Named Pools
Quality of Service Guide 729
Parameters description-string — The description-string parameter defines the ASCII description string for the
named pool policy. If the string contains spaces, it must be placed within beginning and
ending double quotation marks. Beginning and ending quotation marks are not considered
part of the description string. Only printable ASCII characters are allowed in the string. The
sting does not need to be unique within the system. If the command is executed without the
description-sting present, any existing description string will be unaffected.
Unit: ASCII String
Length: Up to 80 characters
Default None
Named Pool Policy Creation
named-pool-policy
Syntax named-pool-policy policy-name create
no named-pool-policy policy-name
Context config>qos
Description This commands creates a template that may be applied at the XMA, MDA, or port level to create
named buffer pools. The policy may be applied at either the ingress or egress context for the port,
XMA, or MDA. Policies applied on the MDA will take effect only after the named pool mode is set
on the IOM. Setting the IOM named pool on will reboot the card.
Within the policy, named pools may be defined in the q1-pools context indicating that the provisioned
pools will be used on Q1 based hardware. When the policy is associated at the XMA or MDA level,
named pools defined in the policy allow queues from any port to be associated. When the policy is
associated at the port level, the named pools created are only available to queues associated with the
port. Each pool defined allows the slope-policy, resv-cbs, access-allocation-weight and network-
allocation-weight parameters to be configured for the pool. The policy also manages the port-
allocation-weights used to divide the buffers managed by the port between named pools local to the
port, named pools on the ports XMA or MDA and the default pools. The allocation weights for a given
port are derived in the following way (lowest to highest preference):
1. Port default allocation weights
Default: default 50, mda 50, port 50
2. XMA or MDA named pool policy port allocation weights
3. Port named pool policy port allocation weights
4. A named-pool-policy that is currently applied to an XMA or MDA or port may not be deleted.
All associations between the policy and XMA or MDAs must be removed prior to deleting
the policy.
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