What two statements are correct in this scenario?

You are a network operator who wants to add a second ISP connection and remove the default route to the existing ISP You decide to deploy the BGP protocol in the network.

What two statements are correct in this scenario? (Choose two.)
A . IBGP updates the next-hop attribute to ensure reachability within an AS.
B . IBGP peers advertise routes received from EBGP peers to other IBGP peers.
C . IBGP peers advertise routes received from IBGP peers to other IBGP peers.
D . EBGP peers advertise routes received from IBGP peers to other EBGP peers.

View Answer

Answer: BC

Explanation:

In this scenario where you are a network operator wanting to add a second ISP connection and remove the default route to the existing ISP and decide to deploy the BGP protocol in the network, the correct two statements are:

IBGP peers advertise routes received from EBGP peers to other IBGP peers.

This is correct. Inside an Autonomous System (AS), IBGP peers will advertise routes learned from EBGP peers to other IBGP peers to ensure that all routers within the AS have information about external destinations.

IBGP peers advertise routes received from IBGP peers to other IBGP peers.

This is typically incorrect. Within IBGP, route information is not passed from one IBGP peer to another by default, to prevent routing information loops within an AS, unless route reflectors are configured or there is a full mesh IBGP setup.