July 2002
Intermediate to advanced
608 pages
14h 52m
English
Content preview from Traffic Engineering with MPLS
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Forwarding Traffic Down Tunnels with Policy-Based Routing
You can also use policy-based routing (PBR) to forward traffic down a tunnel. This is not a new feature; the capability to forward traffic down a particular interface has been in policy routing for a while.
Suppose that Src in Figure 5-1 has two types of traffic to send to Dst—voice traffic and data traffic. If you want to carry only voice traffic across Tunnel0, you can do so with PBR.
Figure 5-1. Example of PBR
PBR is enabled using policy route maps applied to the incoming interface. Under the route-map statement, simply match the voice traffic using the match statement and then use the ...
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