实验拓扑:
实验配置:
ip地址配置:
#R1
[R1]int g0/0/0
[R1-GigabitEthernet0/0/0]ip add 12.1.1.1 24
[R1-GigabitEthernet0/0/0]int l0
[R1-LoopBack0]ip add 172.16.0.1 32
[R1-LoopBack0]int l1
[R1-LoopBack1]ip add 192.168.1.1 24
#R2
[R2]int g0/0/0
[R2-GigabitEthernet0/0/0]ip add 12.1.1.2 24
[R2-GigabitEthernet0/0/0]int g0/0/1
[R2-GigabitEthernet0/0/1]ip add 172.16.1.1 30
[R2-GigabitEthernet0/0/1]int g0/0/2
[R2-GigabitEthernet0/0/2]ip add 172.16.1.21 30
[R2-GigabitEthernet0/0/2]int l0
[R2-LoopBack0]ip add 172.16.0.2 32
#R3
[R3]int g0/0/0
[R3-GigabitEthernet0/0/0]ip add 172.16.1.2 30
[R3-GigabitEthernet0/0/0]int g0/0/1
[R3-GigabitEthernet0/0/1]ip add 172.16.1.5 30
[R3-GigabitEthernet0/0/1]int l0
[R3-LoopBack0]ip add 172.16.0.3 32
[R3-LoopBack0]int l1
[R3-LoopBack1]ip add 172.16.3.3 24
#R4
[R4]int g0/0/0
[R4-GigabitEthernet0/0/0]ip add 172.16.1.6 30
[R4-GigabitEthernet0/0/0]int g0/0/1
[R4-GigabitEthernet0/0/1]ip add 172.16.1.9 30
[R4-GigabitEthernet0/0/1]int l0
[R4-LoopBack0]ip add 172.16.0.4 32
[R4-LoopBack0]int l1
[R4-LoopBack1]ip add 172.16.4.4 24
#R5
[R5]int g0/0/0
[R5-GigabitEthernet0/0/0]ip add 172.16.1.22 30
[R5-GigabitEthernet0/0/0]int g0/0/1
[R5-GigabitEthernet0/0/1]ip add 172.16.1.17 30
[R5-GigabitEthernet0/0/1]int l0
[R5-LoopBack0]ip add 172.16.0.5 32
[R5-LoopBack0]int l1
[R5-LoopBack1]ip add 172.16.5.5 24
#R6
[R6]int g0/0/0
[R6-GigabitEthernet0/0/0]ip add 172.16.1.18 30
[R6-GigabitEthernet0/0/0]
[R6-GigabitEthernet0/0/0]int g0/0/1
[R6-GigabitEthernet0/0/1]ip add 172.16.1.13 30
[R6-GigabitEthernet0/0/1]int l0
[R6-LoopBack0]ip add 172.16.0.6 32
[R6-LoopBack0]int l1
[R6-LoopBack1]ip add 172.16.6.6 24
#R7
[R7]int g0/0/0
[R7-GigabitEthernet0/0/0]ip add 172.16.1.14 30
[R7-GigabitEthernet0/0/0]int g0/0/1
[R7-GigabitEthernet0/0/1]ip add 172.16.1.10 30
[R7-GigabitEthernet0/0/1]int g0/0/2
[R7-GigabitEthernet0/0/2]ip add 34.1.1.7 24
[R7-GigabitEthernet0/0/2]int l0
[R7-LoopBack0]ip add 172.16.0.7 32
[R7-LoopBack0]int l1
[R7-LoopBack1]ip add 172.16.7.7 24
#R8
[R8]int g0/0/0
[R8-GigabitEthernet0/0/0]ip add 34.1.1.8 24
[R8]int l0
[R8-LoopBack0]ip add 172.16.0.8 32
[R8-LoopBack0]int l1
[R8-LoopBack1]ip add 192.168.2.8 24
ospf配置:
#R2
[R2]ospf 1 router-id 2.2.2.2
[R2-ospf-1]a 0
[R2-ospf-1-area-0.0.0.0]net 172.16.0.2 0.0.0.0
[R2-ospf-1-area-0.0.0.0]net 172.16.1.0 0.0.0.3
[R2-ospf-1-area-0.0.0.0]net 172.16.1.20 0.0.0.3
#R3
[R3]ospf 1 router-id 3.3.3.3
[R3-ospf-1]a 0
[R3-ospf-1-area-0.0.0.0]net 172.16.1.0 0.0.0.3
[R3-ospf-1-area-0.0.0.0]net 172.16.1.4 0.0.0.3
[R3-ospf-1-area-0.0.0.0]net 172.16.0.3 0.0.0.0
[R3-ospf-1-area-0.0.0.0]net 172.16.3.0 0.0.0.255
#R4
[R4]ospf 1 router-id 4.4.4.4
[R4-ospf-1]a 0
[R4-ospf-1-area-0.0.0.0]net 172.16.1.4 0.0.0.3
[R4-ospf-1-area-0.0.0.0]net 172.16.1.8 0.0.0.3
[R4-ospf-1-area-0.0.0.0]net 172.16.0.4 0.0.0.0
[R4-ospf-1-area-0.0.0.0]net 172.16.4.0 0.0.0.255
#R5
[R5]ospf 1 router-id 5.5.5.5
[R5-ospf-1]a 0
[R5-ospf-1-area-0.0.0.0]net 172.16.1.20 0.0.0.3
[R5-ospf-1-area-0.0.0.0]net 172.16.1.16 0.0.0.3
[R5-ospf-1-area-0.0.0.0]net 172.16.0.5 0.0.0.0
[R5-ospf-1-area-0.0.0.0]net 172.16.5.0 0.0.0.255
