关于EBGP的问题
这个图~起完BGP以后为什么在R3上PING不通R1的LOOKBACK口?
EBGP都是用直连接口,没有用LOOKBACK口做跟新源,R3上能学到R1的LOOKBACK口的路由,R1也能学到R3的,
R1的路由表:
Gateway of last resort is not set
1.0.0.0/24 is subnetted, 4 subnets
C 1.1.0.0 is directly connected, Loopback0
C 1.1.1.0 is directly connected, Loopback1
B 1.1.2.0 via 12.12.12.2, 00:07:56
B 1.1.3.0 via 12.12.12.2, 00:07:56
12.0.0.0/30 is subnetted, 1 subnets
C 12.12.12.0 is directly connected, Serial1/1
R2路由表:
Gateway of last resort is not set
1.0.0.0/24 is subnetted, 4 subnets
B 1.1.0.0 via 12.12.12.1, 00:05:06
B 1.1.1.0 via 12.12.12.1, 00:05:06
B 1.1.2.0 via 23.23.23.2, 00:00:19
B 1.1.3.0 via 23.23.23.2, 00:00:19
23.0.0.0/30 is subnetted, 1 subnets
C 23.23.23.0 is directly connected, Serial1/1
24.0.0.0/30 is subnetted, 1 subnets
C 24.24.24.0 is directly connected, Serial1/2
12.0.0.0/30 is subnetted, 1 subnets
C 12.12.12.0 is directly connected, Serial1/0
R3路由表:
Gateway of last resort is not set
1.0.0.0/24 is subnetted, 4 subnets
B 1.1.0.0 via 23.23.23.1, 00:08:36
B 1.1.1.0 via 23.23.23.1, 00:08:36
C 1.1.2.0 is directly connected, Loopback0
C 1.1.3.0 is directly connected, Loopback1
23.0.0.0/30 is subnetted, 1 subnets
C 23.23.23.0 is directly connected, Serial1/0 你要用扩展ping
R3#ping 1.1.0.1 source lo0
因为默认,ping 1.1.0.1 ,源IP是出口的IP地址,即是23.23.23.3,而R1路由表中没有到23.23.23.0/24的路由,所以,ping不通! 恩~~用扩展PING的话就通了~~~ 111111111111111111111111 4444444444 55555555555555555 6666666666666666 99999999999999999999999 飘过~~~顺便刷个金币 不错。今天我到此一逛,望回访!
我顶!
不错啊,
好啊,嘿嘿!
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