Interface resets on an eth interface?
What, if anything, are Interface Resets indicative of on an ethernet interface?
Usually, I see perhaps a couple on an interface whose counters haven't been reset for a long time. Now, I'm having sporadic but major problems with an c1812. It loses OSPF connections to it's neighbors, sometimes it seems it just loses the network connection altogether.
Initially, I just looked at whether the interface had gone down, CRC errors FCS etc, but no problem there. Later, I noticed that the "interface resets" counter in sh int increases at a rediculous rate. What info I can find online only refers to serial interfaces and I don't really understand what they mean anyway. One comment seemed to indicate that runts are somehow related to them, but I get no runts at at all.
sh int output for your enjoyment:
FastEthernet0 is up, line protocol is up
Hardware is PQ3_TSEC, address is 001f.9e8c.xxxx (bia 001f.9e8c.xxxx)
Internet address is 10.x.y.z/25
MTU 1500 bytes, BW 10000 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, 100BaseTX/FX
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 3000 bits/sec, 3 packets/sec
5 minute output rate 2000 bits/sec, 2 packets/sec
1011966 packets input, 367334058 bytes
Received 105294 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog
0 input packets with dribble condition detected
983881 packets output, 76858816 bytes, 0 underruns
0 output errors, 0 collisions, 9453 interface resets <---- Holy cow!
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier
0 output buffer failures, 0 output buffers swapped out
