[c-nsp] partial prefix load in ibgp

[Nikolay Shopik]

On 26/10/11 13:28, Gert Doering wrote:
> This is a FAQ... BGP only forward-announces the best prefix it knows.
>
> So if you have:
>
> ExtA - Ra - Rb - Extb
>
> and "Ra" thinks that 150k prefixes are "best via Rb/ExtB", then it will only
> announce the rest (190k via ExtA) to Rb.
>
> Prefixes preferred over Rb will never be announced back to Rb, and since
> BGP will only ever announce the*best*  path, you'll see less-than-full
> tables on Rb.

Thanks, that make sense. I'm just having some routing issues with some 
ASes after installing second border. And though maybe this is related.