RE: Merge 2 MPLS Network

>If they won't peer, and it's private L3VPN then there's not much you can do other than multi-home a site both to A and B and redistribute the routes between them.

I don't know 2 carriers I would trust well enough to do this for any serious company I have as a customer now, or worked at previously...

They have a hard enough time keeping our circuits up as it is...

As a managed service provider I can tell you the best option is "any option you can achieve without calling any carriers". So I would do the plug 2 MPLS carriers into a routing device and making sure routes are redistributed and you have "fully reachability" thing... That should be hard enough. You will need to slowly (or quickly) make sure subnets disappear on Vendor A, sites 2-999, and reappear for a while on Vendor A, Site 1 (site where A/B are redistributed)... you will then need to make sure those sites go to Vendor B site 2-999 (reverse what you did before).

Just do some basic algebra and try and figure out how you can pull this all off with the MINIMUM number of calls to either vendor...

That's my advice.

-Joe

-----Original Message-----
From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of Brian McGahan
Sent: Wednesday, March 27, 2013 8:48 PM
To: Cisco Fanatic; ccielab_at_groupstudy.com
Subject: RE: Merge 2 MPLS Network

Did you already ask the providers if they'll run Inter-AS MPLS for you? If they won't peer, and it's private L3VPN then there's not much you can do other than multi-home a site both to A and B and redistribute the routes between them. All inter-provider traffic is going to route through the multi-homed site though, which will likely be your bottleneck and could be a single point of failure. What's the current routing design look like?

Brian McGahan, CCIE #8593 (R&S/SP/Security), CCDE #2013::13 bmcgahan_at_INE.com

Internetwork Expert, Inc.
http://www.INE.com

-----Original Message-----
From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of Cisco Fanatic
Sent: Wednesday, March 27, 2013 6:04 PM
To: ccielab_at_groupstudy.com
Subject: Merge 2 MPLS Network

We currently have an MPLS network provided from vendor A and we are moving to an MPLS network provided by vendor B.
For next 3 months till all other sites get FOC dates we have to utilize MPLS network provided from vendor A. The only way around is to merge 2 networks and start routing traffic on MPLS network provided by vendor B, till all sites eventually are on vendor's B network.
How can one merge 2 MPLS network?
-yuri

Blogs and organic groups at http://www.ccie.net
Received on Thu Mar 28 2013 - 01:44:49 ART