3Com 10014303 User Manual

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configured with a maximum bandwidth, the system will assign the class an individual

queue, called the default queue.

Theoretically, each class can be configured with bandwidth of any size, but generally,

the priority classes can occupy 70% of the total bandwidth, and other ordinary classes

and the default class occupy less than 10%. It should be noted that the total

bandwidth assigned to each class and the RTP priority queue should not be larger

than the available bandwidth (the maximum bandwidth of the interface multiplied by

the percentage of the reserved bandwidth).

Please perform the following configurations in policy-class view.

Table 1-14 Configure assured-forwarding and the minimum bandwidth

Operation

Command

Configure assured-forwarding for an
ordinary class or default class and
configure the minimum bandwidth for them

af bandwidth { bandwidth | pct percentage }

Delete the assured-forwarding

undo af

Configure expedited-forwarding for priority
class and configure the maximum
bandwidth and CBS for it

ef bandwidth bandwidth [ cbs size ]

Delete expedited-forwarding

undo ef

This function can only be applied on the outbound direction.

Note:

Priority classes must be configured with absolute bandwidth, while ordinary classes and the default class
can be configured with relative bandwidth (in percentage) or absolute bandwidth.

Configure fair queue for the default class

Perform the following configurations in the policy-class view.

Table 1-15 Configure fair queue for the default class

Operation

Command

Configure WFQ for the default class

wfq [ queue-number total-queue-number ]

Remove the configured WFQ of the default
class

undo wfq

3Com Router Configuration Guide Addendum for V1.20