Reference Guide

1234 | Quality of Service (QoS)
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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 will take 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, will
remove both the wred-profile and multicast-bandwidth configuration.
• On 10 Gigabit ports only, the multicast bandwidth option will work 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 will be reserved for that port, then the remaining unicast
bandwidth configured is adjusted according to the bandwidth available after
reserving for multicast bandwidth.
Related
Commands
queue ingress
e
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
show queue statistics egress Display the egress queue statistics
linecard number
Enter the keyword linecard followed by the line card slot number.
E-Series Range: 0 to 13 on a E1200, 0 to 6 on a E600/E600i, and 0 to
5 on a E300.
port-set number
Enter the keyword port-set followed by the line card’s port pipe.
Range: 0 or 1
all
Enter the keyword all to apply to all line cards.
wred-profile name
(OPTIONAL) Enter the keyword wred-profile followed by 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