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RADIUS Accounting Statistics for Subscriber Access Overview

The AAA Service Framework enables you to configure how the router collects and uses accounting statistics for subscriber management.

For example, you can specify when statistics collection is terminated, the order in which different accounting methods are used, the types of statistics collected, and how often statistics are collected. You can also configure the router to request that the RADIUS server immediately update the accounting statistics when certain events occur, such as when a subscriber logs in or when a change of authorization (CoA) occurs.

Subscriber management provides two levels of subscriber accounting—subscriber session and service session. In subscriber session accounting, the router collects statistics for the entire subscriber session. In service session accounting, the router collects statistics for specific service sessions for the subscriber.

Note: Subscriber management counts forwarded packets only. Dropped traffic (for example, as a result of a filter action) and control traffic are not included in the accounting statistics.

The router uses the RADIUS attributes and Juniper Networks VSAs listed in Table 1 to provide the accounting statistics for subscriber and service sessions. If the session has both IPv4 and IPv6 families enabled, the router reports statistics for both families.

RADIUS reports subscriber statistics as an aggregate of both IPv4 statistics and IPv6 statistics.

  • For an IPv4-only configuration, the standard RADIUS attributes report the IPv4 statistics and the IPv6 VSA results are all reported as 0.
  • For an IPv6-only configuration, the standard RADIUS attributes and the IPv6 VSA statistics are identical, both reporting the IPv6 statistics.
  • When both IPv4 and IPv6 are configured, the standard RADIUS attributes report the combined IPv4 and IPv6 statistics. The IPv6 VSAs report IPv6 statistics.

Table 1: RADIUS Attributes and VSAs Used for Per-Subscriber Session Accounting

Attribute Number

Attribute Name

Type of Statistics

26–151

IPv6-Acct-Input-Octets

IPv6

26–152

IPv6-Acct-Output-Octets

IPv6

26–153

IPv6-Acct-Input-Packets

IPv6

26–154

IPv6-Acct-Output-Packets

IPv6

26–155

IPv6-Acct-Input-Gigawords

IPv6

26–156

IPv6-Acct-Output-Gigawords

IPv6

47

Acct-Input-Packets

IPv4 and IPv6 aggregation

48

Acct-Output-Packets

IPv4 and IPv6 aggregation

52

Acct-Input-Gigawords

IPv4 and IPv6 aggregation

53

Acct-Output-Gigawords

IPv4 and IPv6 aggregation

Published: 2013-07-31