The MPLS-OPS Archive

["M. ELK" <elkou141061@hotmail.com>]

Rob

I am not trying to answer specifically as have no sufficient hand-on ,but 
just to understand
the pblm :

1- Are U trying to achive un-equal load balancing by configuring different 
B.W reservation
    of Tun0 and Tun1 . exampple Tun0 2M , Tun1 3 M so approximately  2/3 of 
traffic wil go to
   Tun0 and approx.  3/5 will go to Tun1 .
   my guess that CSCO box will do this .

2- If the box will not load share the  traffic relative to the B.W of tunnel 
.
    Config extra Tunel : Say Tun0 2m ,Tun1  2m ,Tun2 3m
    Tun1 path need to be the same as Tun2 (identical include or excldude 
statement) so
   along the path just 3M will be reserved by RSVP ie: no double counting 
(SE style) .

    >    ip route routerB_ip_address Tunnel0
    >    ip route routerB_ip_address Tunnel1
    >    ip route routerB_ip_address Tunnel2

    the box will load share equaly between the 3 Tun which result in 2/3 of 
traffic on certain
    path along the netw (path taken by Tun1 and Tun2) and 1/3 over another 
path (path taken
   by Tun0 ) .

Brgds
>From: "Palmer, Rob A" <Rob.Palmer@team.telstra.com>
>To: <mpls-ops@mplsrc.com>
>Subject: [MPLS-OPS]: unequal load sharing when forwarding traffic down MPLS 
>TE tunnels using PBR
>Date: Thu, 26 Feb 2004 11:33:21 +1100
>
>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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