求大神们帮忙看下到底是什么问题,这是要配置gre隧道的拓扑,首先我在2个内网的边界路由器已经做好nat映射,而公网路由器我仅仅只是配了IP地址,然后接着配置interface-Tunnel口的IP地址,配置好协议是GRE、源IP、目标IP,2边对称源IP目标IP,但是2个interface-tunnel口的数据链路层就是up不起来,一直是down,下面是我做nat配置和gre的配置详情: 下面是公网路由器上的IP表
公网IP表
R1的NAT配置 [R1-GigabitEthernet0/0/0]ip add 10.1.1.254 24 [R1-Serial1/0/0]ipadd 61.0.0.2 30 [R1]acl 2000 [R1-acl-basic-2000]rule permit source10.1.1.0 0.0.0.255 [R1]int s1/0/0 [R1-Serial1/0/0]natoutbound 2000 [R1]ip route-static0.0.0.0 0 61.0.0.1 R3的NAT配置 [R3-GigabitEthernet0/0/0]ip add 10.2.2.254 24 [R3-Serial1/0/0]ip add 202.96.134.2 30 [R3]acl 2000 [R3-acl-basic-2000]rule permit source10.2.2.0 0.0.0.255 [R3-Serial1/0/0]natoutbound 2000 [R3]ip route-static0.0.0.0 0 202.96.134.1 Nat我就是这样配置的,接着配置tunnel口就出问题了 R1的配置 [R1-Tunnel0/0/0]ipaddress 10.13.13.1 24 [R1-Tunnel0/0/0]tunnel-protocolgre [R1-Tunnel0/0/0]source61.0.0.2 [R1-Tunnel0/0/0]description202.96.134.2 [R1]ip route-static 10.2.2.0 24 Tunnel 0/0/0 R2的配置 [R3-Tunnel0/0/1]ip address 10.13.13.2 24 [R3-Tunnel0/0/1]tunnel-protocolgre [R3-Tunnel0/0/1]source202.96.134.2 [R3-Tunnel0/0/1]description61.0.0.2 [R3]ip route-static 10.1.1.0 24 Tunnel 0/0/1 [R1]disp interface Tunnel 0/0/0 Tunnel0/0/0 current state : UP Line protocol currentstate : DOWN
这边数据链路层一直都是down 求教哪里错了
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