Cisco Catalyst 3550

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Catalyst 3550 Multilayer Switch Command Reference
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Chapter 2 Catalyst 3550 Switch Cisco IOS Commands
show mls qos interface
trust state: not trusted
trust mode: trust cos
COS override: dis
default COS: 0
DSCP Mutation Map: Default DSCP Mutation Map
trust device: cisco-phone
This is an example of output from the show mls qos interface gigabitethernet0/1 buffers command:
Switch> show mls qos interface gigabitethernet0/1 buffers
GigabitEthernet0/1
Notify Q depth:
qid-size
1 - 25
2 - 25
3 - 25
4 - 25
qid WRED thresh1 thresh2
1 dis 100 100
2 dis 100 100
3 dis 100 100
4 dis 100 100
In the preceding display, the qid-size section shows the weight (the amount of space allocated to each
queue) as configured by the wrr-queue queue-limit interface configuration command. The next section
of the display shows the settings of the tail-drop thresholds for all four queues. The WRED column
shows that it is disabled, which means that tail drop is in effect. Tail-drop thresholds are configured by
using the wrr-queue threshold interface configuration command.
This is an example of output from the show mls qos interface fastethernet0/1 buffers command:
Switch> show mls qos interface fastethernet0/1 buffers
FastEthernet0/1
Minimum reserve buffer size:
100 100 100 100 100 100 100 100
Minimum reserve buffer level select:
4 2 5 7
This sample shows that the buffer size for all minimum-reserve levels is set to 100 packets. The last line
of the display shows that queue 1 selects minimum-reserve level 4, queue 2 selects minimum-reserve
level 2, queue 3 selects minimum-reserve level 5, and queue 4 selects minimum-reserve level 7.
This is an example of output from the show mls qos interface gigabitethernet0/1 queueing command:
Switch> show mls qos interface gigabitethernet0/1 queueing
GigabitEthernet0/1
Ingress expedite queue: dis
Egress expedite queue: ena
wrr bandwidth weights:
qid-weights
1 - 25
2 - 25
3 - 25
Dscp-threshold map:
d1 : d2 0 1 2 3 4 5 6 7 8 9
---------------------------------------
0 : 01 01 01 01 01 01 01 01 01 01
1 : 01 01 01 01 01 01 01 01 01 01
2 : 01 01 01 01 01 01 01 01 01 01
3 : 01 01 01 01 01 01 01 01 01 01
4 : 01 01 01 01 01 01 01 01 01 01
5 : 01 01 01 01 01 01 01 01 01 01
6 : 01 01 01 01
Cos-queue map: