Network Queue QoS Policies
Quality of Service Guide 171
The system maintains a slope policy named hsmda-default which acts as a default policy when an
explicit slope policy has not been defined for an HSMDA queue. The default policy may be edited, but
it cannot be deleted. If a no slope-policy hsmda-default command is executed, the default slope policy
returns to the factory default settings. The factory default settings are as follows:
High Slope:
• Start-Utilization 100%
• Max-Utilization 100%
• Max-Probability 100%
• Shutdown
Low Slope:
• Start-Utilization 90%
• Max-Utilization 90%
• Max-Probability 1
• No Shutdown
Time-Average-Factor: 0
The no form of the command restores the association between the queue and the HSMDA default slope
policy. The command has no immediate effect for queues that have a local override defined for the
slope policy.
This command applies only to the 7450 ESS and 7750 SR.
Parameters hsmda-slope-policy-name — Specifies an existing slope policy within the system. If a slope policy
with the specified name does not exist, the slope-policy command will fail without modifying
the slope behavior on the queue. Once a slope policy is associated with an HSMDA queue,
the policy cannot be deleted.
Default hsmda-default
adaptation-rule
Syntax adaptation-rule [pir {max | min | closest}]
no adaptation-rule
Context config>qos>network-queue>egress-hsmda>queue
Description This command defines the method used by the system to derive the operational PIR settings when the
HSMDA queue is provisioned in hardware. For the PIR parameters individually, the system attempts
to find the best operational rate depending on the defined constraint.
The no form of the command removes any explicitly defined constraints used to derive the operational
PIR created by the application of the policy. When a specific adaptation-rule is removed, the default
constraints for pir apply.
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