這次來個BGP反射器的簡單小實驗

• 前言
• 一、先把端口簡單配置寫完（OSPF、RIP、IP）
• • R1
  • R2
  • R3
  • R4
  • R5
  • R6
  • R7
  • R8
• 二、配置BGP及反射器
• • R1
  • R2
  • R3
  • R4
  • R5
  • R6
  • R7
  • R8
• 三、連通性（以R8的環回口舉例）
• 總結

---

前言

一、先把端口簡單配置寫完（OSPF、RIP、IP）

R1

[Huawei]user- con 0 [Huawei-ui-console0]id 0 0 [Huawei-ui-console0]int g0/0/0 [Huawei-GigabitEthernet0/0/0]ip add 12.0.0.1 24 [Huawei-GigabitEthernet0/0/0]int g0/0/1 [Huawei-GigabitEthernet0/0/1]ip add 15.0.0.1 24 [Huawei-GigabitEthernet0/0/1]int loop0 [Huawei-LoopBack0]ip add 1.1.1.1 32 [Huawei-LoopBack0]q [Huawei]ospf [Huawei-ospf-1]area 0 [Huawei-ospf-1-area-0.0.0.0]net 1.1.1.1 0.0.0.0 [Huawei-ospf-1-area-0.0.0.0]net 12.0.0.0 0.0.0.255 [Huawei-ospf-1-area-0.0.0.0]net 15.0.0.0 0.0.0.255

R2

[Huawei]user- con 0 [Huawei-ui-console0]id 0 0 [Huawei-ui-console0]int g0/0/0 [Huawei-GigabitEthernet0/0/0]ip add 12.0.0.2 24 [Huawei-GigabitEthernet0/0/0]int g0/0/1 [Huawei-GigabitEthernet0/0/1]ip add 24.0.0.2 24 [Huawei-GigabitEthernet0/0/1]int g0/0/2 [Huawei-GigabitEthernet0/0/2]ip add 23.0.0.2 24 [Huawei-GigabitEthernet0/0/2]int g1/0/0 [Huawei-GigabitEthernet1/0/0]ip add 25.0.0.2 24 [Huawei-GigabitEthernet1/0/0]int loop0 [Huawei-LoopBack0]ip add 2.2.2.2 32 [Huawei-LoopBack0]q [Huawei]ip route-s 6.6.6.6 32 56.0.0.6 [Huawei]ospf [Huawei-ospf-1]area 0 [Huawei-ospf-1-area-0.0.0.0]net 5.5.5.5 0.0.0.0 [Huawei-ospf-1-area-0.0.0.0]net 45.0.0.0 0.0.0.255 [Huawei-ospf-1-area-0.0.0.0]net 15.0.0.0 0.0.0.255 [Huawei-ospf-1-area-0.0.0.0]net 25.0.0.0 0.0.0.255 [Huawei-ospf-1-area-0.0.0.0]net 56.0.0.0 0.0.0.255 [Huawei-ospf-1-area-0.0.0.0]q [Huawei-ospf-1]import-route static

R3

[Huawei]user- con 0 [Huawei-ui-console0]id 0 0 [Huawei-ui-console0]int g0/0/2 [Huawei-GigabitEthernet0/0/2]ip add 23.0.0.3 24 [Huawei-GigabitEthernet0/0/2]int g0/0/1 [Huawei-GigabitEthernet0/0/1]ip add 37.0.0.3 24 [Huawei-GigabitEthernet0/0/1]int g0/0/0 [Huawei-GigabitEthernet0/0/0]ip add 36.0.0.3 24 [Huawei-GigabitEthernet0/0/0]int loop0 [Huawei-LoopBack0]ip add 3.3.3.3 32 [Huawei-LoopBack0]q [Huawei]ip route-s 7.7.7.7 32 37.0.0.7 [Huawei]ip route-s 2.2.2.2 32 23.0.0.2 [Huawei]ospf [Huawei-ospf-1]area 1 [Huawei-ospf-1-area-0.0.0.1]net 3.3.3.3 0.0.0.0 [Huawei-ospf-1-area-0.0.0.1]net 23.0.0.0 0.0.0.255 [Huawei-ospf-1-area-0.0.0.1]net 36.0.0.0 0.0.0.255 [Huawei-ospf-1-area-0.0.0.1]q [Huawei-ospf-1]import-route static [Huawei-ospf-1]q

