[117449] in North American Network Operators' Group
Re: Dedicated Route Reflectors
daemon@ATHENA.MIT.EDU (Truman Boyes)
Sun Sep 13 20:41:48 2009
From: Truman Boyes <truman@suspicious.org>
In-Reply-To: <342977.61377.qm@web53611.mail.re2.yahoo.com>
Date: Mon, 14 Sep 2009 10:40:45 +1000
To: Serge Vautour <serge@nbnet.nb.ca>
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
Hi,
I have seen networks use the control plane of large P routers to
reflect their inet-vpn routes. Keep in mind that when reflecting inet-
vpn routes, the next-hops need to be "reachable". So quite possibly
you will need some policy to resolve the MPLS next-hops.
Internet / VPN / and now IPv6 peers have different growth rates, so
you may benefit in having different "types of route reflectors" for
different address families.
In a small PE deployment (say, 5-50) PE nodes, you can deploy the
route reflection on your P routers. Create some redundancy, and have
your PE nodes peer with 2-3 of them. It keeps the configuration much
smaller that having to define all the neighbours in a full mesh.
When you have lots of routes and PEs, you can start to have dedicated
RRs for different address families.
Truman
On 12/09/2009, at 1:30 AM, Serge Vautour wrote:
> Hello,
>
> We're in the process of planning for an MPLS network that will use
> BGP for signaling between PEs. This will be a BGP free Core (i.e. no
> BGP on the P routers). What are folks doing for iBGP in this case?
> Full Mesh? Full Mesh the Main POP PEs and Route Reflect to some
> outlining PEs? Are folks using dedicated/centralized Route
> Reflectors (redundant of course)? What about using some of the P
> routers as the Centralized Route Reflectors? The boxes aren't doing
> much from a Control Plane perspective, why not use them as Route
> Reflectors.
>
> Any comments would be appreciated.
>
> Thanks,
> Serge
>
>
>
>
> __________________________________________________________________
> Looking for the perfect gift? Give the gift of Flickr!
>
> http://www.flickr.com/gift/
>
