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Prerequisites for ISG Accounting
Prerequisites for ISG Accounting
For information about release and platform support, see the
section on page
Restrictions for ISG Accounting
ISG accounting supports only the RADIUS protocol.
If authentication, authorization, and accounting (AAA) broadcast accounting is used in conjunction with
periodic accounting, you cannot configure different accounting periods for different accounting groups.
Information About ISG Accounting
Before you configure ISG accounting, you should understand the following concepts:
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Overview of ISG Accounting
ISG supports per-session, per-service, and per-flow accounting. Per-session accounting is the aggregate
of all the flow traffic for a session. Per-session accounting can be enabled in a user profile. Per-service
accounting can be enabled in a service profile or service policy map.
Per-flow accounting, which accounts for a subset of session traffic as defined by a traffic class, is enabled
in a service profile or service policy map. When per-flow accounting is configured, the
Parent-Session-ID vendor-specific attribute (VSA) is included in accounting records so that per-session
and per-flow accounting records can be correlated in the RADIUS server.
When accounting is configured in a user profile, the service name attribute is not included in accounting
records.
Session accounting is enabled if the aaa accounting network default command is configured and a
AAA method list is specified. (It is recommended that you use a named method list rather than the
default method list.) Flow accounting is disabled by default and will take place only if a AAA method
list is specified in the service profile or service policy map. ISG accounting sends Accounting-Start,
interim, and Accounting-Stop records to the specified AAA method list.
Per-service accounting allows RADIUS to track when services become active and stop within a
subscriber session. Per-service accounting is the aggregate of all flow traffic for the duration of the
service. Using this feature, the router includes all activated services for the session in a single accounting
start message. When per-service accounting is configured, the service name and Parent-Session-ID
attributes are included in accounting records.
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24.
Overview of ISG Accounting, page 2
Accounting Records, page 3
Interim Accounting Updates, page 3
Broadcast Accounting, page 3
Postpaid Tariff Switching, page 4
Configuring ISG Accounting
"Feature Information for ISG Accounting"
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