H3C Technologies H3C S12500 Series Switches - Manual (Page 78)

69
Configuring global CAR
Overview
Global committed access rate (CAR) is an approach to policing traffic flows globally. It adds flexibility to
common CAR where traffic policing is performed only on a per-class or per-interface basis. In this
approach, CAR actions are created in system view and each can be referenced to police multiple traffic
flows as a whole. Only aggregate CAR is supported.
An aggregate CAR action is created globally and can be directly applied to interfaces or referenced in
the traffic behaviors associated with different traffic classes to police multiple traffic flows as a whole. The
total rate of the traffic flows must conform to the traffic policing specifications set in the aggregate CAR
action.
Configuring aggregate CAR
Configuration procedure
To configure aggregate CAR:
Step Command Remarks
1. Enter system view. system-view N/A
2. Configure an aggregate
CAR action.
qos car car-name aggregative cir
committed-information-rate [ cbs
committed-burst-size [ ebs excess-burst-size ] ]
[ pir peek-information-rate ] [ red action ]
N/A
3. Enter behavior view. traffic behavior behavior-name N/A
4. Reference the aggregate
CAR in the traffic
behavior.
car name car-name N/A
5. Display the traffic
behavior configuration
information.
display traffic behavior user-defined
[ behavior-name ] [ | { begin | exclude |
include } regular-expression ]
Optional.
Available in any view.
6. Display the configuration
and statistics for the
specified aggregate CAR.
display qos car name [ car-name ] [ | { begin
| exclude | include } regular-expression ] Optional.
Available in any view.
Configuration example
# Create an aggregate CAR action named aggcar-1, and configure the following parameters for it: CIR
200, CBS 2000, and dropping red packets. Reference aggregate CAR aggcar-1 in behavior be1.
system-view
[Sysname] qos car aggcar-1 aggregative cir 200 cbs 2000 red discard