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JUNOSe 11.1.x Policy Management Configuration Guide
Policy Parameter Reference-Rate
You can use a policy parameter reference-rate to derive the rates in rate-limit profiles.
You can configure rate-limit profiles as a percentage of this parameter. The system
calculates the rate at the time of attachment using the value assigned to this parameter
for that interface.
If you do not specify a value for this parameter in Interface Configuration mode, then
the Global configuration value is used.
You can modify the value of this parameter in Global Configuration mode or Interface
Configuration mode. In Interface Configuration mode, you can change the value
using the increase keyword.
If you use the no version of the command in Interface Configuration mode, the
parameter value is set to the global default value. The no version of the command
with the increase keyword decrements the value. The parameter value cannot have
a negative value. The no version of the command in Global Configuration mode
deletes the parameter if it is not used anywhere else.
Modified values affect the rates in the rate-limit profiles that are using the
reference-rate parameter.
NOTE: Beginning with JUNOSe Release 10.3.x, you cannot modify the policy
reference-rate parameter in Interface Configuration mode, if the percent-based
rate-limit profile is used in external parent groups. If you attempt to change the
reference-rate parameter that is referenced by multiple classification operations using
the policy-parameter reference-rate command at the interface level, an error
message is displayed in the CLI interface. This restriction exists because multiple
interfaces might refer to the same external parent group resource and to prevent
such interfaces from losing their reference to the older external parent group
resources. However, you can modify the percent-based rate-limit profiles for external
parent groups at the hierarchical rate-limit profile level.
Specifying Rates Within Rate-Limit Profiles
Within a rate-limit profile you can specify the rate either as a percentage or a specific
value. In two-rate rate-limit profiles, you can select committed rate and peak rate.
You can specify one rate in terms of percentage and another as a specific value. Also,
one rate can be a percentage of one parameter and another rate can be a percentage
of another parameter.
If the rate in a rate-limit profile is x percent, then the actual rate can be calculated
from a parameter value as:
Actual rate (in bits per second) = (parameter value *x)/100
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Percent-Based Rates for Rate-Limit Profiles Overview
values. You do not have to specify values each time you attach a policy; if you
do not specify interface-specific, the system uses the global value.
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