3Com S7906E - Switch, Configuration Manual

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10-1
10
Aggregation CAR Configuration
Aggregation CAR Overview
With aggregation CAR, one CAR is used to rate limit flows on different ports as a whole. If aggregation
CAR is enabled for multiple ports, the total traffic on these ports must conform to the traffic policing
parameters set in the aggregation CAR.
The S7900E series switches implement aggregation CAR with QoS policies.
Only the SD and EB cards support QoS policies that contain aggregation CAR actions.
Referencing an Aggregation CAR in a Traffic Behavior
Configuration prerequisites
z
You have determined the parameters in the aggregation CAR.
z
You have determined the traffic behavior to reference the aggregation CAR.
Configuration procedure
Follow these steps to reference an aggregation CAR in a traffic behavior:
To do… Use the command… Remarks
Enter system view system-view —
Configure an aggregation
CAR action
qos car car-name aggregative cir
committed-information-rate
[ cbs
committed-burst-size [ ebs
excess-burst-size ] ] [ pir
peek-information-rate ] [ green
action ] [ yellow action ] [ red action ]
Required
z
On SC, SA, and EA LPUs,
the granularity of traffic
policing is 64 kbps.
z
On SD and EB LPUs, the
granularity of traffic policing
is 8 kbps.
Create a class and enter
class view traffic classifier tcl-name [ operator
{ and | or } ]
—
Configure the match
criteria
if-match match-criteria —
Exit class view quit —
Enter traffic behavior view traffic behavior behavior-name Required