RE: VRF lite with BGP

From: Shaughn Smith (Shaughn.Smith@mtnbusiness.co.za)
Date: Fri Mar 06 2009 - 13:12:16 ARST


Couldn't you just run a VPNV4 global session between RA and RB for the routes.

You would then import/export the relevant RT's in the different VRF's ? or am I missing something here.

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of Rick Mur
Sent: Friday, March 06, 2009 1:51 PM
To: Yusuf, Daniel (NSN - MA/Rabat)
Cc: ccielab@groupstudy.com
Subject: Re: VRF lite with BGP

Since you are using VRF-lite, you really have 3 separate 'routers' on RA and
RB, so yes you need 3 iBGP sessions between them to have connectivity within
the VRF

Rick Mur
CCIE #21946 (R&S)
CCNP, CCIP, JNCIA-ER, MCSE
rick@rickmur.com

On Fri, 6 Mar 2009 13:17:33 +0100
  "Yusuf, Daniel (NSN - MA/Rabat)" <daniel.yusuf@nsn.com> wrote:
  Experts,

  Need your advise,

  I am running VRF lite on a pair of CE (RA and RB) and connected to
a
  pair of PE ( RC and RD) using EBGP, currently I have 3 VRFs

    RA---------------------------RC
    |
    |
    |
   RB----------------------------RD

  The question is, should I create 3 IBGP session between RA and RB
hence-
  1 session each in address family ipv4 vrf config... or it just need 1
  IBGP session between RA and RB.

 From my understanding is, as there are 3 VPN logically separated, then
  there should be 3 IBGP session. Or both are viable ? Advantages ?
  Disadvantages?

  Thanks

  -daniel

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