[c-nsp] IOS-XR BGP RR MCID (Multiple Cluster ID)

[Mark Tinka]

On 12/Mar/18 19:20, adamv0025 at netconsultings.com wrote:

> With regards to ORR, are you using add-path already or RRs are doing
> all the path selection on behalf of clients please?
>

When Add-Paths (and Diverse-Paths) came out, we did some basic
benchmarking for re-route convergence performance in our network, and
did not see the benefit of increasing BGP state for a return in faster
re-routing, i.e., given our architecture, there was no actual value for
the cost of additional state. So no, we do not use Add-Paths or
Diverse-Paths.

Our focus has been on maintaining high-speed performance of the IGP as
the network scales, while abstracting BGP oscillations through stable
next-hops.

Mark.