Alcatel-Lucent 7950 Quality Of Service Manual page 227

accounting functions only. The 14 bytes are not actually removed from the packet, only the accounting size
of the packet is affected.
As inferred above, the variable accounting size offered by the packet-byte-offset command is targeted at the
queue and queue group level. When the queue group represents the last-mile bandwidth constraints for a
subscriber, the offset allows the HSMDA queue group to provide an accurate accounting to prevent overrun
and underrun conditions for the subscriber. The accounting size of the packet is ignored by the secondary
shapers, the scheduling priority level shapers and the scheduler maximum rate. The actual on-the-wire frame
size is used for these functions to allow an accurate representation of the behavior of the subscribers packets
on an Ethernet aggregation network.
The packet-byte-offset value may be overridden for the HSMDA queue at the SAP or subscriber profile
level.
The no form of the command removes any accounting size changes to packets handled by the queue. The
command does not affect overrides that may exist on SAPs or subscriber profiles associated with the queue.
Parameters
add add-bytes — Indicates that the byte value should be added to the packet for queue and queue group
level accounting functions. Either the add or subtract keyword must be specified. The corresponding
byte value must be specified when executing the packet-byte-offset command. The add keyword is
mutually exclusive with the subtract keyword.
Values
subtract sub-bytes — Indicates that the byte value should be subtracted from the packet for queue and
queue group level accounting functions. The subtract keyword is mutually exclusive with the add
keyword. Either the add or subtract keyword must be specified. The corresponding byte value must be
specified when executing the packet-byte-offset command. Note that the minimum resulting packet size
used by the system is 64 bytes with an HS-MDA.
Values
wrr-policy
Syntax wrr-policy wrr-policy-name
no wrr-policy
Context config>qos>sap-egress>hsmda-queues
Description
This command associates an existing HSMDA weighted-round-robin (WRR) scheduling loop policy to the
HSMDA queue.
Parameters
wrr-policy-name — Specifies the existing HSMDA WRR policy name to associate to the queue.
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