BGP multihoming question.

Fri Dec 10 15:08:14 UTC 2010

On 12/10/2010 10:01 AM, Dylan Ebner wrote:
> 3. You cannot trust the second isp to advertise the SWIP block correctly if they are not a tier 1. Even though they may advertise it for you to their upstream, they don't always have the appropriate procedures in place to get the LOAs to the upstream so your block just gets filtered out.
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Just got done battling this exact issue with one of our upstream 
peers...caused a lot of headaches for us.