[c-nsp] BGP-ORR vRR/IOS-XRv

[Mark Tinka]

On 18/Mar/18 22:20, Curtis Piehler wrote:

> BGP-ORR looks to be an attractive technology to utilize instead of full
> meshing many standard RRs.  I was hoping people could share some insight on
> this topic since there is not so much real world scenarios out there
> documented.  This is geared towards an IOS-XRv ASR9K deployment.

I have no ORR experience yet since it's not yet supported in CSR1000v.
However, I don't think ORR creates an opportunity not to fully mesh RR's.

The idea around ORR is to allow RR clients to enjoy a "localized" view
of the route (IGP metric, to be exact) despite where the RR they have an
iBGP session with is physically located. This does not negate the need
to fully mesh the RR's.

Mark.