300-510 SPRI: Implementing Cisco Service Provider Advanced Routing SolutionsDemo

Question

Refer to the exhibit.

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Routers R1 and R2 are in AS 65530, which is multihomed to the Internet. A network engineer expects devices in the AS to use R2 for Internet access, but they are using R1 as the AS exit point. Which action resolves the problem?

A Add a sequence number to the route map to remove the implicit deny.
B Change the route map direction in the neighbor statement to out.
C Configure the route map with a local preference of 200 or higher.
D Remove the neighbor statements from the address family configuration and activate the neighbor globally on R1.

Explanation

AS-path prepending changes the AS-path attribute of routes advertised to an external BGP neighbor, causing external networks to regard that path as longer and favor an alternate path. The route map that performs set as-path prepend must therefore be applied in the outbound direction; an inbound route map modifies received routes instead.

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Cisco IOS BGP Configuration Guide — Connecting to a Service Provider Using External BGP

300-510 SPRI: Implementing Cisco Service Provider Advanced Routing SolutionsDemo

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