2009/12/13 <netext-request@ietf.org>

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Today's Topics= :

1. IETF76 Meeting minutes (Basavaraj.Patil@nokia.com)

---------- =D2=D1=D7= =AA=B7=A2=D3=CA=BC=FE ----------
From: <Basavaraj.Patil= @nokia.com>
To: <netex= t@ietf.org>
Date: Fri, 11 Dec 2009 22:56:30 +0100
Subject= : [netext] IETF76 Meeting minutes

Network-Based Mobility Extensions (netext) WG Minutes
IETF 76
WEDNESDAY, November 11, 2009, 1300-1500 Afternoon Session I

Chairs:= Basavaraj Patil (basavaraj.pa= til@nokia.com)
Rajeev Koodli (rkoodli@stare= ntnetworks.com)

Credit for these minutes to: Antti Makela(antti = dot makela at tkk dot fi>

---------------------------------------= -----------

1. Agenda bashing, Blueseheets, Note takers, Jabber scribes &nb= sp; 5 Mins
Change in agenda: Flow Mobility and Inter= -technology handovers moved
to start due to conflicting schedule.=

2. PMIP6 extensions for inter-access, presenters Rajeev Koodli and<= br> Jari Arkko

http://www.ietf.org/proceedings/09no= v/slides/netext-12.ppt
and http://www.ietf.org/proceedi= ngs/09nov/slides/netext-6.pdf

Discussion on choices at
http://www.ietf.org/ma= il-archive/web/netext/current/msg00881.html and
slide 2 of JA's = presentation

JA: Recharter or new WG (Netext2?)

Jonne Soininen/NSN: Everythin= g is true, but Solution #1 is not needed
since IP does not notice anythi= ng, constrant to 2G/3G handover in 3GPP
JA: With different technologies = where MTU changes IP level needs to be
aware
JS: Virtual links depend on operating systems, different on Symbia= n
and FreeBSD
JA: We shouldn't provide implementation advice, onl= y conceptual
JS: Can it be done in high-level fashion?
Sri: We don= 9;t have triggering capability from UE -> MAG. How about
moving only partial set of flows to a new interface? What is the
&= nbsp;evolution path?
JA: Is triggering at L2 or L3? Discussion so far in= dicated that we
don't want L3 solution, possible PMIP extensio= ns would transfer
triggers around the nextwork but they'd still be L2 triggers. Wit= h L3
triggers you can't have inter-access handovers and = PMIP.
Sri: Can build everything on the network site, if triggering is ou= t-of-band?
RK: Regardless of choice with MAG interface signaling needed between<= br> LMA <-> MAG to allow for subset of flows being transf= erred

Juan-Carlos Zunlga: MAG <-> MN, Solution recommendations= should be
very specific Carlos J. Bernardos: I support writing BCP document
= Marcello: I think conclusions accurate.

Vote: Reasonable way f= orward, yes/no: ~ 17 yes, none no.

JA: Expecting text on the discuss= ion as a basis for a minor recharter
Sri: Can triggers come from link-layer and PMIP support it on network side?=
JA: Should be ok
Marcelo: There is no standard-track document on thi= s.

3. Runtime LMA Assignment Support for Proxy Mobile IPv6, Jouni Korhonen http://www.ietf.org/proceedings/09nov/slides/netext-8= .ppt
I-D: draft-ietf-netext-redirect-00

About 5 people have r= ead draft
No comments forthcoming

RK: What is the motivation for mid-session L= MA assignment?
JK: Currently assignment only applies to initial assignme= nt, input
needed for motivation - do people find this useful? Appl= ies to
handover cases where you might cross a boundary where administrator has decided to switch LMAs. Lots of assumptions in such cases (shar= ing
of mobility sessions etc)
RK: If session is anchored at spe= cific LMA, is there session continuity.
JK: Have you read draft?
RK: No
JK: Open question at the moment, ther= e is introduction to a discussion
in the draft
RK: I don't = think this should be done at all. Why both soft and hard
support n= eeded? Simpler approach needed, now three-level complexity.
JK: So, take handover exchange away, only apply assignment on initial
PB= U/PBA?
RK: Yes

Hidetoshi Yokota: Mid-session redirection, where L= MA sends back
different LMA, session would break.
BP: When you = a redirected to new MAG, the session should go to the
anchored LMA
HY: It's just an example
BP: Bad example.
<= br>Kent Leung: Why are we doing LMA reassignment during handover? I don'= ;t
see justification. Question: What is the option in PBU?
JK: = If we apply only in initial, we don't use option. Draft doesn't
comment on options yet.

