实验要求
除R5的5.5.5.0环回外，其他所有的环回均可以互相访问
实验拓扑
R2、3、4里面用OSPF
R2
<r2>display ospf peer brief OSPF Process 1 with Router ID 2.2.2.2 Peer Statistic Information ---------------------------------------------------------------------------- Area Id Interface Neighbor id State 0.0.0.0 GigabitEthernet0/0/1 3.3.3.3 Full ---------------------------------------------------------------------------- <r2>
R3
<r3>display ospf peer brief OSPF Process 1 with Router ID 3.3.3.3 Peer Statistic Information ---------------------------------------------------------------------------- Area Id Interface Neighbor id State 0.0.0.0 GigabitEthernet0/0/0 2.2.2.2 Full 0.0.0.0 GigabitEthernet0/0/1 4.4.4.4 Full ---------------------------------------------------------------------------- <r3>
R4
<r4>display ospf peer brief OSPF Process 1 with Router ID 4.4.4.4 Peer Statistic Information ---------------------------------------------------------------------------- Area Id Interface Neighbor id State 0.0.0.0 GigabitEthernet0/0/0 3.3.3.3 Full ---------------------------------------------------------------------------- <r4>
R1、2、3、4、5的bgp配置
R1
[r1-bgp]display this [V200R003C00] # bgp 1 router-id 1.1.1.1 peer 12.1.1.2 as-number 2 # ipv4-family unicast undo synchronization deterministic-med network 1.1.1.0 255.255.255.0 peer 12.1.1.2 enable # return
R2
[r2-bgp]display th [V200R003C00] # bgp 2 router-id 2.2.2.2 peer 3.3.3.3 as-number 2 peer 3.3.3.3 connect-interface LoopBack0 peer 4.4.4.4 as-number 2 peer 4.4.4.4 connect-interface LoopBack0 peer 12.1.1.1 as-number 1 # ipv4-family unicast undo synchronization network 2.2.2.0 255.255.255.0 peer 3.3.3.3 enable peer 3.3.3.3 next-hop-local peer 4.4.4.4 enable peer 4.4.4.4 next-hop-local peer 12.1.1.1 enable # return
R3
[r3-bgp]display th [V200R003C00] # bgp 2 router-id 3.3.3.3 peer 2.2.2.2 as-number 2 peer 2.2.2.2 connect-interface LoopBack0 peer 4.4.4.4 as-number 2 peer 4.4.4.4 connect-interface LoopBack0 # ipv4-family unicast undo synchronization network 3.3.3.0 255.255.255.0 peer 2.2.2.2 enable peer 4.4.4.4 enable # return
R4
[r4-bgp]display th [V200R003C00] # bgp 2 router-id 4.4.4.4 peer 2.2.2.2 as-number 2 peer 2.2.2.2 connect-interface LoopBack0 peer 3.3.3.3 as-number 2 peer 3.3.3.3 connect-interface LoopBack0 peer 5.5.5.5 as-number 3 peer 5.5.5.5 ebgp-max-hop 2 peer 5.5.5.5 connect-interface LoopBack0 # ipv4-family unicast undo synchronization network 4.4.4.0 255.255.255.0 peer 2.2.2.2 enable peer 2.2.2.2 next-hop-local peer 3.3.3.3 enable peer 3.3.3.3 next-hop-local peer 5.5.5.5 enable # return
R5
[r5-bgp]display th [V200R003C00] # bgp 3 router-id 5.5.5.5 peer 4.4.4.4 as-number 2 peer 4.4.4.4 ebgp-max-hop 2 peer 4.4.4.4 connect-interface LoopBack0 # ipv4-family unicast undo synchronization network 99.1.1.0 255.255.255.0 peer 4.4.4.4 enable # return
测试
除了5.5.5.0 /24环回其他环回都可以通
<r1>ping -a 1.1.1.1 3.3.3.3 PING 3.3.3.3: 56 data bytes, press CTRL_C to break Reply from 3.3.3.3: bytes=56 Sequence=1 ttl=254 time=30 ms Reply from 3.3.3.3: bytes=56 Sequence=2 ttl=254 time=20 ms Reply from 3.3.3.3: bytes=56 Sequence=3 ttl=254 time=30 ms Reply from 3.3.3.3: bytes=56 Sequence=4 ttl=254 time=30 ms Reply from 3.3.3.3: bytes=56 Sequence=5 ttl=254 time=30 ms --- 3.3.3.3 ping statistics --- 5 packet(s) transmitted 5 packet(s) received 0.00% packet loss round-trip min/avg/max = 20/28/30 ms <r1>ping -a 1.1.1.1 3.3.3.3 PING 3.3.3.3: 56 data bytes, press CTRL_C to break Reply from 3.3.3.3: bytes=56 Sequence=1 ttl=254 time=20 ms Reply from 3.3.3.3: bytes=56 Sequence=2 ttl=254 time=30 ms Reply from 3.3.3.3: bytes=56 Sequence=3 ttl=254 time=40 ms Reply from 3.3.3.3: bytes=56 Sequence=4 ttl=254 time=40 ms Reply from 3.3.3.3: bytes=56 Sequence=5 ttl=254 time=20 ms --- 3.3.3.3 ping statistics --- 5 packet(s) transmitted 5 packet(s) received 0.00% packet loss round-trip min/avg/max = 20/30/40 ms <r1>ping -a 1.1.1.1 4.4.4.4 PING 4.4.4.4: 56 data bytes, press CTRL_C to break Reply from 4.4.4.4: bytes=56 Sequence=1 ttl=253 time=40 ms Reply from 4.4.4.4: bytes=56 Sequence=2 ttl=253 time=20 ms Reply from 4.4.4.4: bytes=56 Sequence=3 ttl=253 time=40 ms Reply from 4.4.4.4: bytes=56 Sequence=4 ttl=253 time=40 ms Reply from 4.4.4.4: bytes=56 Sequence=5 ttl=253 time=40 ms --- 4.4.4.4 ping statistics --- 5 packet(s) transmitted 5 packet(s) received 0.00% packet loss round-trip min/avg/max = 20/36/40 ms <r1>ping -a 1.1.1.1 99.1.1.1 PING 99.1.1.1: 56 data bytes, press CTRL_C to break Reply from 99.1.1.1: bytes=56 Sequence=1 ttl=252 time=60 ms Reply from 99.1.1.1: bytes=56 Sequence=2 ttl=252 time=40 ms Reply from 99.1.1.1: bytes=56 Sequence=3 ttl=252 time=30 ms Reply from 99.1.1.1: bytes=56 Sequence=4 ttl=252 time=60 ms Reply from 99.1.1.1: bytes=56 Sequence=5 ttl=252 time=50 ms --- 99.1.1.1 ping statistics --- 5 packet(s) transmitted 5 packet(s) received 0.00% packet loss round-trip min/avg/max = 30/48/60 ms
