Service SAP QoS Policy Command Reference
280 Quality of Service Guide
When an ingress SAP QoS policy with multipoint queues is applied to an Epipe SAP, the multipoint
queues are not created. When an ingress SAP QoS policy with multipoint queues is applied to an IES
SAP, a multipoint queue will be created when PIM is enabled on the IES interface.
Any billing or statistical queries about a multipoint queue on a non-multipoint service returns zero
values. Any queue parameter information requested about a multipoint queue on a non-multipoint
service returns the queue parameters in the policy. Buffers will not be allocated for multipoint queues
on non-multipoint services. Buffer pool queries return zero values for actual buffers allocated and
current buffer utilization.
The no form of this command removes the queue-id from the SAP ingress QoS policy and from any
existing SAPs using the policy. If any forwarding class forwarding types are mapped to the queue, they
revert to their default queues. When a queue is removed, any pending accounting information for each
SAP queue created due to the definition of the queue in the policy is discarded.
The pool keyword is a create time parameter that allows the queue to receive buffers from an explicit
buffer pool instead of the default buffer pool. The specified pool-name must have been explicitly
created in a named-pool-policy and the policy must have been applied to the MDA or port on which
the queue resides.
If the specified pool-name does not exist on the MDA, the queue will be treated as ‘pool orphaned’ and
will be mapped to the appropriate default pool. Once the pool comes into existence on the MDA or
port, the queue will be mapped to the new pool.
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.
Parameters queue-id — The queue-id for the queue, expressed as an integer. The queue-id uniquely identifies
the queue within the policy. This is a required parameter each time the queue command is
executed.
Values 1 to 32
queue-type — The expedite, best-effort and auto-expedite queue types are mutually exclusive to
each other. Each defines the method that the system uses to service the queue from a hardware
perspective. While parental virtual schedulers can be defined for the queue, they only enforce
how the queue interacts for bandwidth with other queues associated with the same scheduler
hierarchy. An internal mechanism that provides access rules when the queue is vying for
bandwidth with queues in other virtual schedulers is also needed. A keyword must be
specified at the time the queue is created in the SAP ingress policy. If an attempt to change
the keyword after the queue is initially defined, an error is generated.
expedite — This keyword ensures that the queue is treated in an expedited manner independent
of the forwarding classes mapped to the queue.
best-effort — This keyword ensures that the queue is treated in a non-expedited manner
independent of the forwarding classes mapped to the queue.
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