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实验拓扑

低级错误

在配置隧道时,目标的单词是destination,我自动补全为description了,这个问题花了我40分钟

划分ip

AS2内骨干网,一个网段需要两个地址,主机位2位,掩码30
需要6个
172.16.0.000000 00 172.16.0.0/30
172.16.0.000001 00 172.16.0.4/30
172.16.0.000010 00 172.16.0.8/30
172.16.0.000011 00 172.16.0.12/30
172.16.0.000100 00 172.16.0.16/30
172.16.0.000101 00 172.16.0.20/30建立邻居地址 都是32为地址,注意不要地址冲突
172.16.1.2 32
172.16.1.3 32
172.16.1.4 32
172.16.1.5 32
172.16.1.6 32
172.16.1.7 32业务网段 没规定业务网段大小,那就24掩码了
172.16.2.0 24 R2
172.16.3.0 24 R3
172.16.4.0 24 R4
172.16.5.0 24 R5 
172.16.6.0 24 R6
172.16.7.0 24 R7

配置ospf

r2
ospf 1 router-id 2.2.2.2 area 0.0.0.0 network 172.16.0.0 0.0.0.3 network 172.16.0.20 0.0.0.3 network 172.16.1.2 0.0.0.0 
r3
ospf 1 router-id 3.3.3.3 area 0.0.0.0 network 172.16.0.0 0.0.0.3 network 172.16.0.4 0.0.0.3 network 172.16.1.3 0.0.0.0 
r4
ospf 1 router-id 4.4.4.4 area 0.0.0.0 network 172.16.0.4 0.0.0.3 network 172.16.0.8 0.0.0.3 network 172.16.1.4 0.0.0.0 
r5
ospf 1 router-id 5.5.5.5 area 0.0.0.0 network 172.16.0.16 0.0.0.3 network 172.16.0.20 0.0.0.3 network 172.16.1.5 0.0.0.0 
r6
ospf 1 router-id 6.6.6.6 area 0.0.0.0 network 172.16.0.12 0.0.0.3 network 172.16.0.16 0.0.0.3 network 172.16.1.6 0.0.0.0 
r7
ospf 1 router-id 7.7.7.7 default-route-advertisearea 0.0.0.0 network 172.16.0.8 0.0.0.3 network 172.16.0.12 0.0.0.3 network 172.16.1.7 0.0.0.0 

配置bgp

r1
bgp 1peer 12.1.1.2 as-number 2 #ipv4-family unicastundo synchronizationnetwork 1.1.1.1 255.255.255.255 peer 12.1.1.2 enable
r2 #联盟内需要全连接
bgp 64512confederation id 2confederation peer-as 64513peer 12.1.1.1 as-number 1 peer 172.16.0.22 as-number 64513 peer 172.16.1.3 as-number 64512 peer 172.16.1.3 connect-interface LoopBack0peer 172.16.1.4 as-number 64512 peer 172.16.1.4 connect-interface LoopBack0#ipv4-family unicastundo synchronizationpeer 12.1.1.1 enablepeer 172.16.0.22 enablepeer 172.16.0.22 next-hop-local peer 172.16.1.3 enablepeer 172.16.1.3 next-hop-local peer 172.16.1.4 enablepeer 172.16.1.4 next-hop-local 
r3
bgp 64512confederation id 2confederation peer-as 64513peer 172.16.1.2 as-number 64512 peer 172.16.1.2 connect-interface LoopBack0peer 172.16.1.4 as-number 64512 peer 172.16.1.4 connect-interface LoopBack0#ipv4-family unicastundo synchronizationpeer 172.16.1.2 enablepeer 172.16.1.4 enable
r4
bgp 64512confederation id 2confederation peer-as 64513peer 172.16.1.2 as-number 64512 peer 172.16.1.2 connect-interface LoopBack0peer 172.16.1.3 as-number 64512 peer 172.16.1.3 connect-interface LoopBack0#ipv4-family unicastundo synchronizationpeer 172.16.1.2 enablepeer 172.16.1.3 enabler5
bgp 64513confederation id 2confederation peer-as 64512peer 172.16.0.21 as-number 64512 peer 172.16.1.6 as-number 64513 peer 172.16.1.6 connect-interface LoopBack0peer 172.16.1.7 as-number 64513 peer 172.16.1.7 connect-interface LoopBack0#ipv4-family unicastundo synchronizationpeer 172.16.0.21 enablepeer 172.16.1.6 enablepeer 172.16.1.6 next-hop-local peer 172.16.1.7 enablepeer 172.16.1.7 next-hop-local 
r6
bgp 64513confederation id 2confederation peer-as 64512peer 172.16.1.5 as-number 64513 peer 172.16.1.5 connect-interface LoopBack0peer 172.16.1.7 as-number 64513 peer 172.16.1.7 connect-interface LoopBack0#ipv4-family unicastundo synchronizationnetwork 172.16.6.0 255.255.255.0 peer 172.16.1.5 enablepeer 172.16.1.7 enable
r7
bgp 64513confederation id 2confederation peer-as 64512peer 34.1.1.2 as-number 3 peer 172.16.1.5 as-number 64513 peer 172.16.1.5 connect-interface LoopBack0peer 172.16.1.6 as-number 64513 peer 172.16.1.6 connect-interface LoopBack0#ipv4-family unicastundo synchronizationpeer 34.1.1.2 enablepeer 172.16.1.5 enablepeer 172.16.1.5 next-hop-local peer 172.16.1.6 enablepeer 172.16.1.6 next-hop-local 
r8
bgp 3peer 34.1.1.1 as-number 2 #ipv4-family unicastundo synchronizationnetwork 8.8.8.8 255.255.255.255 peer 34.1.1.1 enable

隧道

r1
interface Tunnel0/0/0ip address 192.168.3.1 255.255.255.0 tunnel-protocol gresource 1.1.1.1destination 8.8.8.8
r8
interface Tunnel0/0/0ip address 192.168.3.2 255.255.255.0 tunnel-protocol gresource 8.8.8.8destination 1.1.1.1

配置rip,静态也行,因为开头的低级错误我把静态取消了换了rip,结果和路由没关系

r1
rip 1undo summaryversion 2network 192.168.1.0network 192.168.3.0
r8
rip 1undo summaryversion 2network 192.168.3.0network 192.168.2.0

通!

ping一下r6的业务网段