In this scenario, which two steps would you take to summarize the route in BGP?

Exhibit

You are attempting to summarize routes from the 203.0.113.128/25 IP block on R8 to AS 64500. You implement the export policy shown in the exhibit and all routes from the routing table stop being advertised.

In this scenario, which two steps would you take to summarize the route in BGP? (Choose two.)
A . Remove the from protocol bgp command from the export policy.
B . Add the set protocols bgp family inet unicast add-path command to allow additional routes to the RIB tables.
C . Add the set routing-options static route 203.0.113.123/25 discard command.
D . Replace exact in the export policy with orlonger.

View Answer

Answer: C,D

Explanation:

To summarize routes from the 203.0.113.128/25 IP block on R8 to AS 64500, you need to do the following:

✑ Add the set routing-options static route 203.0.113.128/25 discard command. This creates a static route for the summary prefix and discards any traffic destined to it. This is necessary because BGP can only advertise routes that are present in the routing table.

✑ Replace exact in the export policy with orlonger. This allows R8 to match and advertise any route that is equal or more specific than the summary prefix. The exact term only matches routes that are exactly equal to the summary prefix, which is not present in the routing table.