Alcatel-Lucent 7750 SR OS Service Manual page 780

IES Service Configuration Commands
Table 5: QinQ Mark Top Only Explicit Marking Actions
The QinQ and TopQ SAP PBit marking follows the default behavior devined in
mark-top-only is not specified.
The dot1p dot1p-value command must be configured without the qinq-mark-top-only parameter to
remove the TopQ PBits only marking restriction.
agg-rate-limit
Syntax agg-rate-limit agg-rate
no agg-rate-limit
Context config>service>ies>if>sap>egress
Description
This command defines a maximum total rate for all egress queues on a service SAP or multi-service
site. The agg-rate-limit command is mutually exclusive with the egress scheduler policy. When an
egress scheduler policy is defined, the agg-rate-limit command will fail. If the agg-rate-limit
command is specified, at attempt to bind a scheduler-policy to the SAP or multi-service site will fail.
A multi-service site must have a port scope defined that ensures all queues associated with the site are
on the same port or channel. If the scope is not set to a port, the agg-rate-limit command will fail.
Once an agg-rate-limit has been assigned to a multi-service site, the scope cannot be changed to card
level.
A port scheduler policy must be applied on the egress port or channel the SAP or multi-service site
are bound to in order for the defined agg-rate-limit to take effect. The egress port scheduler enforces
the aggregate queue rate as it distributes its bandwidth at the various port priority levels. The port
scheduler stops offering bandwidth to member queues once it has detected that the aggregate rate
limit has been reached.
If a port scheduler is not defined on the egress port, the queues are allowed to operate based on their
own bandwidth parameters.
The no form of the command removes the aggregate rate limit from the SAP or multi-service site.
Parameters
agg-rate — defines the rate, in kilobits-per-second, that the maximum aggregate rate that the queues
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Egress SAP
Type
TopQ No preserved Dot1P bits
TopQ Preserved Dot1P bits (used as TopQ
and BottomQ PBits)
QinQ No preserved Dot1P bits
QinQ Preserved Dot1P bits (used as TopQ
and BottomQ PBits)
on the SAP or MSS can operate.
Ingress Packet Preserved
Dot1P State
7750 SR OS Services Guide
Marked (or Remarked) PBits
TopQ PBits marked using dot1p-
value
TopQ PBits marked using dot1p-
value, BottomQ PBits preserved
TopQ PBits PBits marked using
dot1p-value, BottomQ PBits
marked with zero
TopQ PBits PBits marked using
dot1p-value, BottomQ PBits
marked using preserved value
Table 27 when qinq-