Control Policy Example 2: Implementing Traffic Engineering

Control Policy Example 2: Implementing Traffic Engineering

• Problem: Prefer the main data center over the disaster recovery data center. If the main data center fails, traffic should reroute to the DR DC.

• Solution: Deploy a control policy to influence TLOC priority.

In the example shown in the figure, the goal is to prefer one data center over another. From a routing perspective, a data center is behind one or more TLOCs. The TLOC is the system IP address of the corresponding WAN Edge, plus a color that defines the interface to use. (For simplicity, some details are omitted.)

To prioritize one data center over another, you must give the corresponding TLOCs a higher preference.