cogent update suppression, and routing loops

Fri Oct 3 17:56:22 UTC 2014

On Thu, Oct 02, 2014 at 09:03:15AM -0700, ryanL wrote:
> (who peers with cogent), and then pull the /24 some time later, that cogent
> holds onto the /24 and then bounces packets around in their network a bunch
> of times for upwards of 8-10 minutes until they finally yank it. this
> effectively blackholes traffic to my /24 for anyone that is using a path
> thru cogent.

Maybe running into some non-standard BGP Advertisement intervals inside
Cogent's network?  Might be running a lot of sub-ASes inside the
confederation, and having to wait multiple advertisement intervals for full
propagation.

https://routingfreak.wordpress.com/tag/minimum-route-advertisement-interval/

-- 
Brandon Ewing                                     (nicotine at warningg.com)
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