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Re: [Idr] WG Last Call foir draft-ietf-idr-bgp-extended-messages (11/12 to 11/26)

Robert Raszuk <robert@raszuk.net> Wed, 15 November 2017 13:56 UTC

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From: Robert Raszuk <robert@raszuk.net>
Date: Wed, 15 Nov 2017 14:56:01 +0100
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To: Susan Hares <shares@ndzh.com>
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Subject: Re: [Idr] WG Last Call foir draft-ietf-idr-bgp-extended-messages (11/12 to 11/26)
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Hi,

I am concerned with the lack of clear description of what router which
supports extended msg should do
when on one side he receives an attribute bigger then 4K and not of all
it's peers can handle it.

IMO the below statement is true but a bit too vague:

"Therefore putting an attribute which can not be decomposed to 4096 octets
or less in an

   Extended Message is a likely path to routing failure.
​"


​And the worst part is that the BGP speaker which in fact generated
such attribute ​

be it on purpose or by error will not find out that its propagation has

failed one or N hops away.


​Today when one is trying to inject msg over 4K (say due to a bug) it
will fail locally,

generate syslog etc ... ​


Any comments from authors and WG on that ?


Thx,

R.





​


On Sun, Nov 12, 2017 at 11:47 PM, Susan Hares <shares@ndzh.com> wrote:

> This begins a 2 week WG LC for draft-ietf-idr-bgp-extended-messages
> (11/12 to 11/26).  Please note this draft has at least 2 implementations.
>    Please comment on whether you feel this draft is ready for
> publication.
>
>
>
> Susan Hares
>
>
>
> PS – the request for this WG LC is at:
>
> https://www.ietf.org/mail-archive/web/idr/current/msg18801.html
>
>
>
>
>
>
>
>
>
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