Users Guide

Command History
This guide is platform-specific. For command information about other platforms, see the relevant Dell Networking
OS Command Line Reference Guide.
Version Description
9.8(0.0P5) Introduced on the S4048-ON.
9.8(0.0P2) Introduced on the S3048-ON.
8.3.19.0 Introduced on the S4820T.
8.3.8.10 Introduced on the S4810.
7.5.1.0 Added support for multicast-bandwidth.
7.4.1.0 and 6.5.3.0 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.
queue ingress
Assign a WRED Curve to all eight ingress Multicast queues or designate the percentage for the Multicast bandwidth queue.
Syntax
queue ingress multicast {linecard slot number port-set number | all} [wred-
profile name]
To return to the default, use the no queue ingress multicast {linecard slot number port-set
number | all} [wred-profile name] command.
Parameters
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.
all 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.
1264 Quality of Service (QoS)