Hi everyone,
I have two new Catalyst 4506 connected among them with fiber-optic GBIC (1000Base-SX):
4506_A gi1/1 <--- 1 Gb ---> 4506_B gi1/1
4506_A gi2/1 <--- 1 Gb ---> 4506_B gi2/1
4506_A gi2/2 <--- 1 Gb ---> 4506_B gi2/2
4506_A gi3/1 <--- 1 Gb ---> 4506_B gi3/1
Switchs have default built configuration, we have not configured nothing still, only connect two catalyst with SC-SC fiber optic cables.
We have observed "input error" on each interface (gi1/1, gi2/1, gi2/2, gi3/1) but don´t runts, giants, throttles, CRC, frame, others error, only "input error".
4506-A#sh int gi1/1
GigabitEthernet1/1 is up, line protocol is up (connected)
...
5454707 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 input packets with dribble condition detected
...
In the other end, the counter show "0 input error" on some those interfaces and "input error" on others.
Has anyone an explanation for this?
===================================================
4506-A#sh int counter error
Port CrcAlign-Err Dropped-Bad-Pkts Collisions Symbol-Err
Gi1/1 0 0 0 5786462
Gi2/1 0 0 0 2973045
Gi2/2 0 0 0 3593205
Gi3/1 0 0 0 3114570
...
4506-A#sh int gi1/1
GigabitEthernet1/1 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet Port, address is 000e.836e.9440 (bia 000e.836e.9440)
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 1000Mb/s, link type is auto, media type is SX
output flow-control is off, input flow-control is on
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:07:50, output never, output hang never
Last clearing of "show interface" counters never
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 0 bits/sec, 0 packets/sec
843558 packets input, 307250165 bytes, 0 no buffer
Received 333730 broadcasts (17763 multicast)
0 runts, 0 giants, 0 throttles
5454707 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 input packets with dribble condition detected
12215 packets output, 1598601 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
4506-A#sh int gi2/1
GigabitEthernet2/1 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet Port, address is 000b.5f3c.99dc (bia 000b.5f3c.99dc)
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 1000Mb/s, link type is auto, media type is SX
output flow-control is off, input flow-control is on
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:19, output never, output hang never
Last clearing of "show interface" counters never
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 59000 bits/sec, 25 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
1090577 packets input, 415869011 bytes, 0 no buffer
Received 426976 broadcasts (24635 multicast)
0 runts, 0 giants, 0 throttles
2973045 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 input packets with dribble condition detected
6776 packets output, 662071 bytes, 0 underruns
...
