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DXS-3600-32S 10GbE Layer 2/3 Switch CLI Reference Guide
Weighted Random Early Detection (WRED) Commands
65-1 clear random-detect drop-counter
This command is used to clear WRED drop counters.
clear random-detect drop-counter
Parameters
Default
Command Mode
None.
None.
Interface Configuration Mode.
Command Default Level
Level: 15
Usage Guideline
Only physical ports are valid for this command.
Example
This example shows how to clear WRED drop counters.
DXS-3600-32S#configure terminal
DXS-3600-32S(config)#interface tenGigabitEthernet 3
DXS-3600-32S(config-if)#clear random-detect drop-counter
Success
DXS-3600-32S(config-if)#
65-2 random-detect
This command is used to enable the WRED function. The no form of this command use to disable the WRED function.
random-detect COS-VALUE [profile id]
no random-detect COS-VALUE
Parameters
COS-VALUE
profile id
Specifies CoS queues on which WRED state will be set.
Specifies the WRED profile that will be applied. If not specified, the WRED profile 1 will be applied
Default
Command Mode
WRED is disabled.
Interface Configuration Mode.
Command Default Level
Level: 15
Usage Guideline
Only physical ports are valid for this command. When a packet arrives, the current average queue size is calculated by the hardware. The weight value is set by the command random-detect exponential-weight.
If the current average queue size is less than the min-threshold of the queue, the arriving packet is queued. If the current queue length is between the min-threshold and the max-threshold of the queue, the packet is either dropped or queued depending on the packet drop probability. If the average queue size is greater than the max-threshold of the queue, all packets will be dropped
Example
This example shows how to enable the WRED function queue 5 and apply WRED profile 10.
DXS-3600-32S#configure terminal
DXS-3600-32S(config)#interface tenGigabitEthernet 3
DXS-3600-32S(config-if)#random-detect 5 profile 10
Success
DXS-3600-32S(config-if)#
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DXS-3600-32S 10GbE Layer 2/3 Switch CLI Reference Guide
65-3 random-detect exponential-weight
This command is used to configure the WRED exponential weight factor for the average queue size calculation for the queue. The no form is used to configure it to the default setting.
random-detect exponential-weight COS-VALUE exponent <VALUE 0-15>
no random-detect exponential-weight
Parameters
COS-VALUE
Specifies the CoS queues on which exponent will be set.
exponent <VALUE 0-15> Specifies the exponent value used in the average queue size calculation. This value must be between 0 and 15.
Default
Command Mode
The default exponential weight factor is 9.
Interface Configuration Mode.
Command Default Level
Level: 15
Usage Guideline
Only physical ports are valid for this command.
Example
This example shows how to configure the exponent to 10 and the queue to 5.
DXS-3600-32S#configure terminal
DXS-3600-32S(config)#interface tenGigabitEthernet 3
DXS-3600-32S(config-if)#random-detect exponential-weight 5 exponent 10
Success
DXS-3600-32S(config-if)#
65-4 random-detect profile
This command is used to configure the WRED profile. Use no form of this command to configure it to default setting.
random-detect profile id [tcp | non-tcp] [green | yellow | red] min-threshold <0-100> max-threshold <0-100>
max-drop-rate <0-14>
no random-detect profile id
Parameters
id
tcp non-tcp green yellow red
min-threshold <0-100>
max-threshold <0-100>
Specifies the ID of the WRED profile that will be set.
Specifies the WRED drop parameters for TCP packet to be set. If not specified, the same WRED drop parameter will be set for both type of traffic.
Specifies the WRED drop parameters for a Non-TCP packet to be set. If not specified, the same WRED drop parameter will be set for both type of traffic.
Specifies the WRED drop parameters for the green packet to be set. If not specified, the same WRED drop parameter will be set for all color packet.
Specifies the WRED drop parameters for the yellow packet to be set. If not specified, the same WRED drop parameter will be set for all color packet.
Specifies the WRED drop parameters for the red packet to be set. If not specified, the same WRED drop parameter will be set for all color packet.
Specifies the minimum queue size (in percentage of total queue size) to start WRED dropping. This value must be between 0 and 100.