R4

[Huawei]user- con 0 [Huawei-ui-console0]id 0 0 [Huawei-ui-console0]int g0/0/0 [Huawei-GigabitEthernet0/0/0]ip add 45.0.0.4 24 [Huawei-GigabitEthernet0/0/0]int g0/0/1 [Huawei-GigabitEthernet0/0/1]ip add 24.0.0.4 24 [Huawei-GigabitEthernet0/0/1]int loop0 [Huawei-LoopBack0]ip add 4.4.4.4 32 [Huawei-LoopBack0]q [Huawei]ospf [Huawei-ospf-1]area 0 [Huawei-ospf-1-area-0.0.0.0]net 4.4.4.4 0.0.0.0 [Huawei-ospf-1-area-0.0.0.0]net 24.0.0.0 0.0.0.255 [Huawei-ospf-1-area-0.0.0.0]net 45.0.0.0 0.0.0.255

R5

[Huawei]user- con 0 [Huawei-ui-console0]id 0 0 [Huawei-ui-console0]int g0/0/0 [Huawei-GigabitEthernet0/0/0]ip add 45.0.0.5 24 [Huawei-GigabitEthernet0/0/0]int g0/0/1 [Huawei-GigabitEthernet0/0/1]ip add 15.0.0.5 24 [Huawei-GigabitEthernet0/0/1]int g0/0/2 [Huawei-GigabitEthernet0/0/2]ip add 56.0.0.5 24 [Huawei-GigabitEthernet0/0/2]int g1/0/0 [Huawei-GigabitEthernet1/0/0]ip add 25.0.0.5 24 [Huawei-GigabitEthernet1/0/0]int loop0 [Huawei-LoopBack0]ip add 5.5.5.5 32 [Huawei-LoopBack0]q [Huawei]ip route-s 6.6.6.6 32 56.0.0.6 [Huawei]ospf [Huawei-ospf-1]area 0 [Huawei-ospf-1-area-0.0.0.0]net 5.5.5.5 0.0.0.0 [Huawei-ospf-1-area-0.0.0.0]net 45.0.0.0 0.0.0.255 [Huawei-ospf-1-area-0.0.0.0]net 15.0.0.0 0.0.0.255 [Huawei-ospf-1-area-0.0.0.0]net 25.0.0.0 0.0.0.255 [Huawei-ospf-1-area-0.0.0.0]net 56.0.0.0 0.0.0.255 [Huawei-ospf-1-area-0.0.0.0]q [Huawei-ospf-1]import-route static [Huawei-ospf-1]q

R6

[Huawei]user- con 0 [Huawei-ui-console0]id 0 0 [Huawei-ui-console0]int g0/0/1 [Huawei-GigabitEthernet0/0/1]ip add 68.0.0.6 24 [Huawei-GigabitEthernet0/0/1]int g0/0/2 [Huawei-GigabitEthernet0/0/2]ip add 56.0.0.6 24 [Huawei-GigabitEthernet0/0/2]int g0/0/0 [Huawei-GigabitEthernet0/0/0]ip add 36.0.0.6 24 [Huawei-GigabitEthernet0/0/0]int loop0 [Huawei-LoopBack0]ip add 6.6.6.6 32 [Huawei-LoopBack0]q [Huawei]ip route-s 8.8.8.8 32 68.0.0.8 [Huawei]ip route-s 5.5.5.5 32 56.0.0.5 [Huawei]ospf [Huawei-ospf-1]area 1 [Huawei-ospf-1-area-0.0.0.1]net 56.0.0.0 0.0.0.255 [Huawei-ospf-1-area-0.0.0.1]net 36.0.0.0 0.0.0.255 [Huawei-ospf-1-area-0.0.0.1]net 6.6.6.6 0.0.0.0 [Huawei-ospf-1-area-0.0.0.1]q [Huawei-ospf-1]import-route static [Huawei-ospf-1]q

R7

[Huawei]user- con 0 [Huawei-ui-console0]id 0 0 [Huawei-ui-console0]int g0/0/1 [Huawei-GigabitEthernet0/0/1]ip add 37.0.0.7 24 [Huawei-GigabitEthernet0/0/1]int g0/0/0 [Huawei-GigabitEthernet0/0/0]ip add 78.0.0.7 24 [Huawei-GigabitEthernet0/0/0]int loop0 [Huawei-LoopBack0]ip add 7.7.7.7 32 [Huawei-LoopBack0]q [Huawei]ip route-s 3.3.3.3 32 37.0.0.3 [Huawei]rip [Huawei-rip-1]v 2 [Huawei-rip-1]undo sum [Huawei-rip-1]net 7.0.0.0 [Huawei-rip-1]net 78.0.0.0

