Cisco N5K-M1600 - Expansion Module - 6 Ports Troubleshooting Manual page 65

Chapter 4 Troubleshooting QoS Issues
S e n d d o c u m e n t c o m m e n t s t o n e x u s 5 k - d o c f e e d b a c k @ c i s c o . c o m .
set cos 6
mtu 9216
class type network-qos class-default
mtu 9216
The configuration classifies the incoming voice traffic based on DSCP and marks the voice traffic to CoS
5. At the Nexus 2148 egress direction, the FEX assigns voice traffic to the priority queue.
The following is example output from the show queuing interface command for the Nexus 2148 with
the above configuration.
Example:
switch# sh queuing interface ethernet 199/1/1
Ethernet199/1/1 queuing information:
Input buffer allocation:
Qos-group: 0
frh: 3
drop-type: drop
cos: 0 1 2 3 4 6 7
xon
---------+---------+-----------
16640
Qos-group: 5
frh: 2
drop-type: no-drop
cos: 5
xon
---------+---------+-----------
8960
Queueing:
queue
------+------------+--------------+---------+----------+----
3
2
Buffer threshold: 271360 bytes
Queue limit: Disabled
Queue Statistics:
queue
------+---------------
3
2
Port Statistics:
tx queue drop
---------------
0
Priority-flow-control enabled: no
Flow-control status:
cos
-------+-----------+---------+---------+---------------
0
1
2
3
4
5
6
7
OL-25300-01
2 3 4 (shared)
xoff buffer-size
33280 56320
xoff buffer-size
19200 34560
qos-group cos
0 2 3 4 0 1 2 3 4 6
5 5
rx
241439087
0
qos-group rx pause
0 xon
2 xon
0 xon
0 xon
4 xon
5 xon
3 xon
n/a xon
priority bandwidth mtu
WRR 100
PRI 0
tx pause masked rx pause
xon xon
xon xon
xon xon
xon xon
xon xon
xon xon
xon xon
xon xon
Cisco Nexus 5000 Series Troubleshooting Guide
Improper Configurations
9280
1600
4-7