Brocade Multi-Service IronWare QoS and Traffic Management Configuration Guide (Supporting R05.6.00) - Manual (Page 18)

4 Multi-Service IronWare QoS and Traffic Management Configuration Guide
53-1003037-02
Traffic policing on Brocade NetIron CES and Brocade NetIron CER devices
1
Limitations
In the Brocade NetIron CES and Brocade NetIron CER, UDP rate-limiting is applicable only in the
following scenarios:
• When sending 1% of 1G traffic with packet size of 64 bytes to the device for configured
Burst-max value (up to 8000)
• When sending 10% of 1G traffic with packet size of 64 bytes to the device for configured
Burst-max value (up to 1500)
• When sending 100% of 1G traffic with packet size of 64 bytes to the device for configured
Burst-max value (up to 500).
Configuring traffic policing
The following sections show examples of how to configure each type of traffic policing.
Configuring a policy map
To configure a policy map, enter commands such as these.
Brocade(config)#policy-map map1
Brocade(config-policymap map1)#cir 1000000 cbs 500000 eir 1000000 ebs 500000
This command configures traffic policing policy-map map1 to limit CIR rate to 1000000, the CBS
rate to 500000, the EIR rate to 1000000, and the EBS to 500000. This command only creates a
policy, it must be applied to one or more ports to be operational.
Syntax: [no] policy-map map-name
Syntax: [no] cir cir-rate cbs cbs-rate eir eir-rate ebs ebs-rate [excess-dp dp-val excess-dscp
dscp-num excess-priority priority-num excess-pcp pcp-num excess-exp exp-num]
The map-name variable is the name you use to reference the policy map in traffic policing
command. It can be a character string up to 64 characters long.
The cir parameter defines the value of the CIR as the rate defined in the cir-rate variable.
Acceptable values are: 0 - 100,000,000,000 bps.
The cbs parameter defines the value of the CBS as the rate defined in the cbs-rate variable.
Acceptable values are: 1250 - 12,500,000,000 bytes in increments of 1 byte.
The eir parameter defines the value of the EIR as the rate defined in the eir-rate variable.
Acceptable values are: 0 - 100,000,000,000 bps.
The ebs parameter defines the value of the EBS as the rate defined in the ebs-rate variable.
Acceptable values are: 1250 - 12,500,000,000 bytes in increments of 1 byte.
The following parameters are optional. If configured, they will specify the remarking of the Quality of
Service parameters, if the rate is over the limits that are specified by CIR or CBS, but less than the
limit of EIR and EBS.
The excess-dp parameter specifies the drop precedence for traffic whose bandwidth requirements
exceed what is available in the CIR bucket and is sent to the EIR bucket. Acceptable values for the
dp-value are 0 - 3. Packets with a value of 0 are least likely to be dropped and packets with a value
of 3 are most likely to be dropped.