[cisco-voip] Semi OT: VRF over a T1?

Nick Matthews matthnick at gmail.com
Thu Feb 26 20:44:10 EST 2009

I'm not sure if your trouble is more with the mechanics of delivering
the VRF or integrating the VRF with your voice once it has been
terminated, but we've just recently started supporting the 'voice
vrf'.  This is the global config command, and you're able to do CME,
and the gateway protocols using the VRF rather than the generic
routing table.  If this is not new information, please disregard.


On Thu, Feb 26, 2009 at 2:27 PM, Scott Voll <svoll.voip at gmail.com> wrote:
> OK.... I'm working out my new security model.
> I have VRF setup for my Voice networks which will come into my FWSM via a
> single interface to keep my voice off the Data networks etc.
> Now the only question I have is how do I get the Voice over a T1 into my VRF
> domain?  Please don't just respond with GRE or MPLS.  Can someone give me a
> link.  I'm mining through CCO for both GRE and MPLS and it's not quite what
> I'm lookiing for.  Topology is very easy:
> Voice networks -- VRF on 3550-12g -- VRF 6509 -- FWSM with VRF behind it.
> Pretty simple.
> Now add in the T1's comming off a Channelized ds3 on my 6509.  Topology
> looks like this:
> VRF -- 6509 (channelized DS3 ---- T1) 28xx router with both data and voice
> networks behind it.
> How do I get the voice traffic behind the 2800 ISR into the VRF on the 6509?
> If you have a config link or something a little more in depth..... That
> would be awsome.
> Thanks
> Scott
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