bird version 2.0.4 - peering with cisco version ios xe 16.3.5 - invalid open message

[Ondrej Zajicek]

On Fri, Mar 08, 2019 at 04:09:58PM +0100, Marco van Tol wrote:
> Op 8 mrt. 2019, om 14:45 heeft Ondrej Zajicek <santiago at crfreenet.org> het volgende geschreven:
> > On Fri, Mar 08, 2019 at 01:51:31PM +0100, Marco van Tol wrote:
> >> Hi,
> >> 
> >> So I replaced bird 2.0.4 for which I downloaded the rpm from your site with bird 2.0.2 which I installed using yum on a centos 7 system.
> >> 
> >> I noticed 2 things:
> >> - The Centos 7 2.0.2 rpm makes the bird daemon drop privileges and resumes as user bird
> >> - The 2.0.4 package from your site, when started with the supplied .service file, remains as root, with the exact same bird.conf
> > 
> > Hi
> > 
> > That is defined by cmdline options, so they are probably missing in the .service file.
> 
> Ah right, okay thanks.
> 
> >> - Version 2.0.2 has no issues to peer with the cisco router, it peers fine.
> >> 
> >> So now I'm curious how worried I should be about the "import bgp fixes" in the 2.0.4 release notes. :-)
> > 
> > That is unlikely as that does not change OPEN message.
> > 
> > Could you try 2.0.4 with 'long lived graceful restart off;' option?
> 
> Hi,
> 
> This fixed it.  I added this option only to the cisco neighbors which made them accept peering.
> 
> Much appreciated, and let me know when you need more information from me.

Hi

What version of Cisco is that?

Could you try if you get the same result with 1.6.6?

Could you save the failed session initiation attempt by tcpdump?
(e.g. tcpdump -s 0 -w file.pcap ...)

-- 
Elen sila lumenn' omentielvo

Ondrej 'Santiago' Zajicek (email: santiago at crfreenet.org)
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"To err is human -- to blame it on a computer is even more so."