Cisco Cisco IOS Software Release 12.4(2)XB6 Références techniques

When the gw-accounting aaa command and the aaa accounting update newinfo command and 
keyword are activated, Cisco IOS software generates and sends an additional updated interim 
accounting record to the accounting server when a call leg is connected. All attributes (for example, 
h323-connect-time and backward-call-indicators (BCI)) available at the time of call connection are 
sent through this interim updated accounting record. 

When used with the periodic keyword, interim accounting records are sent periodically as defined 
by the number. The interim accounting record contains all of the accounting information recorded 
for that user up to the time the accounting record is sent.

When using both the newinfo and periodic keywords, interim accounting records are sent to the 
accounting server every time there is new accounting information to report, and accounting records 
are sent to the accounting server periodically as defined by the number. For example, if you 
configure the aaa accounting update newinfo periodic number command, all users currently 
logged in will continue to generate periodic interim accounting records while new users will 
generate accounting records based on the newinfo algorithm. 

Vendor-specific attributes (VSAs) such as h323-connect-time and backward-call-indicator (BCI) are 
transmitted in the interim update RADIUS message when the aaa accounting update newinfo 
command and keyword are enabled. 

Jitter is used to provide an interval of time between records so that the AAA server does not get 
overwhelmed by a constant stream of records. If certain applications require that periodic records 
be sent a exact intervals, you should disable jitter by setting it to 0. 

Using the aaa accounting update periodic command and keyword can cause heavy congestion when 
many users are logged into the network.

The following example sends PPP accounting records to a remote RADIUS server. When IPCP 
completes negotiation, this command sends an interim accounting record to the RADIUS server that 
includes the negotiated IP address for this user; it also sends periodic interim accounting records to the 
RADIUS server at 30-minute intervals.

aaa accounting network default start-stop group radius

aaa accounting update newinfo periodic 30

The following example sends periodic interim accounting records to the RADIUS server at 30-minute 
intervals and disables jitter:

aaa accounting update newinfo periodic 30 jitter maximum 0

Enables AAA accounting of requested services for billing or security 
purposes.

Enables VoIP gateway accounting through the AAA system.