I have an interface on a 4507 switch that was referred to me for the “LAST input/output” counters on an interface not updating even though it is passing traffic. I realize that those counters will only increment for process switched traffic not hardware switched traffic. The ouput of a "show interface fa3/25 switching" only indicates packets incrementing for the "process" path, this means that my last input/output should be populated correct? Also curious about the other paths listed in this output and if the "Fast" counters are meant to increment for hardware switched packets. Output below, thanks for the help.
Switch>sh int fa3/25
FastEthernet3/25 is up, line protocol is up (connected)
Hardware is Fast Ethernet Port, address is *****
Description: ******
MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 100Mb/s, media type is RJ45
input flow-control is unsupported output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output never, output hang never
Last clearing of "show interface" counters 1y1w
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 5000 bits/sec, 2 packets/sec
29197604 packets input, 13967216316 bytes, 0 no buffer
Received 1843003 broadcasts (1818787 multicast)
0 runts, 0 giants, 0 throttles
5 input errors, 5 CRC, 0 frame, 0 overrun, 0 ignored
0 input packets with dribble condition detected
93655138 packets output, 28989471131 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
Switch>sh int fa3/25 switching
FastEthernet3/25 ******
Throttle count 0
Drops RP 0 SP 0
SPD Flushes Fast 0 SSE 0
SPD Aggress Fast 0
SPD Priority Inputs 0 Drops 0
Protocol Path Pkts In Chars In Pkts Out Chars Out
Other Process 0 0 7519436 601554880
Cache misses 0
Fast 0 0 0 0
Auton/SSE 0 0 0 0
Spanning Tree Process 0 0 56407520 3384451200
Cache misses 0
Fast 0 0 0 0
Auton/SSE 0 0 0 0
CDP Process 0 0 1879919 870402497
Cache misses 0
Fast 0 0 0 0
Auton/SSE 0 0 0 0
