Cisco ISE - Line Card ISE Configuration Manual page 64

How to Configure AToM VCs on the 4-Port ATM ISE Line Card
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Configuring CBR or UBR.1 Policing
This task describes how to configure CBR or UBR.1 policing.
SUMMARY STEPS
1.
2.
3.
4.
5.
DETAILED STEPS
Command or Action
Step 1
enable
Example:
Router> enable
Step 2
configure terminal
Example:
Router# configure terminal
Cisco IOS Release 12.0(27)S
64
Policing is supported on the 508 channels that can be used for cell packing or cell relay. The rest of
the channels cannot be policed. The FPGA does not police on AAL5 channels or in port mode.
When removing a two-level policy, you must remove the child service-policy before removing the
parent service-policy.
For VBR.1 and VBR.2 policies, the correct total number of cells dropped is obtained by summing
the statistics collected by the first and second bucket-exceed counters. The statistic of the first
bucket-exceed counter sometimes remains zero and cannot be used to represent the result of the first
bucket policing. This is due to the design of the policing function in the hardware, where the first
and second buckets operate in parallel and not in serial.
UBR.2 is not supported.
The policer is correct to an accuracy of 99 percent.
The range of CDVT on the 4-port ATM ISE line card is 1..1,000,000. The default value is 50,000.
It is recommended that you use a minimum CDVT value greater than 50, otherwise policing
accuracy will be less than 99 percent.
It is also recommended to use an MBS value of greater than 10 cells, otherwise policing accuracy
will be less than 99% for the SCR bucket.
The cell-based policer's burst tolerance on the 4-port ATM ISE line card is 1 second. If you
configure a PCR and SCR such that the MBS exceeds the limitation that can be configured on the
hardware, the policy will be rejected. You will be notified of the maximum MBS value that can be
configured with the given PCR and SCR values.
enable
configure terminal
policy-map policy-map-name
class class-default
policy rate pcr cps delay-tolerance cdvt conform-action transmit exceed-action drop
Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers
Purpose
Enables privileged EXEC mode.
Enter your password if prompted.
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Enters global configuration mode.