Queue Parameters - Alcatel-Lucent 7950 Quality Of Service Manual

QoS Policies

Queue Parameters

This section describes the queue parameters provisioned on access and queues for QoS.
The queue parameters are:
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Queue ID
The queue ID is used to uniquely identify the queue. The queue ID is only unique within the
context of the QoS policy within which the queue is defined.
Queue Hardware Scheduler
The hardware scheduler for a queue dictates how it will be scheduled relative to other queues at
the hardware level. When a queue is defined in a service ingress or service egress QoS policy, it is
possible to explicitly define the hardware scheduler to use for the queue when it is applied to a
SAP.
Being able to define a hardware scheduler is important as a single queue allows support for
multiple forwarding classes. The default behavior is to automatically choose the expedited or non-
expedited nature of the queue based on the forwarding classes mapped to it. As long as all
forwarding classes mapped to the queue are expedited (nc, ef, h1 or h2), the queue will be treated
as an expedited queue by the hardware schedulers. When any non-expedited forwarding classes
are mapped to the queue (be, af, l1 or l2), the queue will be treated as best effort by the hardware
schedulers.
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Queue ID on page 30
Queue Hardware Scheduler on page 30
Committed Information Rate on page 31
Peak Information Rate on page 32
Adaptation Rule on page 33
Committed Burst Size on page 35
Maximum Burst Size on page 35
High-Priority Only Buffers on page 35
Packet Markings on page 36
Queue-Types on page 37
7950 XRS Quality of Service Guide