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Re: GBLX router upgrade breaks bgp sessions

  • From: bdragon
  • Date: Tue Aug 06 15:13:34 2002

<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?





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