Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-03.txt

"John G. Scudder" <jgs@juniper.net> Mon, 03 July 2017 16:04 UTC

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From: "John G. Scudder" <jgs@juniper.net>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/idr/iF3-VmFHLjU4b4HUKebE4lZWQaU>
Subject: Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-03.txt
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Hi All,

This is a significant rewrite from the previous version. Most of the changes are refactoring for clarity and readability, but their extent and volume means rfcdiff isn't so helpful; sorry about that.

There is one substantive change worth calling out: the previous version used a plain IPv4/IPv6 NLRI format, and communicated the reachability state of tracked next hops using an extended community. The new version uses its own NLRI format, and embeds reachability state in the NLRI. In other respects, the intent is that the specified behavior is the same as the previous version.

Thanks and (to those in the U.S. and elsewhere who celebrate it) have a good holiday.

Regards,

--John

> On Jul 3, 2017, at 11:56 AM, internet-drafts@ietf.org wrote:
> 
> 
> A New Internet-Draft is available from the on-line Internet-Drafts directories.
> This draft is a work item of the Inter-Domain Routing of the IETF.
> 
>        Title           : Making Route Servers Aware of Data Link Failures at IXPs
>        Authors         : Randy Bush
>                          Jeffrey Haas
>                          John G. Scudder
>                          Arnold Nipper
>                          Thomas King
> 	Filename        : draft-ietf-idr-rs-bfd-03.txt
> 	Pages           : 12
> 	Date            : 2017-07-03
> 
> Abstract:
>   When BGP route servers are used, the data plane is not congruent with
>   the control plane.  Therefore, peers at an Internet exchange can lose
>   data connectivity without the control plane being aware of it, and
>   packets are lost.  This document proposes the use of a newly defined
>   BGP Subsequent Address Family Identifier (SAFI) both to allow the
>   route server to request its clients use BFD to track data plane
>   connectivity to their peers' addresses, and for the clients to signal
>   that connectivity state back to the route server.
> 
> 
> 
> The IETF datatracker status page for this draft is:
> https://datatracker.ietf.org/doc/draft-ietf-idr-rs-bfd/
> 
> There are also htmlized versions available at:
> https://tools.ietf.org/html/draft-ietf-idr-rs-bfd-03
> https://datatracker.ietf.org/doc/html/draft-ietf-idr-rs-bfd-03
> 
> A diff from the previous version is available at:
> https://www.ietf.org/rfcdiff?url2=draft-ietf-idr-rs-bfd-03
> 
> 
> Please note that it may take a couple of minutes from the time of submission
> until the htmlized version and diff are available at tools.ietf.org.
> 
> Internet-Drafts are also available by anonymous FTP at:
> ftp://ftp.ietf.org/internet-drafts/
> 
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