We're seeing input errors (CRC) on 3548XL switch ports connected to 7500
routers with PA-FE-TX. No errors are visible on the 7500 side. We have
tried switching cables, 3548XL switches, and PA-FE-TX on the 7500s. And
we still get these errors. The amount is low, about 3e-4 - but higher
than we would expect. Typical view:
FastEthernet0/43 is up, line protocol is up
Hardware is Fast Ethernet, address is 0001.9639.df2b (bia 0001.9639.df2b)
MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 3/255
Encapsulation ARPA, loopback not set
Keepalive not set
Full-duplex, 100Mb/s, 100BaseTX/FX
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:54, output 00:00:00, output hang never
Last clearing of "show interface" counters 23:26:33
Queueing strategy: fifo
Output queue 0/40, 0 drops; input queue 0/75, 0 drops
30 second input rate 1478000 bits/sec, 388 packets/sec
30 second output rate 337000 bits/sec, 319 packets/sec
29933559 packets input, 2587487178 bytes
Received 105393 broadcasts, 0 runts, 0 giants, 0 throttles
8435 input errors, 8435 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 72052 multicast
0 input packets with dribble condition detected
26693614 packets output, 3845108664 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
The switches are running 12.0(5.1)XP or 12.0(5)XU, the routers 12.0(10)S.
If we change the switches to for instance Baystack 350, the errors stop.
I'm just wondering if I'm seeing real errors, or if this is a known bug
where the switches are counting something else as CRC errors.
Anybody else seen this?
Steinar Haug, Nethelp consulting, sthaug@nethelp.no
This archive was generated by hypermail 2b29 : Sun Aug 04 2002 - 04:12:13 EDT