Which action will influence BGP route selection within your AS?

Which action will influence BGP route selection within your AS?
A . reducing number of hops in the network
B . changing the default value of the local preference
C . changing the default link metric
D . changing the administrative distance for eBGP

View Answer

Answer: B

Explanation:

The action that will influence BGP route selection within your AS is changing the default value of the local preference attribute. The local preference attribute is used to indicate the preference of a path among multiple paths learned from different external BGP neighbors or autonomous systems (ASes). The higher the local preference value, the more preferred the path is within your AS, and vice versa. The default value of local preference is 100, but you can change it using route maps or other configuration methods on your BGP routers.

Reference: Ericsson IP Networking – Routing Protocols, BGP Attributes and Path Selection, BGP Local Preference Attribute: Controlling Traffic Like a Pro