I am trying to decide how recently an interface has been used, if at all. "Show int" says, "Last input never, output 1w 3d", but the input counts are all greater than zero. The link of course is down. How does this happen? Or am I misinterpreting what "Last input never, output never" means?
> show int fa0/5
FastEthernet0/5 is down, line protocol is down
Hardware is Fast Ethernet, address is 0004.27cd.4345 (bia 0004.27cd.4345)
MTU 1500 bytes, BW 0 Kbit, DLY 0 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive not set
Auto-duplex , Auto Speed , 100BaseTX/FX
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output 1w3d, 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
693231 packets input, 65801676 bytes
Received 5831 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 5056 multicast
0 input packets with dribble condition detected
928808 packets output, 552742079 bytes, 0 underruns
0 output errors, 0 collisions, 1 interface resets
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier
0 output buffer failures, 0 output buffers swapped out
Number of hours, minutes, and seconds since the last packet was
successfully received by the interface and processed locally on the
router. This field is useful for detecting when a dead interface failed.
Note This field is not updated by fast-switched traffic.
on the c4500 we have the "sh interfaces link in CLI"...