[c-nsp] Change VRF RD

[Robert Crowe (rocrowe)]

The main benefit of having a different RD per VRF per PE is for IBGP multipath in the core. If you don't need or ever foresee using/benefiting from multipath, then you can use the same RD for a given VRF on all PE's.

Thanks,


Solutions Architect
SP Mobility Advanced Services
CCIE R&S

Cisco Systems, Inc.
Office: 919-392-1574  Mobile: 919-323-9972
Pager: 800-365-4578  Fax: 919-287-2664
Email: rocrowe at cisco.com
 


-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Tony
Sent: September 08, 2009 7:06 PM
To: cisco-nsp at puck.nether.net; Phil Mayers
Subject: Re: [c-nsp] Change VRF RD

Hi,

--- On Tue, 8/9/09, Phil Mayers <p.mayers at imperial.ac.uk> wrote:

> When we deployed our MPLS core, we made the minor mistake of setting 
> the RD the same on every router.
> 

I'm curious, I thought setting the RD the same on each PE router (obviously per VPN) was the way to do things ?

Most of the stuff I've seen shows it done this way, eg.

http://www.cisco.com/en/US/tech/tk436/tk428/technologies_configuration_example09186a00800a6c11.shtml

http://www.cisco.com/en/US/tech/tk436/tk428/technologies_configuration_example09186a008009445c.shtml

http://wiki.nil.com/wk/images/b/b1/MPLS_VPN_cheatsheet.pdf


When do/should you set the RD to be different ? I'm guessing it's going to be for larger installations and to allow more customisation or something ?

Happy to do some reading and educate myself if people can point me towards the correct material.


Thanks very much,
Tony.

(apologies for hijacking the thread)


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