Dell Command Line Reference Guide for the S4048–ON System


queue egress

Assign a WRED Curve to all eight egress Multicast queues or designate the percentage for the Multicast bandwidth queue.

queue egress multicast linecard {slot number port-set number | all} [wred-profile name | multicast-bandwidth percentage]

To return to the default, use the no queue egress multicast linecard {slot number port-set number | all} [wred-profile name | multicast-bandwidth percentage] command.

linecard number
Enter the keyword linecard then the line card slot number.
port-set number
Enter the keywords port-set then the line card’s port pipe. The range is from 0 or 1.
Enter the keyword all to apply to all line cards.
wred-profile name
(OPTIONAL) Enter the keywords wred-profile then your WRED profile name in character format (16 character maximum). Or use one of the pre-defined WRED profile names.

Pre-defined Profiles: wred_drop, wred-ge_y, wred_ge_g, wred_teng_y, wred_teng_g.

multicast-bandwidth percentage
(OPTIONAL) Enter the keywords multicast-bandwidth then the bandwidth percentage. The range is from 0 to 100%.
Command Modes
Command History

This guide is platform-specific. For command information about other platforms, see the relevant Dell Networking OS Command Line Reference Guide.

Introduced on the S4048-ON.
Introduced on the S3048-ON.
Introduced on the S4820T.
Introduced on the S4810.
Added support for multicast-bandwidth. and
Introduced on the E-Series.
Usage Information
This command does not uniquely identify a queue, but rather identifies only a set of queues. The WRED curve is applied to all eight egress Multicast queues.
Important Points to Remember — Multicast-Bandwidth Option
  • A unique multicast weighted fair queuing (WFQ) setting can be applied only on a per port-pipe basis. The minimum percentage of the multicast bandwidth assigned to any of the ports in the port-pipe takes effect for the entire port-pipe.
  • If the percentage of multicast bandwidth is 0, control traffic going through multicast queues are dropped.
  • The no form of the command without multicast-bandwidth and wred-profile, removes both the wred-profile and multicast-bandwidth configuration.
  • On 10-Gigabit ports only, the multicast bandwidth option works only if the total unicast bandwidth is more than the multicast bandwidth.
  • If strict priority is applied along with multicast-bandwidth, the effect of strict priority is on all ports where unicast and multicast bandwidth are applied.
  • When multicast bandwidth is assigned along with unicast bandwidth, first multicast bandwidth is reserved for that port, then the remaining unicast bandwidth configured is adjusted according to the bandwidth available after reserving for multicast bandwidth.

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