GRE隧道配置

拓扑如下：

R1上的配置

Router>

Router>en

Router#conf t

Enter configuration commands, one per line.  End with CNTL/Z.

Router(config)#ho R1

R1(config)#int lo 0

R1(config-if)#ip add 1.1.1.1 255.255.255.0

R1(config-if)#exit

R1(config)#int fastEthernet 0/0

R1(config-if)#ip add 12.0.0.1 255.255.255.0

R1(config-if)#no shu

R1(config)#interface FastEthernet0/0

R1(config-if)#ip address 192.168.0.1 255.255.255.0

R1(config)#router eigrp 100

R1(config-router)#network 192.168.0.0

R1(config-router)#exit

R1(config)#exit

查看R1的路由表

R1#sho ip route

Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP

       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area

       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2

       E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP

       i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area

       * - candidate default, U - per-user static route, o - ODR

       P - periodic downloaded static route

Gateway of last resort is not set

     1.0.0.0/24 is subnetted, 1 subnets

C       1.1.1.0 is directly connected, Loopback0

     172.16.0.0/24 is subnetted, 1 subnets

D       172.16.0.0 [90/30720] via 192.168.0.2, 00:00:34, FastEthernet0/0

C    192.168.0.0/24 is directly connected, FastEthernet0/0

R1#

R1#conf t

R1(config)#interface tunnel 0

R1(config-if)#tunnel source f0/0

R1(config-if)#tunnel destination 172.16.0.3

R1(config-if)#ip add 10.0.0.1 255.255.255.0

Router(config)#ho R2

R2(config)#int fastEthernet 0/1

R2(config-if)#ip add 192.168.0.2 255.255.255.0

R2(config-if)#no shu

R2(config-if)#exit

R2(config)#int fastEthernet 0/0

R2(config-if)#ip add 172.16.0.2 255.255.255.0

R2(config)#

R2(config)#int lo 0

R2(config-if)#ip add 2.2.2.2 255.255.255.0

R2(config)#router eigrp 100

R2(config-router)#no auto-summary

R2(config-router)#network 192.168.0.0

R2(config-router)#net 172.16.0.0

R2(config-router)#exit

R2#sho ip route

     2.0.0.0/24 is subnetted, 1 subnets

C       2.2.2.0 is directly connected, Loopback0

C       172.16.0.0 is directly connected, FastEthernet0/0

C    192.168.0.0/24 is directly connected, FastEthernet0/1

Router>enable

Router#configure terminal

Router(config)#ho R3

R3(config)#interface FastEthernet0/1

R3(config-if)#ip address 172.16.0.3 255.255.255.0

R3(config-if)#

R3(config-if)#exit

R3(config-if)#no shutdown

R3(config)#int lo 0

R3(config-if)#ip add 3.3.3.3 255.255.255.0

R3(config)#router eigrp 100

R3(config-router)#net 172.16.0.0

R3(config-router)#exit

R3(config)#exit

R3#sho ip route

     3.0.0.0/24 is subnetted, 1 subnets

C       3.3.3.0 is directly connected, Loopback0

C       172.16.0.0 is directly connected, FastEthernet0/1

D    192.168.0.0/24 [90/30720] via 172.16.0.2, 00:00:33, FastEthernet0/1

R3(config)#int tunnel 0

R3(config-if)#tunnel source f0/1

R3(config-if)#tunnel destination 192.168.0.1

R3(config-if)#ip add 10.0.0.3 255.255.255.0

R3#ping 10.0.0.1

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 10.0.0.1, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 62/62/63 ms

配置EIGRPAS200 通过tunnel0建立邻居关系

R1(config)#router eigrp 200

R1(config-router)#net 10.0.0.0

R3(config)#router eigrp 200

R3(config-router)#net 10.0.0.0

在R1上查看邻接关系

R1#sho ip eigrp neighbors 200

IP-EIGRP neighbors for process 200

H   Address         Interface      Hold Uptime    SRTT   RTO   Q   Seq

                                   (sec)          (ms)        Cnt  Num

0   10.0.0.3        Tun0           11   00:00:16  40     1000  0   1