Hi ,
Can anybody explain below outputs taken from 3750 switch on which QoS is configured for priortizing Voice traffic.
sw1#sh mls qos maps dscp-output-q
Dscp-outputq-threshold map:
d1 :d2 0 1 2 3 4 5 6 7 8 9
------------------------------------------------------------
0 : 04-03 04-03 04-03 04-03 04-03 04-03 04-03 04-03 04-01 04-02
1 : 04-02 04-02 04-02 04-02 04-02 04-02 03-03 03-03 03-03 03-03
2 : 03-03 03-03 03-03 03-03 02-03 02-03 02-03 02-03 02-03 02-03
3 : 02-03 02-03 03-03 03-03 03-03 03-03 03-03 03-03 03-03 03-03
4 : 01-03 01-03 01-03 01-03 01-03 01-03 01-03 01-03 02-03 02-03
5 : 02-03 02-03 02-03 02-03 02-03 02-03 02-03 02-03 02-03 02-03
6 : 02-03 02-03 02-03 02-03
sw1#sh mls qos maps cos-output-q
Cos-outputq-threshold map:
cos: 0 1 2 3 4 5 6 7
------------------------------------
queue-threshold: 4-3 4-2 3-3 2-3 3-3 1-3 2-3 2-3
sw1#sh mls qos interface g1/0/1 queueing
GigabitEthernet1/0/1
Egress Priority Queue : enabled
Shaped queue weights (absolute) : 25 0 0 0
Shared queue weights : 25 25 25 25
The port bandwidth limit : 100 (Operational Bandwidth:100.0)
The port is mapped to qset : 1
sw1#sh run int g1/0/1
interface GigabitEthernet1/0/1
description <<connection to wr1>>
switchport trunk encapsulation dot1q
switchport mode trunk
priority-queue out
mls qos trust dscp
ip dhcp snooping trust
end
sw1#show platform port-asic stats drop gigabitEthernet 1/0/1
Interface Gi1/0/1 TxQueue Drop Statistics
Queue 0
Weight 0 Frames 0
Weight 1 Frames 0
Weight 2 Frames 6292 -----> reason for drops
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 0
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
sw1#show platform port-asic stats enqueue gigabitEthernet 1/0/1
Interface Gi1/0/1 TxQueue Enqueue Statistics
Queue 0
Weight 0 Frames 2
Weight 1 Frames 0
Weight 2 Frames 20548539
Queue 1
Weight 0 Frames 121832 -----> why so many frames in queue 1 ..what is the significance
Weight 1 Frames 743121
Weight 2 Frames 6612555 --- > are these frames are in queue to get forwarded..Noticing frames in Queue 3 also
Queue 2
Weight 0 Frames 0
Weight 1 Frames 0
Weight 2 Frames 14728
Queue 3
Weight 0 Frames 7849
Weight 1 Frames 6344
Weight 2 Frames 58654525
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
Thanks ,
M S K
Thanks ,
M S K
