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Question 440

Refer to the exhibit.

The BGP neighbor is not coming up. Which action resolves the issue?

Configure the ebgp-multihop 2 command on R1 toward the neighbor.

Configure a valid router ID on the neighbor that shows an invalid router ID of 0.0.0.0.

The route map on eBGP sessions must allow the prefixes from the neighbor.

Enable synchronization between the neighbors to bring the neighborship up.

Correct Answer: A

The issue here stems from the BGP neighbor relationship not forming. In the given configuration and exhibit, we can see that R1 defines a BGP neighbor with a remote AS of 100 and the update source as Loopback0. Since the update source is set to a loopback interface and the route to reach 192.168.200.6 is through 192.168.100.1, it implies multiple hops between the BGP peers. BGP by default only permits single-hop eBGP (external BGP) sessions. Therefore, configuring the 'ebgp-multihop 2' command on R1 would allow BGP to form a neighbor relationship even if the peers are more than one hop away. Hence, this action is required to resolve the issue.

Discussion

d740f62Option: A

A - 192.168.200.6 can be reached via 192.168.100.1, so at least 2 hops needed B - remote RID 0.0.0.0 just tells that there's no TCP connection, and it's given on the pic C - I don't see any route map here D - this has nothing to do w/ the no sync command

dapardoOption: A

Provide answer is correct

cloud29Option: A

Why its A? Anyone?

dapardo

R1 is part of a different AS number as R2. Considering that the 2 routers are not on the same AS the most logical solution is to enable the ebgp-multihop feature on the BGP configuration of R1.