Using Radius To Deactivate Service Sessions; Setting Thresholds - Juniper JUNOSE SOFTWARE FOR E SERIES 11.3.X - BROADBAND ACCESS CONFIGURATION GUIDE 2010-10-12 Configuration Manual

Using RADIUS to Deactivate Service Sessions

Copyright © 2010, Juniper Networks, Inc.
A service session can be deactivated by a CoA-Request message or when a subscriber
logs out of a RADIUS-activated service session. If the subscriber logs off the router, Service
Manager deactivates that subscriber session and all associated service sessions.
RADIUS also supports attributes that you can use to manage deactivation of service
sessions. You can:
Set time or volume thresholds for the service
Use the Deactivate-Service RADIUS attribute

Setting Thresholds

You can set a threshold for the session by including one or both of the following attributes
in the RADIUS record:
NOTE: The Service-Timeout and Service-Volume attributes use values
captured by the Service Manager statistics feature to determine when a
threshold is exceeded. Therefore, you must configure and enable statistics
collection to use these attributes. See "Configuring Service Manager
Statistics" on page 677.
Service-Timeout—The number of seconds that the service session is active. You can
specify a number in the range 0–16777215. Values greater than 16777215 are recycled,
starting from the initial value of 0. For example, if you specify the value for
Service-Timeout VSA as 16777218, this value is equivalent to 2 for this VSA. A value of
0 indicates that the session never times out. A particular Service-Timeout VSA can be
used by a maximum of 2000 services.
The service-timeout threshold accuracy is within 30 seconds of the specified value.
Service-Volume—The total number of MB of traffic that can use the service session.
You can specify a number in the range 0–16777215 MB. Values greater than 16777215
are recycled, starting from the initial value of 0. A value of 0 indicates that there is no
limit to the amount of traffic for the session. For example, if you specify the value for
Service-Timeout and Service-Volume VSAs as 16777216 and 16777217, these values
are equivalent to 0 and 1 respectively for these VSAs. A particular Service-Volume VSA
can be used by a maximum of 1000 services.
NOTE: Service Manager terminates a session when the output byte count
exceeds the configured service-volume threshold. The output byte count
is captured by the output-stat-clacl string in the classifier list variable that
you configure to collect statistics. See "Configuring Service Manager
Statistics" on page 677.
The service-volume threshold accuracy is based on a 10-second period. Service Manager
does not immediately deactivate a service session when the output byte count reaches
Chapter 27: Configuring Service Manager
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