I would to get some info for overutilised trunk connection.
wondering what could be the root cause for it.
I am seeing multiple frame drops as well.
Other trunks for this dist switch with same configs are running fine wihtout no problems.
Cabling/ports have been verified and there are working fine.
Here are the configs
swi#sh int g3/1
GigabitEthernet3/1 is up, line protocol is up (connected)
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
reliability 255/255, txload 92/255, rxload 251/255 >>>>>>> overloaded
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 1000Mb/s, media type is SX
input flow-control is off, output flow-control is off
Clock mode is auto
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:30, output 00:00:23, output hang never
Last clearing of "show interface" counters 1d06h
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 236787 >>>>>>>>>
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 399471000 bits/sec, 33056 packets/sec
5 minute output rate 11094000 bits/sec, 17308 packets/sec
1236950457 packets input, 1356131695808 bytes, 0 no buffer
Received 1372870 broadcasts (557943 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
0 input packets with dribble condition detected
2753921200 packets output, 3554360519972 bytes, 0 underruns
swi#sh run int g3/1
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1,6,100-105,112,122,125,301,391,628,850-855
switchport trunk allowed vlan add 860-863,868,870-872,874-876,878,885,886,910
switchport trunk allowed vlan add 912,916-918,920
switchport mode trunk
no ip address
logging event link-status
mls qos trust dscp
Anyone able to identify what could be the root cause?
Appreciate anyone's contributions. Thanks!
Here is the trunk that is working without problem, just for comparison:
swi#sh int g3/2
GigabitEthernet3/2 is up, line protocol is up (connected)
reliability 255/255, txload 1/255, rxload 34/255 >>>load is ok
Last input 00:00:54, output 00:00:34, output hang never
Last clearing of "show interface" counters 1d08h
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0 >>>no drops
5 minute input rate 161000 bits/sec, 103 packets/sec
5 minute output rate 606000 bits/sec, 251 packets/sec
3113182770 packets input, 4675445599698 bytes, 0 no buffer
Received 648272 broadcasts (427406 multicasts)
719399809 packets output, 308050655285 bytes, 0 underruns
swi#sh run int g3/2
Though it may sound strange, you might be experiencing some sort of loop here. This may be either a routing loop or an STP loop (most likely).
Please refer to the URL below to verify and troubleshoot:
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