CCNP(ISCW)实验：配置GRE隧道

CCNP(ISCW)实验：配置GRE隧道

May 13 15:18:07.431: %LINEPROTO-5-UPDOWN: Line protocol on Interface Tunnel1, changed state to upMay 13 15:18:07.459: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 11: Neighbor 10.0.0.2 (Tunnel1) is up: new adjacency//从上面两句消息中，我们可以看到tunnel up了第四步：测试，我们只在R1上进行测试R1# sh ip route Codes: C - connected, S - static, R - RIP, M - mobile, B - BGPD - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2E1 - OSPF external type 1, E2 - OSPF external type 2i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2ia - IS-IS inter area, * - candidate default, U - per-user static routeo - ODR, P - periodic downloaded static route

Gateway of last resort is not set

1.0.0.0/24 is subnetted, 1 subnetsC 1.1.1.0 is directly connected, Loopback03.0.0.0/24 is subnetted, 1 subnetsD 3.3.3.0 [90/297372416] via 10.0.0.2, 00:21:00, Tunnel1 //下一跳去10.0.0.223.0.0.0/24 is subnetted, 1 subnetsD 23.0.0.0 [90/30720] via 12.0.0.2, 00:29:41, FastEthernet0/010.0.0.0/24 is subnetted, 1 subnetsC 10.0.0.0 is directly connected, Tunnel112.0.0.0/24 is subnetted, 1 subnetsC 12.0.0.0 is directly connected, FastEthernet0/0

R1#traceroute 3.3.3.3 so 1.1.1.1

Type escape sequence to abort.Tracing the route to 3.3.3.3

1 10.0.0.2 104 msec * 84 msec//这里我们可以看到从隧道里通过

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