Subject: Fwd: I-D Action: draft-mmm-bfd-on-lags-07.txt

From: Marc Binderberger <[email-masked]>
Date: Tue, 16 Apr 2013 16:27:28 +0200

Hello BFD experts,

FYI, we have updated the draft draft-mmm-bfd-on-lags to version 7. The changes are:

* replace the "to-be-assigned" text parts with the UDP port and Ethernet MAC meanwhile assigned by IANA.

* section 2.3, the use of the MAC learned from peer packets is now optional, i.e. MAY, instead of being a SHOULD. This keeps the basic protocol simple (no MAC change, always using the dedicated MAC), a lesson we learned from interoperability testing being done.

* section 3.1, we have added the "standby" in addition to "distributed" as another port state that triggers the start/removal of the BFD session. This keeps the overall logic simpler in case of active/standby scenarios.

As always, comments are welcome :-)

Thanks & Regards,
Marc

Begin forwarded message:

> From: [email-masked]
> Date: April 13, 2013 1:42:03 GMT+02:00
> To: [email-masked]
> Subject: I-D Action: draft-mmm-bfd-on-lags-07.txt
> Reply-To: [email-masked]
> 
> 
> A New Internet-Draft is available from the on-line Internet-Drafts directories.
> 
> 
> 	Title           : Bidirectional Forwarding Detection (BFD) on Link Aggregation Group (LAG) Interfaces
> 	Author(s)       : Manav Bhatia
>                          Mach(Guoyi) Chen
>                          Sami Boutros
>                          Marc Binderberger
>                          Jeffrey Haas
> 	Filename        : draft-mmm-bfd-on-lags-07.txt
> 	Pages           : 11
> 	Date            : 2013-04-12
> 
> Abstract:
>   This document proposes a mechanism to run BFD on Link Aggregation
>   Group (LAG) interfaces.  It does so by running an independent
>   Asynchronous mode BFD session on every LAG member link.
> 
>   This mechanism allows the verification of member link continuity,
>   either in combination with, or in absence of, LACP.  It provides a
>   shorter detection time than what LACP offers.  The continuity check
>   can also cover elements of layer 3 bidirectional forwarding.
> 
>   This mechanism utilizes a well-known UDP port distinct from that of
>   single-hop BFD over IP.  This new UDP port removes the ambiguity of
>   BFD over LAG packets from BFD over single-hop IP.
> 
> 
> 
> The IETF datatracker status page for this draft is:
> https://datatracker.ietf.org/doc/draft-mmm-bfd-on-lags
> 
> There's also a htmlized version available at:
> http://tools.ietf.org/html/draft-mmm-bfd-on-lags-07
> 
> A diff from the previous version is available at:
> http://www.ietf.org/rfcdiff?url2=draft-mmm-bfd-on-lags-07
> 
> 
> Internet-Drafts are also available by anonymous FTP at:
> ftp://ftp.ietf.org/internet-drafts/
> 
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