4. Bulk Re-registration for Proxy Mobi= le IPv6, Basavaraj Patil
http://www.ietf.org/proceedings/09= nov/slides/netext-1.pdf
I-D: draft-premec-netlmm-bulk-re-registration-03

Marcos: Is this sam= e as group ID?
BP: Not to my understanding
Marcos: I propose merging = group ID with Charlie's draft
RK: Charlie's draft tries to combi= ne multiple ID's concerining single
node
Marcos: So, there's a connection, in this case we are jus= t doing it
for multiple nodes. Better to have all in single draft.=
BP: Charlie not here, but we can have different sets of IDs depending on policy. We can continue this on list.
Qin Wu: How do you define flag B, it has two purposes, what if both
&nbs= p;purposes happen at same time.
BP: We'll provide a clarification in= future revision.

Localized routing - PS and solutions discussion
5. PMIPv6 Localized Routing Problem Statement
http://ww= w.ietf.org/proceedings/09nov/slides/netext-2.ppt
draft-ietf-netext-p= mip6-lr-ps-01.txt
BJ: Few people have read the document, please send comments, also on
&nb= sp;the roaming model.
Glen Zoren(?): I was under impression that PMIP do= main was set of
nodes which could set up SA's between each oth= er - so you can have
dynamic domains.
Carlos: That's not incorrect as such, but can= 't make that assumption.
GZ: I didn't mean all PMIP entities in = the world.

6. draft-oulai-netext-opt-local-routing-01.txt, Sur= esh Krishnan
http://www.ietf.org/proceedings/09nov/slides/netext-9.ppt<= br>>
Kent Leung: Is the scope limited to some cases only
SK: Yes.<= br> BP: What do you mean by optimized handover?
SK: Not easy problem but if = there's RO between MAGs and MN switches
MAGs, we can use that<= br>KL: Is it possible to map the problem spaces of different solutions to different drafts for comparison?
BP: Yes, at least we can talk now= about them allow
Marcos: What does it mean "inter-MAG tunnel may b= e preconfigured"
SK: If some MAGs are close to one another, who can= expect handovers
between them, they can prepare for RO

7. draft-koodli-netext-l= ocal-forwarding, Rajeev Koodli
http://www.ietf.org/proceed= ings/09nov/slides/netext-11.ppt

?: What triggers the transaction?
RK: Trigger is still open.[Several people did not state names]
?2: Two LMA's are not talking= to each other, how's the authentication?
RK: If the LMAs trust each= other, even if not talking, authentication is ok.
Trust doesn't mean you have to talk. You don't want LMA <-= > LMA signaling.
What's is defined is MAG <-> MAG, wi= th some LMA interaction. What's
happening is dynamic delegatio= n with fine granularity.
BP: Cutting off discussion

8. draft-wu-netext-local-ro Qin Wu
http://www.ietf.org/proceedings/09nov/slides/netext-3.ppt
Mohana Jeyatharan: LMA needs to know where prefix is from
QW: Ok, we= 'll address this in next revision

9. draft-loureiro-netext-pmipv= 6-ro-01.txt
http://www.ietf.org/proceedings/09nov/slides/ne= text-4.ppt

BP: That concludes discussion on localized routing

10. New Propo= sals:

Multihoming extensions for Proxy Mobile IPv6 Carlos J. Bernard= os I-D:
draft-bernardos-mif-pmip-01.txt 5 mins

Hui Deng: Cl= arifications on weak/strong host models?
BP: Let's take this on mailing list

Service Flow Identifie= r in Proxy Mobile IPv6
Hui Deng - draft-hui-netext-service-flow-identifi= er-01.txt 5 Mins

HD: WG draft?
BP: We need to do the recha= rtering process, then we can consider
taking this on.

Bulk PBU using Bitmaps
Mohana J. - draft-je= yatharan-netext-pmip-bulkpbu-bitmap-00 5 Mins

MJ: Comments on = the way forward?
BP: We have adopted group ID approaches as WG items, fo= r these we need
to do more discussions on mailing lists.

Virtual interface for= supporting multihoming and inter technology
handover Tranh M. Tru= ng - draft-trung-netext-virtual-interface-01 5
Mins

S= ri: Can you statement the differences between this and other related
document(s)?
TMT: I try to limit the modifications to mobile node.=
Sri: If it's a simple change, does this require a new document? Bet= ter
work with existing ones
BP: Moving on

ITHO support i= n MN for PMIP6
Hidetoshi Y./Sri G. draft-yokota-netlmm-pmipv6-mn-itho-support-02.txt=

Reflector Extension for Route Optimization Agent Xiansong Cui
&n= bsp;draft-cui-netext-route-optimization-agent-ext-01.txt 5 Mins

CJB:= Why LMA, not MAG doing this? Some work done for RO in Nemo,
please take a look
BP: Need to shut down and conclude

BP: M= eeting adjourned, rest of the presentations not given due to lack
= of time.

Differentiated Services Support for Proxy Mobile IPv6 Behce= t S./Frank
Xia - draft-xia-netext-qos-00.txt

Gateway Initiated Dual-Stack= Lite Deployment Sri G.
draft-gundavelli-softwire-gateway-init-ds-= lite-00

PMIPv6 and Network Mobility Problem Statement Carlos CJ.
= draft-bernardos-netext-pmipv6-nemo-ps-00

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