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3Com 10014303 User Manual

Page 12

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The discarding mode based on WRED must already have been enabled via the wred

ip-precedence command.

When the configuration of qos wred is deleted, the wred ip-precedence is also

deleted.

When the af configuration is deleted, the configuration of discarding parameters will

also be deleted.

8)

Enable/Disable traffic policing

Perform the following configurations in the policy-class view.

Table 1-21 Enable/Disable traffic policing for the class

Operation

Command

Enable traffic policing for the class

car cir rate [ cbs size ebs size ] [ conform action [ exceed action] ]

Disable traffic policing for the class

undo car

In the table, action means actions taken on a data packet, including:

discard: Discard a packet.

pass: Send a packet.

remark-dscp-pass new-dscp: Set the value of new-dscp and send it. This value

ranges from 0 to 63.

remark-prec-pass new-prec: Set new IP priority new-prec and send it. This

value ranges from 0 to 7.

If TP is used in the class-policy applied on the interface, it can be applied on both

inbound and outbound interfaces.

When the class-policy including TP feature is applied on an interface, it invalidates the

original qos car command.

If this command is repeatedly configured on the same class policy, the last

configuration replaces the previous one.

The class configured with traffic policing without the application of AF or EF enters the

default queue if it passes traffic policing but encounters interface congestion.

9)

Configure traffic shaping (TS) for a class

Perform the following configurations in the policy-class view.

Table 1-22 Enable/disable TS for a class

Operation

Command

Enable TS for a class

gts cir rate [ cbs burst-size [ ebs size [ queue-length length ] ] ]

Disable TS for a class

undo gts

3Com Router Configuration Guide Addendum for V1.20

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