Alcatel-Lucent 7950 Quality Of Service Manual page 392

Queue Group Commands
subtract bytes — Specifies an number of bytes to add as the offset amount.
Values
parent
Syntax parent {root | arbiter-name} [level level] [weight weight-within-level]
no parent
Context config>qos>qgrpid>ing>qgrp>policer
Description This command defines an optional parent scheduler that further governs the available bandwidth given the
queue aside from the queue's PIR setting. When multiple schedulers and/or queues share a child status with
the parent scheduler, the weight or level parameters define how this queue contends with the other children
for the parent's bandwidth.
The no form of the command removes a child association with a parent scheduler. If a parent association
does not currently exist, the command has no effect and returns without an error. Once a parent association
has been removed, the former child queue attempts to operate based on its configured rate parameter.
Removing the parent association on the queue within the policy takes effect immediately on all queues using
the SAP egress QoS policy.
Parameters
root — Selects the root level arbiter for the parent to the child.
arbiter-name — Specifies an arbiter for the parent to the child.
Values
Default
weight-within-level — weight defines the relative weight of this queue in comparison to other child
schedulers and queues while vying for bandwidth on the parent scheduler-name. Any queues or
schedulers defined as weighted receive no parental bandwidth until all strict queues and schedulers on
the parent have reached their maximum bandwidth or are idle. In this manner, weighted children are
considered to be the lowest priority.
All weight values from all weighted active queues and schedulers with a common parent scheduler are
added together. Then, each individual active weight is divided by the total, deriving the percentage of
remaining bandwidth provided to the queue or scheduler after the strict children are serviced. A weight
is considered to be active when the pertaining queue or scheduler has not reached its maximum rate and
still has packets to transmit. All child queues and schedulers with a weight of 0 are considered to have
the lowest priority level and are not serviced until all strict and non-zero weighted queues and
schedulers are operating at the maximum bandwidth or are idle.
Values
Default
level — The optional level parameter defines the level of hierarchy when compared to other schedulers and
queues when vying for bandwidth on the parent scheduler-name. Any queues or schedulers defined as
strict receive no parental bandwidth until all strict queues and schedulers with a higher (numerically
larger) priority on the parent have reached their maximum bandwidth or are idle.
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Any string up to 32 characters long composed of printable, 7-bit ASCII characters. If the
string contains special characters (#, $, spaces, etc.), the entire string must be enclosed
within double quotes.
None. Each parental association must be explicitly defined.
0 — 100
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7950 XRS Quality of Service Guide