R8

[Huawei]user- con 0 [Huawei-ui-console0]id 0 0 [Huawei-ui-console0]int g0/0/1 [Huawei-GigabitEthernet0/0/1]ip add 68.0.0.8 24 [Huawei-GigabitEthernet0/0/1]int g0/0/0 [Huawei-GigabitEthernet0/0/0]ip add 78.0.0.8 24 [Huawei-GigabitEthernet0/0/0]int loop0 [Huawei-LoopBack0]ip add 8.8.8.8 32 [Huawei-LoopBack0]q [Huawei]ip route-s 6.6.6.6 32 68.0.0.6 [Huawei]rip [Huawei-rip-1]v 2 [Huawei-rip-1]undo sum [Huawei-rip-1]net 8.0.0.0 [Huawei-rip-1]net 78.0.0.0

二、配置BGP及反射器

R1

[Huawei]bgp 100 [Huawei-bgp]router-id 1.1.1.1 [Huawei-bgp]peer 2.2.2.2 as-n 100 [Huawei-bgp]peer 2.2.2.2 connect-interface LoopBack0 [Huawei-bgp]peer 5.5.5.5 as-n 100 [Huawei-bgp]peer 5.5.5.5 connect-interface LoopBack0 [Huawei-bgp]peer 2.2.2.2 re [Huawei-bgp]net 1.1.1.1 32 [Huawei-bgp]net 2.2.2.2 32 [Huawei-bgp]net 5.5.5.5 32

R2

[Huawei]bgp 100 [Huawei-bgp]router-id 2.2.2.2 [Huawei-bgp]peer 1.1.1.1 as-n 100 [Huawei-bgp]peer 3.3.3.3 as-n 100 [Huawei-bgp]peer 4.4.4.4 as-n 100 [Huawei-bgp]peer 5.5.5.5 as-n 100 [Huawei-bgp]peer 1.1.1.1 connect-interface LoopBack0 [Huawei-bgp]peer 3.3.3.3 connect-interface LoopBack0 [Huawei-bgp]peer 4.4.4.4 connect-interface LoopBack0 [Huawei-bgp]peer 5.5.5.5 connect-interface LoopBack0 [Huawei-bgp]peer 1.1.1.1 reflect-client [Huawei-bgp]peer 4.4.4.4 reflect-client [Huawei-bgp]peer 5.5.5.5 reflect-client [Huawei-bgp]peer 3.3.3.3 reflect-client [Huawei-bgp]net 1.1.1.1 32 [Huawei-bgp]net 2.2.2.2 32 [Huawei-bgp]net 3.3.3.3 32 [Huawei-bgp]net 4.4.4.4 32 [Huawei-bgp]net 5.5.5.5 32

R3

[Huawei]bgp 100 [Huawei-bgp]router-id 3.3.3.3 [Huawei-bgp]peer 2.2.2.2 as-n 100 [Huawei-bgp]peer 6.6.6.6 as-n 100 [Huawei-bgp]peer 2.2.2.2 con loop0 [Huawei-bgp]peer 6.6.6.6 con loop0 [Huawei-bgp]peer 7.7.7.7 as-n 200 [Huawei-bgp]peer 7.7.7.7 con loop0 [Huawei-bgp]peer 7.7.7.7 ebgp-max-hop 2 [Huawei-bgp]net 2.2.2.2 32 [Huawei-bgp]net 6.6.6.6 32 [Huawei-bgp]net 3.3.3.3 32 [Huawei-bgp]net 7.7.7.7 32

R4

[Huawei]bgp 100 [Huawei-bgp]router-id 4.4.4.4 [Huawei-bgp]peer 2.2.2.2 as-n 100 [Huawei-bgp]peer 5.5.5.5 as-n 100 [Huawei-bgp]peer 2.2.2.2 connect-interface LoopBack0 [Huawei-bgp]peer 5.5.5.5 connect-interface LoopBack0 [Huawei-bgp]net 4.4.4.4 32 [Huawei-bgp]net 5.5.5.5 32

