Cisco ME 3600X, Справочник по командам

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Cisco ME 3800X and ME 3600X Switch Command Reference
OL-28238-01
Chapter 2 Cisco ME 3800X and ME 3600X Switch Cisco IOS Commands
random-detect dscp
random-detect dscp
To change the minimum and maximum packet thresholds for the differentiated services code point
(DSCP) value, use the
random-detect dscp command in QoS policy-map class configuration mode. To
return the minimum and maximum packet thresholds to the default for the DSCP value, use the no form
of this command.
random-detect dscp dscp-value min-threshold max-threshold [ mark-probability-denominator ]
no random-detect dscp dscp-value min-threshold max-threshold [ mark-probability-denominator ]
Syntax Description
Command Default
If WRED is using the DSCP value to calculate the drop probability of a packet, all entries of the DSCP
table are initialized with the default settings shown in
Table 4 in the “Usage Guidelines” section of this
command.
Command Modes
Policy-map class configuration
Command History
Usage Guidelines The random-detect dscp command allows you to specify the DSCP value. The DSCP value can be a
number from 0 to 63, or it can be one of the following keywords: af11 , af12 , af13 , af21 , af22 , af23 , af31 ,
af32 , af33 , af41 , af42 , af43 , cs1 , cs2 , cs3 , cs4 , cs5 , or cs7 .
dscp-value The DSCP value. The DSCP value can be a number from 0 to 63, or
it can be one of the following keywords:
af11 , af12 , af13 , af21 ,
af22 , af23 , af31 , af32 , af33 , af41 , af42 , af43 , cs1 , cs2 , cs3 , cs4 ,
cs5 , cs7, ef , or rsvp .
min-threshold Minimum threshold in number of packets. The value range of this
argument is from 1 to 4096. When the average queue length reaches
the minimum threshold, Weighted Random Early Detection
(WRED) randomly drops some packets with the specified DSCP
value.
max-threshold Maximum threshold in number of packets. The value range of this
argument is from the value of the
min-threshold argument to 4096.
When the average queue length exceeds the maximum threshold,
WRED drops all packets with the specified DSCP value.
mark-probability-denominator (Optional) Denominator for the fraction of packets dropped when
the average queue depth is at the maximum threshold. For example,
if the denominator is 512, 1 out of every 512 packets is dropped
when the average queue is at the maximum threshold. The value
range is from 1 to 65536. The default is 10; 1 out of every 10 packets
is dropped at the maximum threshold.
Release Modification
15.1(2)EY This command was introduced.