Implementing and Operating Cisco Service Provider Network Core Technologies (SPCOR) — Question 135

A network engineer is configuring RIP as the routing protocol between multiple PEs and CEs. The engineer must avoid advertising the same routes back to their sources. Which action should be performed on the routers to accomplish this task?

Answer options

• A. Define the site of origin on each interface.
• B. Configure a different route distinguisher for each prefix.
• C. Define VRFs on each device to separate the traffic.
• D. Enable bidirectional forwarding detection on each device.

Correct answer: A

Explanation

Defining the site of origin on each interface ensures that the routers do not send the routes back to their sources, effectively preventing route loops. The other options do not directly address route advertisement behavior and instead focus on traffic separation or detection mechanisms, which do not solve the issue at hand.