[50643] in North American Network Operators' Group
Re: GBLX router upgrade breaks bgp sessions
daemon@ATHENA.MIT.EDU (bdragon@gweep.net)
Tue Aug 6 15:11:46 2002
To: jaitken@aitken.com (Jeff Aitken)
Date: Tue, 6 Aug 2002 15:11:21 -0400 (EDT)
Cc: nanog@merit.edu
In-Reply-To: <20020710145612.GA15444@hawk.aitken.com> from "Jeff Aitken" at Jul 10, 2002 10:56:12 AM
From: <bdragon@gweep.net>
Errors-To: owner-nanog-outgoing@merit.edu
<snip>
> This sounds an awful lot like a problem we saw awhile back when
> upgrading from JUNOS 4.x to 5.x. At some point (I don't remember
> exactly when, but the details should be in the case notes of
> PR.19592) Juniper implemented a change that which makes their box
> compliant with RFC 2858. However, when speaking BGP with a
> non-RFC-compliant box (such as a Cisco running something like
> 12.0(15)S) the session flaps continuously in the manner you
> describe because the other box expects the NEXT_HOP attribute to
> be present in every update message.
> attribute in an UPDATE message if only the MP_REACH_NLRI attribute is
> present. A workaround is to only use family inet unicast instead of
> multicast or any on all BGP sessions to those cisco routers or upgrade
> all of the cisco routers."
<snip>
Anyone have a Cisco BugID for this?
