On 12/31/14 4:08 AM, Marcin Kurek wrote:
Hi everyone,
I'm reading Randy's Zhang BGP Design and Implementation and I found following guidelines about designing RR-based MPLS VPN architecture: - Partition RRs - Move RRs out of the forwarding path I'd find it odd if the RR were the nexthop for any signficant traffic, in recent deployments I've done there's no fib to speak of excepting igp routes installed on the RR itself. - Use a high-end processor with maximum memory bgp addpath kicked up the memory requirements of the RR considerably when we deployed it. - Use peer groups - Tune RR routers for improved performance.
Since the book is a bit outdated (2004) I'm curious if these rules still apply to modern SP networks. What would be the reasoning behind keeping RRs out of the forwarding path? Is it only a matter of performance and stability?
Thanks, Marcin