MPLS VPN design - RR in forwarding path?

Fri Jan 2 18:22:17 UTC 2015

On Thursday, January 01, 2015 11:25:24 PM Tony Varriale 
wrote:

> Most vendors today have the performance numbers
> (sometimes they aren't published publically) for routers
> acting as RRs.  Ask your vendor and pick one that suits
> you.  We generally buy the middle or most memory and
> pick a reasonable processor.  And, then we monitor :)

With the major vendors now offering VM-based RR's, I'd 
discourage using routers as RR's just for pure long-term 
scale.

> As for peer groups, you should have a design that allows
> you to herd most of the config snips together.  Use the
> features that make your life easier and allow you to
> simplify your routing policies.

Suffice it to say that the Peer Group functionality in IOS 
and IOS XE has largely been replaced by Update Groups. We 
use peer and session templates, but really, as with Peer 
Groups in 2015, it's just to keep things neat and tidy.

Junos, of course, has its way forever which still works 
nicely.

Mark.
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