R0106-HP MSR Router Series ACL and QoS Command Reference(V7)

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Field Descri
p
tion
Pre IP precedence of packets.
Low Lower limit for a queue.
High Upper limit for a queue.
Dis-prob Drop probability.
Random-discard Number of packets dropped by WRED.
Tail-discard Number of packets dropped by tail drop.
qos wred enable
Use qos wred enable to enable WRED on an interface or PVC.
Use undo qos wred enable to restore the default.
Syntax
qos wred [ dscp | ip-precedence ] enable
undo qos wred [ dscp | ip-precedence ] enable
Default
Tail drop is used.
Views
Interface view, PVC view
Predefined user roles
network-admin
Parameters
dscp: Uses the DSCP values for calculating the drop probability.
ip-precedence: Uses the IP precedence for calculating the drop probability. This keyword is used by
default.
Usage guidelines
You must enable WFQ on the interface before configuring the qos wred enable command.
Examples
# Enable WRED on GigabitEthernet 2/1/0, and use the IP precedence for drop probability calculation.
<Sysname> system-view
[Sysname] interface gigabitethernet 2/1/0
[Sysname-GigabitEthernet2/1/0] qos wfq queue-length 100 queue-number 512
[Sysname-GigabitEthernet2/1/0] qos wred ip-precedence enable
Related commands
display qos wred interface
qos wred dscp
Use qos wred dscp to configure the lower limit, upper limit, and drop probability for a DSCP value.