From: Xiaobo Zhu (xiaobo@zhu.net)
Date: Tue Dec 23 2008 - 04:07:37 ARST
Hi all,
When I ping the loopback 0 on R5 from R1, output like ".!.!. "
According to the following scenario, the way is unique, so how should this
happen.
Here is the scenario, the last part of ip address is asigned the same as the
number in the router's name.
1.1.1.1(R1)
192.168.12.0/24(R2)192.168.23.0/24(R3)192.168.34.0/24(R4)192.168.45.0/24(R5)5.5.5.5
And here comes the route table.
---------------------------------------------------
R1#show ip route
Gateway of last resort is 192.168.12.2 to network 0.0.0.0
C 192.168.12.0/24 is directly connected, Serial1/2
1.0.0.0/24 is subnetted, 1 subnets
C 1.1.1.0 is directly connected, Loopback0
5.0.0.0/24 is subnetted, 1 subnets
B 5.5.5.0 [20/0] via 192.168.12.2, 00:31:55
S* 0.0.0.0/0 [1/0] via 192.168.12.2
R2#show ip route
C 192.168.12.0/24 is directly connected, Serial1/3
1.0.0.0/24 is subnetted, 1 subnets
B 1.1.1.0 [20/0] via 192.168.12.1, 00:31:44
O 192.168.45.0/24 [110/192] via 192.168.23.3, 00:34:08, Serial1/2
5.0.0.0/24 is subnetted, 1 subnets
O E2 5.5.5.0 [110/1] via 192.168.23.3, 00:34:08, Serial1/2
C 192.168.23.0/24 is directly connected, Serial1/2
O 192.168.34.0/24 [110/128] via 192.168.23.3, 00:34:08, Serial1/2
R3#show ip route
O 192.168.12.0/24 [110/128] via 192.168.23.2, 00:34:33, Serial1/3
1.0.0.0/24 is subnetted, 1 subnets
O E2 1.1.1.0 [110/1] via 192.168.23.2, 00:32:09, Serial1/3
O 192.168.45.0/24 [110/128] via 192.168.34.4, 00:34:33, Serial1/2
5.0.0.0/24 is subnetted, 1 subnets
O E2 5.5.5.0 [110/1] via 192.168.34.4, 00:34:34, Serial1/2
C 192.168.23.0/24 is directly connected, Serial1/3
C 192.168.34.0/24 is directly connected, Serial1/2
R4#show ip route
O 192.168.12.0/24 [110/192] via 192.168.34.3, 00:34:59, Serial1/3
1.0.0.0/24 is subnetted, 1 subnets
O E2 1.1.1.0 [110/1] via 192.168.34.3, 00:32:35, Serial1/3
C 192.168.45.0/24 is directly connected, Serial1/2
5.0.0.0/24 is subnetted, 1 subnets
B 5.5.5.0 [20/0] via 192.168.45.5, 00:54:08
O 192.168.23.0/24 [110/128] via 192.168.34.3, 00:35:00, Serial1/3
C 192.168.34.0/24 is directly connected, Serial1/3
R5#show ip route
1.0.0.0/24 is subnetted, 1 subnets
B 1.1.1.0 [20/0] via 192.168.45.4, 00:32:58
C 192.168.45.0/24 is directly connected, Serial1/3
5.0.0.0/24 is subnetted, 1 subnets
C 5.5.5.0 is directly connected, Loopback0
S* 0.0.0.0/0 [1/0] via 192.168.45.4
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