Config Register is 0x4a6f6469

Topologi BGP -02 sangat similar dengan topologi BGP -01. Namun tujuan yang ingin dicapai pada topologi BGP - 02 adalah mengkonfigurasi Routing BGP dengan menggunakan interface loopback sebagai neighbor. Gambar topologi dapat dilihat di bawah,

R1#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
R1(config)#router bgp 100
R1(config-router)#neighbor 2.2.2.2 remote-as 200
R1(config-router)#neighbor 2.2.2.2 ebgp-multihop
R1(config-router)#neighbor 2.2.2.2 update-source loopback 0
R1(config-router)#exit
R1(config)#ip route 2.2.2.2 255.255.255.255 12.1.1.2
R1(config)#
*Mar  1 05:28:47.930: %BGP-5-ADJCHANGE: neighbor 2.2.2.2 Up

R2#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
R2(config)#router bgp 200
R2(config-router)#neighbor 1.1.1.1 remote-as 100
R2(config-router)#neighbor 1.1.1.1 ebgp-multihop
R2(config-router)#neighbor 1.1.1.1 update-source loopback 0
R2(config-router)#neighbor 1.1.1.1 next-hop-self
R2(config-router)#neighbor 1.1.1.1 default-originate
R2(config-router)#neighbor 3.3.3.3 remote-as 200
R2(config-router)#neighbor 3.3.3.3 update-source loopback 0
R2(config-router)#neighbor 3.3.3.3 next-hop-self
R2(config-router)#neighbor 3.3.3.3 default-originate
R2(config-router)#exit
R2(config)#ip route 1.1.1.1 255.255.255.255 12.1.1.1
R2(config)#
*Mar  1 05:27:33.898: %BGP-5-ADJCHANGE: neighbor 1.1.1.1 Up
R2(config)#ip route 3.3.3.3 255.255.255.255 23.1.1.3
R2(config)#
*Mar  1 05:29:14.142: %BGP-5-ADJCHANGE: neighbor 3.3.3.3 Up

R3#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
R3(config)#router bgp 200
R3(config-router)#neighbor 2.2.2.2 remote-as 200
R3(config-router)#neighbor 2.2.2.2 update-source loopback 0
R3(config-router)#exit
R3(config)#ip route 2.2.2.2 255.255.255.255 23.1.1.2
R3(config)#
*Mar  1 05:27:23.622: %BGP-5-ADJCHANGE: neighbor 2.2.2.2 Up

Topologi BGP - 01 mengkonfigurasi Routing BGP dengan menggunakan peer interface atau direct interface address sebagai neighbor. Gambar topologi dapat dilihat di bawah,

 
R1#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
R1(config)#router bgp 100
R1(config-router)#neighbor 12.1.1.2 remote-as 200
R1(config-router)#network 1.1.1.1 mask 255.255.255.255
R1(config-router)#
*Mar  1 00:07:51.519: %BGP-5-ADJCHANGE: neighbor 12.1.1.2 Up

R2#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
R2(config)#router bgp 200
R2(config-router)#neighbor 12.1.1.1 remote-as 100
R2(config-router)#
*Mar  1 00:10:48.903: %BGP-5-ADJCHANGE: neighbor 12.1.1.1 Up
R2(config-router)#neighbor 23.1.1.3 remote-as 200
R2(config-router)#neighbor 23.1.1.3 next-hop-self
R2(config-router)#neighbor 23.1.1.3 default-originate
R2(config-router)#network 2.2.2.2 mask 255.255.255.255
R2(config-router)#network 23.1.1.0 mask 255.255.255.0
R2(config-router)#
*Mar  1 00:17:31.939: %BGP-5-ADJCHANGE: neighbor 23.1.1.3 Up

R3#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
R3(config)#router bgp 200
R3(config-router)#neighbor 23.1.1.2 remote-as 200
R3(config-router)#network 3.3.3.3 mask 255.255.255.255
R3(config-router)#
*Mar  1 00:14:21.527: %BGP-5-ADJCHANGE: neighbor 23.1.1.2 Up