Queue Sharing and Redirection
Quality of Service Guide 447
The hi-low-prio-only drop tail exists also for egress network queues in a network queue policy,
however, in these policies it is not configurable and has a default of an additional 10% of the MBS
value on top of the high priority only.
Default 20%
Parameters percent — The percentage reserved for higher priority (in-profile and out-of-profile) traffic on the
queue.
Values 0 to 100, default
high-prio-only
Syntax high-prio-only percent
no high-prio-only
Context config>qos>qgrps>egr>qgrp>queue
config>qos>qgrpid>ing>qgrp>queue
Description The high-prio-only command configures the percentage of buffer space for the queue, used
exclusively by high priority packets. The specified value overrides the default value for the context.
The priority of a packet can only be set in the SAP ingress QoS policy and is only applicable on the
ingress queues for a SAP. At SAP egress, the priority of a packet is based on its profile state.
The no form of this command restores the default high priority reserved size.
Parameters percent — The percentage reserved for high priority traffic on the queue.
Values 0 to 100, default
high-prio-only
Syntax high-prio-only percent-of-mbs
no high-prio-only
Context config>qos>qgrps>ing>qgrp>policer
config>qos>qgrps>egr>qgrp>policer
Description This command is used to configure the percentage of the policer’s PIR leaky bucket's MBS (maximum
burst size) that is reserved for high priority traffic. While the mbs value defines the policer’s high
priority violate threshold, the percentage value defined is applied to the mbs value to derive the
bucket’s low priority violate threshold. See the mbs command details for information on which types
of traffic is associated with each violate threshold.
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