Xample, 3 qos example – QTECH QSW-2800 Инструкция по настройке User Manual

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159

7. Show configuration of QoS

Command

Explanation

Admin Mode

show mls qos maps [cos-intp | dscp-intp]

Display the configuration of QoS mapping.

show class-map [<class-map-name>]

Display the classified map information of

QoS.

show policy-map [<policy-map-name>]

Display the policy map information of QoS.

show mls qos {interface [<interface-id>]

[policy | queuing] | vlan <vlan-id>}

Display QoS configuration information on a

port.

19.3 QoS Example

Example 1:

Enable QoS function, change the queue out weight of port to 1:1:2:2, set it in trust CoS mode

and set the default CoS value of the port to 5.

The configuration steps are listed below:

Switch#config

Switch(config)#mls qos queue weight 1 1 2 2

Switch(Config-If-Ethernet1/1)#mls qos cos 5

Configuration result:

When QoS enabled in Global Mode, the egress queue bandwidth proportion of all ports is

1:1:2:2. When packets with CoS value coming in through port, it will be map to the queue out

according to the CoS value, CoS value 0 to 7 correspond to queue out 0, 0, 1, 1, 2, 2, 3, 3

respectively. If the incoming packet without CoS value, it is default to 5 and will be put in queue

2.

Example 2:

In port ethernet1/2, set the bandwidth for packets from segment 192.168.1.0 to 10 Mb/s, with a

burst value of 4 MB, all packets exceed this bandwidth setting will be dropped.

The configuration steps are listed below:

Switch#config

Switch(config)#access-list 1 permit 192.168.1.0 0.0.0.255

Switch(config)#class-map c1

Switch(Config-ClassMap-c1)#match access-group 1

Switch(Config-ClassMap-c1)#exit

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