#R6
[R6]ospf 1 router-id 6.6.6.6
[R6-ospf-1]a 0
[R6-ospf-1-area-0.0.0.0]net 172.16.1.16 0.0.0.3
[R6-ospf-1-area-0.0.0.0]net 172.16.1.12 0.0.0.3
[R6-ospf-1-area-0.0.0.0]net 172.16.0.6 0.0.0.0
[R6-ospf-1-area-0.0.0.0]net 172.16.6.0 0.0.0.255
#R7
[R7]ospf 1 router-id 7.7.7.7
[R7-ospf-1]a 0
[R7-ospf-1-area-0.0.0.0]net 172.16.1.12 0.0.0.3
[R7-ospf-1-area-0.0.0.0]net 172.16.1.8 0.0.0.3
[R7-ospf-1-area-0.0.0.0]net 172.16.0.7 0.0.0.0
[R7-ospf-1-area-0.0.0.0]net 172.16.7.0 0.0.0.255
查看邻居表
配置BGP协议
R1
[R1]bgp 1
[R1-bgp]peer 12.1.1.2 as
[R1-bgp]peer 12.1.1.2 as-number 2
R2
#进入子AS编号
[R2]bgp 64512
#申明自己的大号
[R2-bgp]confederation id 2
#申明自己的联盟同伴
[R2-bgp]confederation peer-as 64513
#与R1建立EBGP邻居
[R2-bgp]peer 12.1.1.1 as-number 1
#跨越AS的EBGP邻居仍然需要更改下一跳为本机
[R2-bgp]peer 12.1.1.1 next-hop-local
#建立IBGP邻居
[R2-bgp]peer 172.16.0.3 as-number 64512
[R2-bgp]peer 172.16.0.3 connect-interface l0
#跨子AS建立EBGP邻居
[R2-bgp]peer 172.16.1.22 as-number 64513
[R2-bgp]peer 172.16.0.3 next-hop-local
R3
[R3]bgp 64512
[R3-bgp]confederation id 2
[R3-bgp]peer 172.16.0.2 as-number 64512
[R3-bgp]peer 172.16.0.2 connect-interface l0
[R3-bgp]peer 172.16.0.4 as-number 64512
R4
[R4]bgp 64512
[R4-bgp]confederation id 2
[R4-bgp]peer 172.16.0.3 as-number 64512
[R4-bgp]peer 172.16.0.3 connect-interface l0
R5
[R5]bgp 64513
[R5-bgp]confederation id 2e
[R5-bgp]confederation peer-as 64512
[R5-bgp]peer 172.16.1.21 as 64512
[R5-bgp]peer 172.16.1.21 next-hop-local
[R5-bgp]peer 172.16.0.6 as-number 64513
[R5-bgp]peer 172.16.0.6 connect-interface l0
R6
[R6]bgp 64513
[R6-bgp]confederation id 2
[R6-bgp]peer 172.16.0.5 as-number 64513
[R6-bgp]peer 172.16.0.5 connect-interface l0
[R6-bgp]peer 172.16.0.7
[R6-bgp]peer 172.16.0.7 as-number 64513
[R6-bgp]peer 172.16.0.7 connect-interface l0
R7
[R7]bgp 64513
[R7-bgp]confederation id 2
[R7-bgp]peer 34.1.1.8 as-number 3
[R7-bgp]peer 34.1.1.8 next-hop-local
[R7-bgp]peer 172.16.0.6 as-number 64513
[R7-bgp]peer 172.16.0.6 connect-interface l0
R8
[R8]bgp 3
[R8-bgp]peer 34.1.1.7 as
[R8-bgp]peer 34.1.1.7 as-number 2
查看建邻情况
因为BGP水平分割所以R3收到,IBGP邻居R2发来的路由不会传给R4,所以需要配置BGP发射器
配置BGP反射器
在R3和R6上面进行反射器的配置:
R3
[R3]bgp 64512
[R3-bgp]peer 172.16.0.4 reflect-client
R6
[R6]bgp 64513
[R6-bgp]peer 172.16.0.7 reflect-client
将172.16.0.1/32宣告进BGP协议中测试:
宣告网段达成全网通
R1和R8的业务网段不宣告
R1
[R1]bgp 1
[R1-bgp]net 172.16.0.1 32
R2
[R2]ip route-static 172.16.0.0 16 NULL 0
[R2]bgp 64512
[R2-bgp]net 172.16.0.0 16
R7
[R7]ip route-static 172.16.0.0 16 NULL 0
[R7]bgp 64513
[R7-bgp]net 172.16.0.0 16
R8
[R8]bgp 3
[R8-bgp]net 172.16.0.8 32
全网通测试:
R7环回pingR2环回
构建VPN隧道,使R1业务网段能和R8业务网段互通
R1
[R1]int t0/0/0
[R1-Tunnel0/0/0]ip add 10.1.1.1 24
[R1-Tunnel0/0/0]tunnel-protocol gre
[R1-Tunnel0/0/0]source 172.16.0.1
[R1-Tunnel0/0/0]description 172.16.0.8
[R1]ip route-static 192.168.2.0 24 Tunnel 0/0/0
R8
[R8]int Tunnel 0/0/0
[R8-Tunnel0/0/0]ip add 10.1.1.8 24
[R8-Tunnel0/0/0]tunnel-protocol gre
[R8-Tunnel0/0/0]source 172.16.0.8
[R8-Tunnel0/0/0]description 172.16.0.1
[R8]ip route-static 192.168.1.0 24 Tunnel 0/0/0
R1业务pingR8业务: