From: john matijevic (matijevi@bellsouth.net)
Date: Mon Jul 19 2004 - 22:44:18 GMT-3
Hello Shahid,
Im sorry we didn't get a chance to meet at networkers. Anyways I found
the following link that might help you. It looks like you can use VRF
with policy routing.
"VRF Selection using Policy Based Routing
The VRF Selection using Policy Based Routing feature is an extension of
the VRF Selection Based on Source IP Address feature. The PBR
implementation of the VRF selection feature allows you to policy route
VPN traffic based on match criteria. Match criteria is defined in a
prefix list, in an IP access list, or based on packet length. The
following match criteria is supported in Cisco IOS software:
.IP Access Lists- define match criteria based on IP addresses, IP
address ranges, and other IP packet access list filtering options.
Named, numbered, standard, and extended access lists are supported. All
IP access list configuration options in Cisco IOS software can be used
to define match criteria.
.IP Prefix Lists-define match criteria based on only IP prefixes and IP
prefix ranges.
.Packet Lengths- define match criteria based on the length of a packet
in bytes. The packet length filter is defined in a route map with the
match length route map configuration command.
Policy routing is defined in the route map. The route map is applied to
the incoming interface with the ip policy route-map interface
configuration command. IP access list and IP prefix list match criteria
is applied to the route map with the match ip address route map
configuration command. Packet length match criteria is applied to the
route map with the match length route map configuration command. The set
action is defined with the set vrf route map configuration command. The
match criteria is evaluated, and the appropriate VRF is selected by the
set clause. This combination allows you to define match criteria for
incoming VPN traffic and policy route VPN packets out to the appropriate
VRF.
Hopefully that helps clear things up for you.
John Matijevic, CCIE #13254, MCSE, CNE, CCEA
Network Consultant
Hablo Espanol
305-321-6232
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Shahid Shafi
Sent: Monday, July 19, 2004 9:24 PM
To: ccielab@groupstudy.com
Subject: VRF and PBR (Something from Networkers 2004)
Hi Folks,
I hope someone will able to answer me here. I attended networkers this
year and one thing that kept coming up like in couple of my sessions
but I never got a chance to clear that with the speaker(s). They were
using VRF and PBR interchangeably for any intelligent routing. I
always thought VRF is strictly related to L3/L2 MPLS based VPN and has
nothing to do with campus routing. Can anybody know or elaborate how
one can leverage VRF in an enterprise environment like PBR? Any links
from cco will be appreciated.
Thx,
Shahid
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