R5

[Huawei]bgp 100 [Huawei-bgp]router-id 5.5.5.5 [Huawei-bgp]peer 1.1.1.1 as-n 100 [Huawei-bgp]peer 2.2.2.2 as-n 100 [Huawei-bgp]peer 4.4.4.4 as-n 100 [Huawei-bgp]peer 6.6.6.6 as-n 100 [Huawei-bgp]peer 1.1.1.1 connect-interface LoopBack0 [Huawei-bgp]peer 2.2.2.2 connect-interface LoopBack0 [Huawei-bgp]peer 4.4.4.4 connect-interface LoopBack0 [Huawei-bgp]peer 6.6.6.6 connect-interface LoopBack0 [Huawei-bgp]peer 1.1.1.1 reflect-client [Huawei-bgp]peer 2.2.2.2 reflect-client [Huawei-bgp]peer 4.4.4.4 reflect-client [Huawei-bgp]peer 6.6.6.6 reflect-client [Huawei-bgp]net 1.1.1.1 32 [Huawei-bgp]net 2.2.2.2 32 [Huawei-bgp]net 4.4.4.4 32 [Huawei-bgp]net 5.5.5.5 32 [Huawei-bgp]net 6.6.6.6 32

R6

[Huawei]bgp 100 [Huawei-bgp]router-id 6.6.6.6 [Huawei-bgp]peer 5.5.5.5 as-n 100 [Huawei-bgp]peer 3.3.3.3 as-n 100 [Huawei-bgp]peer 3.3.3.3 connect-interface LoopBack0 [Huawei-bgp]peer 5.5.5.5 connect-interface LoopBack0 [Huawei-bgp]peer 8.8.8.8 as-n 200 [Huawei-bgp]peer 8.8.8.8 connect-interface LoopBack0 [Huawei-bgp]peer 8.8.8.8 ebgp-max-hop 2 [Huawei-bgp]net 3.3.3.3 32 [Huawei-bgp]net 5.5.5.5 32 [Huawei-bgp]net 6.6.6.6 32 [Huawei-bgp]net 8.8.8.8 32

R7

[Huawei]bgp 200 [Huawei-bgp]router-id 7.7.7.7 [Huawei-bgp]peer 8.8.8.8 as-n 200 [Huawei-bgp]peer 3.3.3.3 as-n 100 [Huawei-bgp]peer 8.8.8.8 connect-interface LoopBack0 [Huawei-bgp]peer 3.3.3.3 connect-interface LoopBack0 [Huawei-bgp]peer 8.8.8.8 next-hop-local [Huawei-bgp]peer 3.3.3.3 ebgp-max-hop 2 [Huawei-bgp]net 3.3.3.3 32 [Huawei-bgp]net 7.7.7.7 32 [Huawei-bgp]net 8.8.8.8 32

R8

[Huawei]bgp 200 [Huawei-bgp]router-id 8.8.8.8 [Huawei-bgp]peer 7.7.7.7 as-n 200 [Huawei-bgp]peer 6.6.6.6 as-n 100 [Huawei-bgp]peer 7.7.7.7 connect-interface LoopBack0 [Huawei-bgp]peer 6.6.6.6 connect-interface LoopBack0 [Huawei-bgp]peer 7.7.7.7 next-hop-local [Huawei-bgp]peer 6.6.6.6 ebgp-max-hop 2 [Huawei-bgp]net 6.6.6.6 32 [Huawei-bgp]net 7.7.7.7 32 [Huawei-bgp]net 8.8.8.8 32