Specifies the maximum queue size (in percentage of total queue size) over which
WRED will drop all packets destined for this queue. This value must be between 0 and 100.
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max-drop-rate <0-14>
DXS-3600-32S 10GbE Layer 2/3 Switch CLI Reference Guide
Specifies the drop probability when the average queue size reaches max-threshold.
This value must be between 0 and 14.
Default
Command Mode
The default maximum drop rate is 0
Global Configuration Mode.
Command Default Level
Level: 15
Usage Guideline
None.
Example
This example shows how to configure the WRED drop parameter for all types and color packets on profile 10.
DXS-3600-32S#configure terminal
DXS-3600-32S(config)#random-detect profile 10 min-threshold 30 max-threshold 50 max-drop-rate 10
Success
DXS-3600-32S(config)#
Example
This example shows how to configure the WRED drop parameter for TCP yellow and red packets on profile 10.
DXS-3600-32S#configure terminal
DXS-3600-32S(config)#random-detect profile 10 tcp yellow red min-threshold 20 max-threshold 40 max-drop-rate 5
Success
DXS-3600-32S(config)#
65-5 show queueing random-detect
This command is used to display the WRED configuration on specified interfaces.
show queueing random-detect [interface INTERFACE-ID [,|-]]
Parameters
interface INTERFACE-ID
[,|-]
Specifies the interface ID for which the WRED configuration will be displayed. You can specify multiple interface IDs, which are separated by commas (,) or hyphens (-
). No spaces are allowed before or after the commas or hyphens.
Default
None.
Command Mode
EXEC Mode.
Command Default Level
Level: 15
Usage Guideline
The command will display the WRED configuration. If the interface ID isn’t specified, the WRED configuration for all ports on the system will be displayed.
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DXS-3600-32S 10GbE Layer 2/3 Switch CLI Reference Guide
Example
This example displays the WRED configuration and CoS queue status.
DXS-3600-32S#show queueing random-detect tenGigabitEthernet 3
Current WRED configuration:
Interface: 3
CoS WRED State Exp-weight-constant Profile
--- ---------- ------------------- -------
0 Disabled 9 1
1 Disabled 9 1
2 Disabled 9 1
3 Disabled 9 1
4 Disabled 9 1
5 Enabled 10 10
6 Disabled 9 1
7 Disabled 9 1
DXS-3600-32S#
65-6 show random-detect drop-counter
This command is used to display the WRED drop counter.
show random-detect drop-counter [interface INTERFACE-ID [,|-]]
Parameters
interface INTERFACE-ID
[,|-]
Specifies the interface ID for which the WRED drop counter will be displayed. You can specify multiple interface IDs, which are separated by commas (,) or hyphens (-
). No spaces are allowed before or after the commas or hyphens.
Default
Command Mode
None.
EXEC Mode.
Command Default Level
Level: 15
Usage Guideline
Use this command to display the WRED drop counter.
Example
This example shows how to display the WRED drop counter.
DXS-3600-32S#show random-detect drop-counter tenGigabitEthernet 3
Current WRED Drop Counter:
Interface Green Yellow Red
--------- ---------------------- ---------------------- ----------------------
3 0 5 10
DXS-3600-32S#
65-7 show random-detect profile
This command is used to display the WRED profile setting.
show random-detect profile [profile id]
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DXS-3600-32S 10GbE Layer 2/3 Switch CLI Reference Guide
Parameters
profile id Specifies the WRED profile ID for which the WRED profile configuration will be displayed. If not specified, the configuration for all WRED profiles will be displayed.
Default
Command Mode
None.
EXEC Mode.
Command Default Level
Level: 15
Usage Guideline
Use this command to display the WRED profile setting.
Example
This example shows how to display the WRED profile 1 setting.
DXS-3600-32S#show random-detect profile 1
WRED Profile 1
Packet Type Min-Threshold Max-Threshold Max-Drop-Rate
--------------- ------------- ------------- -------------
TCP-GREEN 20 80 0
TCP-YELLOW 20 80 0
TCP-RED 20 80 0
NON-TCP-GREEN 20 80 0
NON-TCP-YELLOW 20 80 0
NON-TCP-RED 20 80 0
DXS-3600-32S#
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