From: Josh Ferguson (josfergu) (josfergu@cisco.com)
Date: Wed Feb 06 2008 - 19:03:09 ARST
So there are two ways to utilize this...
1) VRF-Lite or CE-Lite, this allows you to create multiple logically
separated routing instances on a router, however it is not full blown
MPLS because those routing instances are local to that box only and no
information about those VRF's is distributed to any other neighbor. To
do this you simply create the VRF (ip vrf xxx) in the global config mode
and then apply the ip vrf forwarding command to the interface. To route
with this you will need to use address-familes, one per vrf, in your
routing protocol.
2) Run MPLS L3VPN, this allows the VRF information primarily the BGP
Route Descriptors (communities) to be shared across multiple routers.
This usually involves;
1) configuring an IGP
2) configure mpls tagging on the interfaces
3) configuring iBGP between your PE's, you have to
configure the VPNv4 address family
4) configure the VRF on a PE, once this is configured if
you go to any other iBGP peer and do a "sh ip bgp vpnv4 all" you will
see that the VRF's or RD's are propagated via BGP.
Hope this helps....
--Josh
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-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
ccie-lab
Sent: Tuesday, February 05, 2008 6:55 PM
To: ccielab@groupstudy.com
Subject: IP Vrf
Does anyone have a good explanation or link to describe ip vrf
forwarding.
I am trying to provide new customer transports through my company ip
network
running ospf.
Can i utlize ip vrf to separate their routing instances or do I need
mpls.
Tx
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