High Scale Ethernet MDA Capabilities
Quality of Service Guide 807
The scheduling-class command will also fail using the group keyword when a rate override for the
scheduling class exists on an HSMDA scheduler instance associated with the policy. The rate override
for the scheduling class indicates the class is directly attached to a strict priority level, conflicting with
the policy group keyword trying to place the class in the specified group. The command will fail
without effecting the scheduling class definition on the policy and return an override-mismatch error
specifying the scheduling object where the override exists.
The configured priority level rate limits may be overridden at the egress port or channel using the
egress-scheduler-override level priority-level command. When a scheduler instance has an override
defined for a priority level, both the rate and cir values are overridden even when one of them is not
explicitly expressed in the override command. For instance, if the cir kilobits-per-second portion of the
override is not expressed, the scheduler instance defaults to not having a CIR rate limit for the priority
level even when the port scheduler policy has an explicit CIR limit defined.
Other Override Constraints
The scheduling overrides cannot change or remove a scheduling class from a policy defined weighted
group membership.
The no form of the command returns the scheduling class represented by class-id to the default
behavior. The default behavior for a scheduling class is to not be a member of either weighted
scheduling class groups and have a rate set to max. The no form of the command will fail if the
scheduling class is currently a member of one of the weighted scheduling class groups and a weight
override is in effect on a scheduling object for the class. An override mismatch error will be returned
specifying the scheduling object where the override exists.
Parameters class — specifies the weight the QMDA port scheduler policy should apply to this policy level
within the group it belongs to.
Values 1 to 8
group group-id — If the scheduling-class command is executed with the group keyword
specified, a group-id must be specified. Two weighted scheduling groups are allowed,
numbered 1 and 2. With the group, the weight keyword specifies the weight the scheduling
class within the group. If weight is not specified, the default weight is 1. Similar to the rate
action of the command, the group version will fail if the scheduling class ID is not consecutive
with the class members currently members of the weighted scheduling group. The command
will have no effect on the current scheduling class settings and a non-contiguous grouping
error will be returned specifying the weighted scheduling group and the current group
members.
The scheduling-class command will also fail using the group keyword when a rate override
for the scheduling class exists on an HSMDA scheduler instance associated with the policy.
The rate override for the scheduling class indicates the class is directly attached to a strict
priority level, conflicting with the policy group keyword trying to place the class in the
specified group. The command will fail without effecting the scheduling class definition on
the policy and return an override-mismatch error specifying the scheduling object where the
override exists.
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