Alcatel-Lucent 7210 SAS-X - Page 780

VPRN Service Configuration Commands
Page 780 7210 SAS-X OS Services Guide
be added to the packet and up to 32 bytes may be removed from the packet. An example use case for
subtracting bytes from each packet is an IP based accounting function. Given a Dot1Q encapsulation,
the command packet-byte-offset subtract 14 would remove the DLC header and the Dot1Q header
from the size of each packet for 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. The packet-byte-offset, when set, applies to all queues in the quee
group. 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 subscriberís packets on an
Ethernet aggregation network.
The packet-byte-offset value may be overridden at the queue-group level.
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 0 — 31
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.
Values 1 — 32
slope-policy
Syntax slope-policy hsmda-slope-policy-name
no slope-policy
Context config>service>vprn>if>sap>egress>hsmda-queue-overider
config>service>vprn>if>sap>ingress>hsmda-queue-overider
Description This command specifies an existing slope policy name.
secondary-shaper
secondary-shaper secondary-shaper-name
no secondary-shaper
Context config>service>vprn>if>sap>egress>hsmda-queue-overider
Description This command configures an HSMDA secondary shaper. Note that an shaper override can only be
configured on an HSMDA SAP.
Parameters secondary-shaper-name — Specifies a secondary shaper name up to 32 characters in length.