dmarc.ietf.org>
Sent: Thursday, April 7, 2022 7:23 PM
To: Rajesh M <mrajesh@juniper.net>; s= pring@ietf.org
Subject: RE: draft-filsfils-spring-net-pgm-extension-srv6-usid-12

 

<= span style=3D"font-size:10.5pt;font-family:"Lato",sans-serif;colo= r:black">[External Email. Be cautious of content]

 

Hi Rajesh,

 

Yes, that is correct.

 

Cheers,

Pablo.

 

From: spring <spring-bounces@ietf.o= rg> On Behalf Of Rajesh M
Sent: domingo, 3 de abril de 2022 12:26
To: spring@ietf.org
Subject: [spring] draft-filsfils-spring-net-pgm-extension-srv6-usid-= 12

 

If the uSID len= gth is 16 then function length in case of uA,uDT,uDX must be 16 ?

If the uSID len= gth is 32 then function length in case of uA,uDT,uDX must be 32?=

 <= /p>

 

Juniper Business Use Only

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