R3303-HP 6600/HSR6600 Routers ACL and QoS Command Reference

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Related commands
• qos policy
• traffic behavior
• classifier behavior
wred
Use wred to enable WRED drop.
Use undo wred to disable WRED.
Syntax
wred [ dscp | ip-precedence ]
undo wred
Views
Traffic behavior view
Default command level
2: System level
Parameters
dscp: Uses the DSCP value for calculating drop probability of a packet.
ip-precedence: Uses the IP precedence value for calculating drop probability of a packet. This keyword
is the default.
Usage guidelines
You can configure this command only after you have configured the queue af command or the queue
wfq command. Applying a QoS policy with WRED configured to an interface overwrites the previous
interface-level WRED configuration.
Examples
# Configure WRED in traffic behavior database and calculate drop probability based on IP precedence.
<Sysname> system-view
[Sysname] traffic behavior database
[Sysname-behavior-database] queue wfq
[Sysname-behavior-database] wred
Related commands
• qos policy
• traffic behavior
• classifier behavior
wred dscp
Use wred dscp to configure the lower limit, upper limit, and drop probability for packets with a specified
DSCP value.
Use undo wred dscp to delete the configuration.