Re: [Nanog] Cogent Router dropping packets

[David Coulson <david () davidcoulson net>]

manolo wrote:
> Well it had sounded like I was in the minority and should keep my mouth 
> shut. But here goes. On several occasions the peer that would advertise 
> our routes would drop and with that the peer with the full bgp tables 
> would drop as well. 
That doesn't sound like the problem has anything to do with their 
multihop-eBGP configuration - It just appears that whatever you were 
directly connected to was flaking out. If they had moved you to a 
directly connected BGP session and it all worked, that would be one 
argument, but you also moved from a junky 3550 or something to the GSR 
in the process. I'd argue that if the switch could handle full tables 
and you just had a single session, you would probably have experienced 
the same issue.

I've ran with both direct and multihop with Cogent, and I honestly never 
noticed any difference in stability. I hear what you're saying, and I 
think you have a valid argument in some respects, but I just think the 
BGP problem is a symptom, not a cause.

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