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Troubleshooting Ethernet Problems
267
Internet address is 172.16.60.1/24
MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec, rely 255/
255, load 1/255
Encapsulation ARPA, loopback not set, keepalive set (10
sec)
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:41:42, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Queueing strategy: fifo
Output queue 0/40, 0 drops; input queue 0/75, 0 drops
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
147 packets input, 9568 bytes, 0 no buffer
Received 5 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
2009 packets output, 162455 bytes, 0 underruns
0 output errors, 0 collisions, 2 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_C#
Everything looks good, except for the fact that no traffic is being sent
across the interface. That can be another indication that there is a problem
between the router and Host Z. Now, look at the ARP table:
Router_C>show arp
Protocol Address Age (min) Hardware Addr Type Interface
Internet 172.16.60.1 - 0010.7bd9.2881 ARPA Ethernet0/1
Internet 172.16.50.2 - 0010.7bd9.2880 ARPA Ethernet0/0
Internet 172.16.50.1 0 0000.0c09.99cc ARPA Ethernet0/0
Router_C>
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