Configure Frame Relay QoS 265
Numerically, the value of CBS should not be less than CIR ALLOW, otherwise, the
large packets may not be sent.
Configure Frame Relay
Traffic Policing Frame Relay traffic policing configuration includes:
■Enable the Frame Relay traffic policing
■Create a Frame Relay class
■Associate the Frame Relay class with the Frame Relay interface or a PVC
Configure the parameters of Frame Relay class for Frame Relay traffic policing
1Enable the Frame Relay Traffic Policing
Perform the following configurations in synchronous serial interface view.
Tabl e 303 Enable/Disable the Frame Relay traffic policing
By default, the Frame Relay traffic policing is not enabled on the interface.
The function of Frame Relay traffic policing is applied on the interface receiving
the Frame Relay packets on a router. It can only be applied at the DCE side on a
Frame Relay network.
2Create a Frame Relay class
Please refer to the above section “Configure Frame Relay class” for the
configuration procedure in detail.
3Associate the Frame Relay class with the Frame Relay interface or a PVC
Please refer to the above section “Configure Frame Relay class” for the
configuration procedure in detail.
4Configure the parameters of Frame Relay class for Frame Relay traffic policing
Perform the following configurations in frame relay class view.
Tabl e 304 Configure the parameters of Frame Relay class
The commands cbs, ebs, and cir allow can be used to set the inbound and
outbound parameters on a PVC. However, only the inbound parameters are
effective for the Frame Relay traffic policing.
Operation Command
Enable the Frame Relay traffic policing fr traffic-policing
Disable the Frame Relay traffic policing undo fr traffic-policing
Operation Command
Set the CBS of a Frame Relay PVC cbs [ inbound ] burst-size
Restore the CBS of a Frame Relay PVC to the default
value undo cbs [ inbound ]
Set the EBS of a Frame Relay PVC ebs [ inbound ]
excess-burst-size
Restore the EBS of a Frame Relay PVC to the default
value undo ebs [ inbound ]
Set the CIR ALLOW of a Frame Relay PVC cir allow [ inbound ]
rate-limit
Restore the CIR ALLOW of a Frame Relay PVC to the
default value undo cir allow [ inbound ]