Juniper JUNOSE 11.0.X MULTICAST ROUTING, Руководство по настройке

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Specifying the Add and Initial-Value Keywords
You can use the add keyword to add value to an existing parameter instance. For
example:
<# qosserviceone(bandwidth1, bandwidth2) #>
profile <# profileName ; '\n' #>
qos-parameter <# qosParameterName3 ; ' add ' ; bandwidth2 ; '\n' #>
<# endtmpl #>
When you specify parameter instances using the add keyword, you can also use the
initial-value keyword to specify an initial value. For example:
<# qosserviceone(bandwidth1, bandwidth2) #>
profile <# profileName ; '\n' #>
qos-parameter <# qosParameterName4 ; ' add ' ; bandwidth2 ;
' initial-value 1000000' ; '\n' #>
<# endtmpl #>
When you activate the service, Service Manager locates the existing QoS parameter
instance in the interface column. If Service Manager does not find a parameter
instance, it creates one with a value specified in the
initial-value keyword (in this
case, 100000). The value in the command is then added to the initial value. If an
existing parameter instance is found, Service Manager adds the value to the existing
interface.
For example, when you activate qosServiceOne as qosServiceOne(2000000,3000000),
Service Manager attempts to locate the parameter instance qosParameterName4 for
the subscriber's interface. If it finds a parameter instance, it adds bandwidth2
(3,000,000) to the current value. If Service Manager does not find a parameter
instance, it creates one with an initial value of 1,000,000 and adds 3,000,000. The
final parameter instance value is 4,000,000.
When deactivating the service, Service Manager locates the QoS parameter instance
and subtracts the value in the command from the existing instance value. If the
parameter is no longer referenced, the parameter instance is removed.
Modifying QoS Configurations with Service Manager
This section describes how to modify QoS configurations with Service Manager.
Modifying Parameter Instances
Service Manager activates services without considering current parameter instance
values. For example, when you deactivate a video service, Service Manager can add
5 Mbps to a parameter associated with the shaping rate of a video queue.
Similarly, Service Manager can deactivate services and restore parameter instances
to their previous value. For example, when you deactivate a video service, Service
Manager can subtract 5 Mbps from a parameter associated with the shaping rate of
a video queue.
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Referencing QoS Configurations in Service Definitions
JUNOSe 11.0.x Broadband Access Configuration Guide