Click the Exhibit button.
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.)
To summarize routes in BGP and resolve the issue of routes not being advertised, two steps should be taken: Firstly, replacing 'exact' in the export policy with 'orlonger' will allow the more specific /28 prefixes to be included in the summary route 203.0.113.128/25. This ensures the summarized route is correctly advertised without losing the more specific routes. Secondly, adding the 'set routing-options aggregate route 203.0.113.128/25' command will create an aggregate route, combining the more specific routes into a single summarized route. These two steps together will ensure that the routes are appropriately summarized and advertised in BGP.
You need to summarize routes so you need to use aggregate. Answer BD
B,D correct. A - is wrong because if "orlonger" is used, then all /28 prefixes are advertised, hence no summarization happening
AC, because the routes in the routing table are /28, hence it should be /25 or longer not /25 exact. Hence A is valid. All the routes in the routing table are BGP learnt routes, so no need to remove the BGP command from the export policy, as it will not make a difference. Since we want to summarise routes into a /25, we have to use the aggregate route, hence D is a valid answer.
Correct A,D