Discuss Ericsson ECP-206 Exam Topic 5 Question 53

Which action will influence BGP route selection within your AS?

Areducing number of hops in the network

Bchanging the default value of the local preference

Cchanging the default link metric

Dchanging the administrative distance for eBGP

Suggested Answer: B

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

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12 comments · newest first

Katy 3 months ago

I prefer A. Reducing hops seems more straightforward for efficiency.

Linwood 3 months ago

Agreed! Changing local preference can prioritize routes effectively.

Reena 3 months ago

I think B is the best choice. Local preference really impacts route selection.

Carman 3 months ago

Wait, changing local preference really affects route selection?

Eun 3 months ago

I agree with B), but D) eBGP distance seems less impactful.

Lanie 4 months ago

Not sure about C) link metric affecting BGP.

Kirby 5 months ago

I think A) reducing hops is also important though.

Cassie 5 months ago

Definitely B) local preference! That's a big one.

Ayesha 6 months ago

I’m a bit confused about administrative distance for eBGP. I know it affects route selection, but I’m not sure if it’s the most influential factor in this case.

Barabara 6 months ago

Reducing hops sounds like it would help, but I don't think that's how BGP actually decides routes. It seems more about attributes like local preference.

Sharika 6 months ago

I remember practicing a question similar to this where local preference was the key to influencing route selection. I feel like that's the right answer here.

Annice 6 months ago

I think changing the local preference is definitely a factor in BGP route selection, but I'm not entirely sure how it compares to the other options.

Ericsson ECP-206 Exam - Topic 5 Question 53 Discussion