Configuring Congestion Management 689

Configuring Custom Queuing (CQ)

Configure the queue length of the

qos pql pql-indexqueue { top

priority-list queuing

middle normal bottom }

 

queue-length queue-length

 

 

Recover the default value of the priority

undo qos pql pql-indexqueue { top

queue length

middle normal bottom }

 

queue-length

 

 

queue-lengthis the queues lengths of the 4 priority levels. They range 1 to 1024 packets.

The default length of each priority queue is shown in the following table:

Table 727 Default Length Value of the Priority Queue

Queue

Length

 

 

top

20

 

 

middle

40

 

 

normal

60

 

 

bottom

80

 

 

Displaying and debugging the priority queue

Table 728 Display and Debug the Priority Queue

Operation

Command

 

 

Display the priority queue configuration

display qos pql [ interface type

conditions and statistic information of the

number ]

interface

 

 

 

Display the content of the priority list

display qos pql

 

 

Custom queuing configuration includes:

Configuring custom-list queuing

Applying the custom-list queuing group to the interface

Configuring the queue length of the custom-list queuing

Configuring the number of the continuously transmitted bytes of the custom queue

Displaying and debugging the custom-list queue

Configuring custom-list queuing

Custom queuing includes up to 16 groups (the value range of cql-indexis 1 to 16), each of which specifies which types of data packets are input to each queue, the lengths of various queues, and the number of bytes that can be continuously transmitted by polling every queue. Every time the packets are transmitted, the packets in queues 1 to 16 are transmitted sequentially, and the number of the transmitted bytes for every transmission is not less than the number of the specified bytes in this queue, until this queue is empty.

Multiple custom queues can be configured, and the data packet will be matched by the system according to the specified sequence order in the policy list. If it is found that the data packet is matched with a policy, the entire searching process comes to an end.

The custom queue may be configured according to the following methods:

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3Com 10014299 Displaying and debugging the priority queue, Configuring custom-list queuing, Configuring Custom Queuing CQ