Hello everyone.
We have a 3750 stack connected to a 6513 with 10 gig SM fibers. We are seeing input, crc and some framing errors. We checked the fiber, and found it to be within the specs for 10 gig (as far as loss goes). When I drop this connection down to a 1gig SFP, errors no longer occur.
Can anyone offer up some troubleshooting tips for us? We have replaced the fiber patch cables at both ends, but no changes.
TIA.
6513 interface:
interface TenGigabitEthernet10/5
switchport
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1,58,59,211-213,1000-1005,1024-4094
switchport mode trunk
mls qos vlan-based
mls qos trust cos
end
#sh int t10/5
TenGigabitEthernet10/5 is up, line protocol is up (connected)
Hardware is C6k 10000Mb 802.3, address is 001a.6c9e.88cc (bia 001a.6c9e.88cc)
Description: xxxxxxxxx
MTU 1500 bytes, BW 10000000 Kbit, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 10Gb/s
input flow-control is off, output flow-control is off
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:01, output 00:00:22, output hang never
Last clearing of "show interface" counters 35w1d
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 11030000 bits/sec, 1154 packets/sec
5 minute output rate 1330000 bits/sec, 738 packets/sec
457959017 packets input, 633658513385 bytes, 0 no buffer
Received 684497 broadcasts (140445 multicasts)
0 runts, 0 giants, 0 throttles
49514 input errors, 48733 CRC, 663 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
0 input packets with dribble condition detected
255220827 packets output, 28351253516 bytes, 0 underruns
0 output errors, 0 collisions, 2 interface resets
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 PAUSE output
0 output buffer failures, 0 output buffers swapped out
3750 interface:
interface TenGigabitEthernet1/0/1
description 10Gig uplink
switchport trunk encapsulation dot1q
switchport mode trunk
srr-queue bandwidth share 10 10 60 20
queue-set 2
priority-queue out
mls qos trust cos
auto qos voip trust
spanning-tree portfast trunk
end
3750-E#sh int t1/0/1
TenGigabitEthernet1/0/1 is up, line protocol is up (connected)
Hardware is Ten Gigabit Ethernet, address is 001e.13a3.fa9d (bia 001e.13a3.fa9d)
Description: 10Gig uplink
MTU 1500 bytes, BW 10000000 Kbit, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive not set
Full-duplex, 10Gb/s, link type is auto, media type is 10GBase-LR
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, output 00:00:03, output hang never
Last clearing of "show interface" counters 23:18:19
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 995000 bits/sec, 699 packets/sec
5 minute output rate 11050000 bits/sec, 1128 packets/sec
50048832 packets input, 9184673945 bytes, 0 no buffer
Received 15590 broadcasts (675591 multicasts)
0 runts, 1 giants, 0 throttles
1574 input errors, 1393 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 675591 multicast, 0 pause input
0 input packets with dribble condition detected
84719410 packets output, 112546054109 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 PAUSE output
0 output buffer failures, 0 output buffers swapped out
