AR1：
<Huawei>undo terminal monitor
<Huawei>system-view
[Huawei]user-interface console 0
[Huawei-ui-console0]idle-timeout 0 0
[Huawei-ui-console0]sysname R1
[R1]int g0/0/0
[R1-GigabitEthernet0/0/0]ip add 12.1.1.1 24
[R1-GigabitEthernet0/0/0]undo shutdown
[R1-GigabitEthernet0/0/0]int loop 0
[R1-LoopBack0]ip add 1.1.1.1 32
[R1-LoopBack0]quit
[R1]ospf 1
[R1-ospf-1]area 0
[R1-ospf-1-area-0.0.0.0]network 1.1.1.1 0.0.0.0
[R1-ospf-1-area-0.0.0.0]network 12.1.1.0 0.0.0.255
[R1-ospf-1-area-0.0.0.0]quit
[R1-ospf-1]quit
[R1]bgp 100
[R1-bgp]router
[R1-bgp]router-id 1.1.1.1
[R1-bgp]peer 12.1.1.2 as-number 100
[R1-bgp]network 1.1.1.1 32
[R1-bgp]network 12.1.1.0 24
[R1-bgp]display ip rou
AR2：
<Huawei>undo terminal monitor
<Huawei>system-view
[Huawei]user-interface console 0
[Huawei-ui-console0]idle-timeout 0 0
[Huawei-ui-console0]sysname R2
[R2]int g0/0/0
[R2-GigabitEthernet0/0/0]ip add 12.1.1.2 24
[R2-GigabitEthernet0/0/0]undo shutdown
[R2-GigabitEthernet0/0/0]int g0/0/1
[R2-GigabitEthernet0/0/1]ip add 23.1.1.2 24
[R2-GigabitEthernet0/0/1]undo shutdown
[R2-GigabitEthernet0/0/1]int loop 0
[R2-LoopBack0]ip add 2.2.2.2 32
[R2-LoopBack0]quit
[R2]ospf 1
[R2-ospf-1]area 0
[R2-ospf-1-area-0.0.0.0]network 2.2.2.2 0.0.0.0
[R2-ospf-1-area-0.0.0.0]network 12.1.1.0 0.0.0.255
[R2-ospf-1-area-0.0.0.0]quit
[R2-ospf-1]quit
[R2]bgp 100
[R2-bgp]router-id 2.2.2.2
[R2-bgp]peer 12.1.1.1 as-number 100
[R2-bgp]peer 23.1.1.3 as-number 200
[R2-bgp]network 2.2.2.2 32
[R2-bgp]network 12.1.1.0 24
[R2-bgp]network 23.1.1.0 24
[R2-bgp]quit
AR3：
<Huawei>undo terminal monitor
<Huawei>system-view
[Huawei]user-interface console 0
[Huawei-ui-console0]idle-timeout 0 0
[Huawei-ui-console0]sysname R3
[R3]int g0/0/0
[R3-GigabitEthernet0/0/0]ip add 23.1.1.3 24
[R3-GigabitEthernet0/0/0]undo shutdown
[R3-GigabitEthernet0/0/0]int loop 0
[R3-LoopBack0]ip add 3.3.3.3 32
[R3-LoopBack0]quit
[R3]bgp 200
[R3-bgp]router-id 3.3.3.3
[R3-bgp]peer 23.1.1.2 as-number 100
[R3-bgp]quit
[R3]bgp 200
[R3-bgp]network 3.3.3.3 32
[R3-bgp]network 23.1.1.0 24
[R3-bgp]quit