Shared-Queue QoS Policy Command Reference
666 Quality of Service Guide
Parameters percent — The percent of buffers from the total buffer pool space for the maximum amount of
buffers, expressed as a decimal integer. If 10 MB is the total buffers in the buffer pool, a value
of 10 would limit the maximum queue size to 1MB (10%) of buffer space for the forwarding
class queue. If the total size is increased to 20MB, the existing value of 10 would
automatically increase the maximum size of the queue to 2MB.
Values 0 to 100
pool
Syntax pool pool-name [create]
no pool pool-name
Context config>qos>shared-queue>queue
Description This command is utilized once the queue is created within the policy. The pool command may be used
to either remove the queue from the pool, or specify a new pool name association for the queue. The
pool command does not appear in save or show command output. Instead, the current pool name for
the queue will appear (or not appear) on the queue command output using the pool keyword.
The no pool command is used to remove a named pool association for the queue. When the pool name
is removed, the queue will be placed on the appropriate default pool.
Default None
Parameters pool-name — The specified pool-name identifies a named pool where the policy will be applied.
Each queue created within the system is tied to a physical port. When the policy is applied
and the queue is created, the system will scan the named pools associated with the port to find
the specified pool name. If the pool is not found on the port, the system will then look at
named pools defined at the ports XMA or MDA level. If the pool name is not found on either
the port or XMA or MDA, the queue will be marked as ‘pool-orphaned’ and will be mapped
to the appropriate default pool. If the pool comes into existence, the queue will be moved from
the default pool to the new named pool and the ‘pool-orphaned’ state will be cleared. The
specified name must be an ASCII name string up to 32 characters long.
rate
Syntax rate [percent] [cir percent]
no rate
Context config>qos>shared-queue>queue
Description This command defines the administrative Peak Information Rate (PIR) and the administrative
Committed Information Rate (CIR) parameters for the queue. The PIR defines the percentage that the
queue can transmit packets through the switch fabric (for SAP ingress queues) or out an egress
interface (for SAP egress queues). Defining a PIR does not necessarily guarantee that the queue can
transmit at the intended rate. The actual rate sustained by the queue can be limited by over-subscription
factors or available egress bandwidth.
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