07-03-2015 07:08 AM - edited 03-08-2019 12:49 AM
We have a WS-C4928-10GE and it has output drops. I suspect a configuration issue and I believe it's related to how they have it setup.
However, I used to be able to run "show platform port-asic stats drop gx/x/x" on Cisco 3750 to see which queue was dropping.
The 4928 doesn't seem to support that command structure.
I also tried other commands such as show qos, show policy map interface, etc.
How do we find which queue is dropping packets and which ones are not receiving traffic?
Thanks
We are running cat4500-entservices-mz.150-2.SG2.bin.
They don't have any policy configured on the interface but they have this configured:
interface GigabitEthernet1/2
description pa01
no switchport
no ip address
logging event link-status
logging event trunk-status
qos trust dscp
snmp ifindex persist
tx-queue 1
bandwidth percent 30
tx-queue 2
bandwidth percent 30
tx-queue 3
bandwidth percent 30
priority high
tx-queue 4
bandwidth percent 10
channel-group 1 mode desirable
spanning-tree bpduguard disable
We also have this configured:
qos map dscp 26 34 48 56 to tx-queue 1
qos map dscp 0 10 to tx-queue 4
qos map cos 1 to dscp 10
qos map cos 2 to dscp 18
qos map cos 3 to dscp 26
qos map cos 4 to dscp 34
qos map cos 5 to dscp 46
GigabitEthernet1/2 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet Port, address is f0f7.5510.a44f (bia f0f7.5510.a44f)
Description: pa01
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
reliability 255/255, txload 2/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 1000Mb/s, link type is auto, media type is No Gbic
input flow-control is on, output flow-control is off
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:22, output never, output hang never
Last clearing of "show interface" counters 1w1d
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 83906
Solved! Go to Solution.
07-03-2015 08:46 AM
Doesn't it show as this then?
c4948-1#show interfaces counters detail | be Drop Port Tx-Drops-Queue-1 Tx-Drops-Queue-2 Tx-Drops-Queue-3 Tx-Drops-Queue-4 Gi1/1 0 0 0 0 Gi1/2 0 0 0 0 Gi1/3 0 0 0 0 Gi1/4 0 0 0 0 Gi1/5 0 0 0 0 [snip] Port Dbl-Drops-Queue-1 Dbl-Drops-Queue-2 Dbl-Drops-Queue-3 Dbl-Drops-Queue-4 Gi1/1 0 0 0 0 Gi1/2 0 0 0 0 Gi1/3 0 0 0 0 Gi1/4 0 0 0 0 Gi1/5 0 0 0 0
Regards
07-03-2015 08:06 AM
Hi,
did you try the following already?
sh mls qos int <interface> statistics
Regards,
Markus
07-03-2015 08:42 AM
I haven't tried this I believe but I'll try it and let you know. thanks
07-03-2015 09:25 AM
It doesn't support it.
07-03-2015 08:12 AM
On the Catalyst 4948 (which I believe is the same architecture as the 4928) it's as simple as show interface gi 1/2 counters detail.
If you want to look at the drops across any or several interfaces it's probably easier to use show interface counters detail and scroll through to the section with the queue drops.
Regards
07-03-2015 08:42 AM
This just shows the different counters but does not show which queue is dropping the packets but thanks.
07-03-2015 08:46 AM
Doesn't it show as this then?
c4948-1#show interfaces counters detail | be Drop Port Tx-Drops-Queue-1 Tx-Drops-Queue-2 Tx-Drops-Queue-3 Tx-Drops-Queue-4 Gi1/1 0 0 0 0 Gi1/2 0 0 0 0 Gi1/3 0 0 0 0 Gi1/4 0 0 0 0 Gi1/5 0 0 0 0 [snip] Port Dbl-Drops-Queue-1 Dbl-Drops-Queue-2 Dbl-Drops-Queue-3 Dbl-Drops-Queue-4 Gi1/1 0 0 0 0 Gi1/2 0 0 0 0 Gi1/3 0 0 0 0 Gi1/4 0 0 0 0 Gi1/5 0 0 0 0
Regards
07-03-2015 10:18 AM
Let me double check and get back to you. Thanks
07-03-2015 11:32 AM
I actually ran this before but overlooked it. Thank you very much and very appreciated!
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