CCIE Pursuit Blog

January 26, 2008

Internetwork Expert Volume III: Lab 4 – Section 1

Troubleshooting – 2 Points

There are supposedly two faults in the initial configurations.  There are at least four faults and as many as six – depending on how you count them.  I’ll just list the two (I counted this as four because there were four misaddressed IP addresses) that IE shows in the solution guide.  I will point out the other two in the sections that I discovered them.

1) VLAN 3 is configured with the wrong subnet (sw3 and r3)

r3#sh ip int br | i net0/1
Interface                  IP-Address      OK? Method Status                Protocol
FastEthernet0/1            152.1.39.3      YES manual up                    up

r3(config)#int fa0/1
r3(config-if)#ip add 152.1.3.3 255.255.255.0

sw3#sh ip int br | e ass
Interface              IP-Address      OK? Method Status                Protocol
Vlan39                 152.1.39.9      YES manual down                  down

sw3(config)#no int vlan39
sw3(config)#no vlan39
sw3(config)#vlan 3
sw3(config)#int vlan 3
sw3(config-if)#ip add 152.1.3.9 255.255.255.0

2) VLAN 5 is configured with the wrong subnet (sw4 and r5)

r5#sh ip int br | i net0/1
FastEthernet0/1            152.1.105.5     YES manual up                    up

r5(config)#int fa0/1
r5(config-if)#ip add 152.1.5.5 255.255.255.0

sw4#sh ip int br | e ass
Interface              IP-Address      OK? Method Status                Protocol
Vlan105                152.1.105.10    YES manual down                  down

sw3(config)#no int vlan105
sw3(config)#no vlan 105
sw3(config)#vlan 5
sw3(config)#int vlan 5
sw3(config-if)#ip add 152.1.3.9 255.255.255.0

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