Qos Wred Weighting-Constant - 3Com 3C13618 Command Reference Manual

undo qos wred ip-precedence ip-precedence
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Parameter
ip-precedence: Precedence of IP packets, ranging from 0 to 7.
low-limit: WRED bottom limit of precedence threshold, ranging from 1 to 1,024. The
default value of low-limitis 10.
high-limit: WRED top limit of precedence threshold, ranging from 1 to 1,024. The
default value of high-limit is 30
discard-prob: Denominator of discarded probability, ranging from 1 to 255. The
default value of discard-prob is 10.
Description
Using the qos wred ip-precedence command, you can configure the bottom limit,
top limit, and the denominator of discarded probability of each precedence. Using the
undo qos wred ip-precedence command, you can restore the default values of
various WRED precedence parameters.
WRED parameters cannot be configured unless WRED is applied on interface by
using the qos wred command. What the threshold limits is the average queue length.
For related commands, see qos wred, display qos wred.
Example
# Set the bottom limit of packet queue whose precedence is 3 as 20 and the top limit
as 40 on interface Ethernet 0, while denominator of the discarded probability as 15.
[3Com-Ethernet0] qos wfq
[3Com-Ethernet0] qos wred
[3Com-Ethernet0]
discard-probability 15

3.1.4 qos wred weighting-constant

Syntax
qos wred weighting-constant exponent
undo qos wred weighting-constant
qos wred ip-precedence 3 low-limit 20 high-limit
QoS
40
29