Hello!
I have a issue with my C2960S (2 pieces stacked). There's a huge amount of total drops on high load ports.
Example:
sw1-tix#show interfaces gi1/0/10
GigabitEthernet1/0/10 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet, address is a456.309b.1f8a (bia a456.309b.1f8a)
Description: webcache.tix:eth0
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
reliability 255/255, txload 5/255, rxload 18/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 1000Mb/s, media type is 10/100/1000BaseTX
Media-type configured as connector
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output 00:00:01, output hang never
Last clearing of "show interface" counters 3d01h
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 190169
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 72305000 bits/sec, 6748 packets/sec
5 minute output rate 20782000 bits/sec, 5426 packets/sec
1221960223 packets input, 1628563836169 bytes, 0 no buffer
Received 528 broadcasts (0 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
979698245 packets output, 475525598184 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
sw1-tix#show platform port-asic stats drop Gi1/0/10
Interface Gi1/0/10 TxQueue Drop Statistics
Queue 0
Weight 0 Frames 0
Weight 1 Frames 0
Weight 2 Frames 0
Queue 1
Weight 0 Frames 0
Weight 1 Frames 0
Weight 2 Frames 0
Queue 2
Weight 0 Frames 0
Weight 1 Frames 0
Weight 2 Frames 0
Queue 3
Weight 0 Frames 0
Weight 1 Frames 0
Weight 2 Frames 10369171
Queue 4
Weight 0 Frames 0
Weight 1 Frames 0
Weight 2 Frames 0
Queue 5
Weight 0 Frames 0
Weight 1 Frames 0
Weight 2 Frames 0
Queue 6
Weight 0 Frames 0
Weight 1 Frames 0
Weight 2 Frames 0
Queue 7
Weight 0 Frames 0
Weight 1 Frames 0
Weight 2 Frames 0
There are multiple ports having the same issue that have huge bandwidth load. There are 15 ports that drop packets on both SW1 & SW2.
QoS is disabled.
sw1-tix#show mls qos
QoS is disabled
QoS ip packet dscp rewrite is enabled
Queueing:
sw1-tix#show queueing interface GigabitEthernet 1/0/10
Interface GigabitEthernet1/0/10 queueing strategy: none
What more should I debug? Having a huge problem here.
