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Example: Configuring CoS-Based Forwarding

 

Router A has two routes to destination 10.255.71.208 on Router D. One route goes through Router B, and the other goes through Router C, as shown in Figure 1.

Configure Router A with CoS-based forwarding (CBF) to select Router B for queue 0 and queue 2, and Router C for queue 1 and queue 3.

Figure 1: Sample CoS-Based Forwarding
Sample CoS-Based Forwarding

When you configure CBF with OSPF as the IGP, you must specify the next hop as an interface name, not as an IPv4 or IPv6 address. The next hops in this example are specified as ge-2/0/0.0 and so-0/3/0.0.