三、連通性（以R8的環回口舉例）

[Huawei-bgp]ping -a 8.8.8.8 1.1.1.1PING 1.1.1.1: 56 data bytes, press CTRL_C to breakReply from 1.1.1.1: bytes=56 Sequence=1 ttl=253 time=40 msReply from 1.1.1.1: bytes=56 Sequence=2 ttl=253 time=40 msReply from 1.1.1.1: bytes=56 Sequence=3 ttl=253 time=30 msReply from 1.1.1.1: bytes=56 Sequence=4 ttl=253 time=30 msReply from 1.1.1.1: bytes=56 Sequence=5 ttl=253 time=40 ms--- 1.1.1.1 ping statistics ---5 packet(s) transmitted5 packet(s) received0.00% packet lossround-trip min/avg/max = 30/36/40 ms[Huawei-bgp]ping -a 8.8.8.8 2.2.2.2PING 2.2.2.2: 56 data bytes, press CTRL_C to breakReply from 2.2.2.2: bytes=56 Sequence=1 ttl=253 time=30 msReply from 2.2.2.2: bytes=56 Sequence=2 ttl=253 time=30 msReply from 2.2.2.2: bytes=56 Sequence=3 ttl=253 time=30 msReply from 2.2.2.2: bytes=56 Sequence=4 ttl=253 time=30 msReply from 2.2.2.2: bytes=56 Sequence=5 ttl=253 time=30 ms--- 2.2.2.2 ping statistics ---5 packet(s) transmitted5 packet(s) received0.00% packet lossround-trip min/avg/max = 30/30/30 ms[Huawei-bgp]ping -a 8.8.8.8 3.3.3.3PING 3.3.3.3: 56 data bytes, press CTRL_C to breakReply from 3.3.3.3: bytes=56 Sequence=1 ttl=254 time=40 msReply from 3.3.3.3: bytes=56 Sequence=2 ttl=254 time=30 msReply from 3.3.3.3: bytes=56 Sequence=3 ttl=254 time=20 msReply from 3.3.3.3: bytes=56 Sequence=4 ttl=254 time=20 msReply from 3.3.3.3: bytes=56 Sequence=5 ttl=254 time=30 ms--- 3.3.3.3 ping statistics ---5 packet(s) transmitted5 packet(s) received0.00% packet lossround-trip min/avg/max = 20/28/40 ms[Huawei-bgp]ping -a 8.8.8.8 4.4.4.4PING 4.4.4.4: 56 data bytes, press CTRL_C to breakReply from 4.4.4.4: bytes=56 Sequence=1 ttl=253 time=30 msReply from 4.4.4.4: bytes=56 Sequence=2 ttl=253 time=40 msReply from 4.4.4.4: bytes=56 Sequence=3 ttl=253 time=40 msReply from 4.4.4.4: bytes=56 Sequence=4 ttl=253 time=30 msReply from 4.4.4.4: bytes=56 Sequence=5 ttl=253 time=30 ms--- 4.4.4.4 ping statistics ---5 packet(s) transmitted5 packet(s) received0.00% packet lossround-trip min/avg/max = 30/34/40 ms[Huawei-bgp]ping -a 8.8.8.8 5.5.5.5PING 5.5.5.5: 56 data bytes, press CTRL_C to breakReply from 5.5.5.5: bytes=56 Sequence=1 ttl=254 time=20 msReply from 5.5.5.5: bytes=56 Sequence=2 ttl=254 time=20 msReply from 5.5.5.5: bytes=56 Sequence=3 ttl=254 time=10 msReply from 5.5.5.5: bytes=56 Sequence=4 ttl=254 time=20 msReply from 5.5.5.5: bytes=56 Sequence=5 ttl=254 time=20 ms--- 5.5.5.5 ping statistics ---5 packet(s) transmitted5 packet(s) received0.00% packet lossround-trip min/avg/max = 10/18/20 ms[Huawei-bgp]ping -a 8.8.8.8 6.6.6.6PING 6.6.6.6: 56 data bytes, press CTRL_C to breakReply from 6.6.6.6: bytes=56 Sequence=1 ttl=255 time=30 msReply from 6.6.6.6: bytes=56 Sequence=2 ttl=255 time=30 msReply from 6.6.6.6: bytes=56 Sequence=3 ttl=255 time=30 msReply from 6.6.6.6: bytes=56 Sequence=4 ttl=255 time=20 msReply from 6.6.6.6: bytes=56 Sequence=5 ttl=255 time=20 ms--- 6.6.6.6 ping statistics ---5 packet(s) transmitted5 packet(s) received0.00% packet lossround-trip min/avg/max = 20/26/30 ms[Huawei-bgp]ping -a 8.8.8.8 7.7.7.7PING 7.7.7.7: 56 data bytes, press CTRL_C to breakReply from 7.7.7.7: bytes=56 Sequence=1 ttl=255 time=20 msReply from 7.7.7.7: bytes=56 Sequence=2 ttl=255 time=20 msReply from 7.7.7.7: bytes=56 Sequence=3 ttl=255 time=30 msReply from 7.7.7.7: bytes=56 Sequence=4 ttl=255 time=10 msReply from 7.7.7.7: bytes=56 Sequence=5 ttl=255 time=20 ms--- 7.7.7.7 ping statistics ---5 packet(s) transmitted5 packet(s) received0.00% packet lossround-trip min/avg/max = 10/20/30 ms

總結

做個試驗，讓大家稍微了解下BGP反射器的配置命令

總結

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