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unequal load sharing when forwarding traffic down MPLS TE tunnels using PBR

  • From: "Palmer, Rob A" <Rob.Palmer@team.telstra.com>
  • Date: Thu, 26 Feb 2004 11:33:21 +1100
  • Resent-Date: Wed, 25 Feb 2004 20:10:27 -0500
  • Thread-Index: AcP8ACVnwQOHQgdQQzSvTjz5qGNkfg==
  • Thread-Topic: unequal load sharing when forwarding traffic down MPLS TE tunnels using PBR
  • To: <mpls-ops@mplsrc.com>
  • X-MIME-Autoconverted: from quoted-printable to 8bit by host.secure4-hosting.net id i1Q0XlJi015408

Hi 

I have a question regarding the use of policy based routing and MPLS TE in a Cisco environment.
The idea of using policy based routing to forward traffic down MPLS TE tunnels is highly appealing due to the flexibility this offers.
However it is not clear to me whether it also possible to have unequal load sharing between multiple tunnels between the same source and destination and use PBR to either directly, or indirectly, forward the traffic. 

Is it possible to achieve this end in the following fashion?

1. Create two tunnels (Tunnel0, Tunnel1) between router A and router B
2. Create two static routes at the headend router which forward traffic with router B ip address into the two tunnels eg
   ip route routerB_ip_address Tunnel0
   ip route routerB_ip_address Tunnel1
3. Use PBR to direct traffic matching the policy to routerB_ip_address
eg
route-map thataway
  match length 3 50
   set ip next-hop routerB_ip_address


thanks in advance for any feedback

Rob

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