Which configuration establishes EBGP neighborship between these two directly connected neighbors and exchanges the loopback network of the two routers through BGP?

Refer to the exhibit.

Which configuration establishes EBGP neighborship between these two directly connected neighbors and exchanges the loopback network of the two routers through BGP?
A . R1(config)#router bgp 1
R1(config-router)#neighbor 192.168.10.2 remote-as 2
R1(config-router)#network 10.1.1.0 mask 255.255.255.0
R2(config)#router bgp 2
R2(config-router)#neighbor 192.168.10.1 remote-as 1
R2(config-router)#network 10.2.2.0 mask 255.255.255.0
B . R1(config)#router bgp 1
R1(config-router)#neighbor 10.2.2.2 remote-as 2
R1(config-router)#network 10.1.1.0 mask 255.255.255.0
R2(config)#router bgp 2
R2(config-router)#neighbor 10.1.1.1 remote-as 1
R2(config-router)#network 10.2.2.0 mask 255.255.255.0
C . R1(config)#router bgp 1
R1(config-router)#neighbor 192.168.10.2 remote-as 2
R1(config-router)#network 10.0.0.0 mask 255.0.0.0
R2(config)#router bgp 2
R2(config-router)#neighbor 192.168.10.1 remote-as 1
R2(config-router)#network 10.0.0.0 mask 255.0.0.0
D . R1(config)#router bgp 1
R1(config-router)#neighbor 10.2.2.2 remote-as 2
R1(config-router)#neighbor 10.2.2.2 update-source |o0
R1(config-router)#network 10.1.1.0 mask 255.255.255.0
R2(config)#router bgp 2
R2(config-router)#neighbor 10.1.1.1 remote-as 1
R2(config-router)#neighbor 10.1.1.1 update-source |o0
R2(config-router)#network 10.2.2.0 mask 255.255.255.0

View Answer

Answer: D

Explanation:

The configuration in the image establishes an EBGP neighborship between two directly connected neighbors and exchanges the loopback network of the two routers through BGP. In this configuration, both routers R1 and R2 are configured with router bgp followed by their respective AS numbers.

The neighbor command is used to establish a BGP session, with the remote-as option specifying the AS number of the neighboring router. The update-source lo0 command ensures that BGP messages are exchanged using the IP address of Loopback0 interface, facilitating EBGP multihop if necessary. Finally, the network command advertises each router’s loopback network into BGP.

References: = Implementing and Operating Cisco Service Provider Network Core Technologies (SPCOR v1.1) – Module: Border Gateway Protocol