Implementing Cisco Application Centric Infrastructure (DCACI) — Question 101

An engineer must configure an L3Out to advertise a single summarized address for all Cisco ACI host routes. The summarized address must be advertised to the core switches that are physically attached to the ACI fabric. An external EPG is created with the required subnet. Which configuration set advertises the subnet to the remote peer?

Answer options

• A. Set the external EPG subnet scope to Export Route Control Subnet. Associate a route control profile.
• B. Set the external EPG subnet scope to Export Route Control Subnet. Associate a route summarization policy.
• C. Set the external EPG subnet scope to Import Route Control Subnet. Associate a route summarization policy.
• D. Set the external EPG subnet scope to Import Route Control Subnet. Associate a route control profile.

Correct answer: B

Explanation

The correct answer is B because setting the external EPG subnet scope to Export Route Control Subnet and associating it with a route summarization policy is the method to advertise the summarized address. Options A and D incorrectly suggest using a route control profile instead of a summarization policy, while option C uses the wrong scope (Import) which does not facilitate advertising to remote peers.