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Chapter 5
Applying Cisco's Diagnostic Tools
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored,
0 abort
0 input packets with dribble condition detected
17820 packets output, 14352560 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier
0 output buffer failures, 0 output buffers swapped
out
Router_A#
From what you can see from the interface outputs, all interfaces are work-
ing properly. The changes made were effective, and they did not cause other
network problems.
The final step is to document what was done:
Added 172.16.10.1/24 to Ethernet 0/0.
Left 172.16.20.5/30 on Serial 0/0.
Changed administrative status for interface Serial 0/0 with the no
shutdown
command.
Changed the IP address for interface Ethernet 0/1 from 172.16.20.5/
30
to 172.16.30.1/24.
All of the necessary steps were taken to solve the observed problems. The
first step was to record observations. Once the observations were made, a
problem statement was written. Based on the problem statement, an action
plan was devised to resolve the problems. After the first changes were made,
interface Ethernet 0/0 came up. You saw that the router would not allow
Serial 0/0 to be removed from administrative shutdown due to a duplicate IP
address. The address conflicted with an IP address assigned to Ethernet 0/1.
A new address was assigned to Ethernet 0/1, and Serial 0/0 was changed to
an active state.
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