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Accounting

The RADIUS relay server’s clients (the WAPs) send standard accounting request messages to the RADIUS relay server. The accounting server processes the request and sends the results back to the RADIUS relay server, which then creates a RADIUS accounting response message and forwards the information to the client WAP.

For tracking purposes, the forwarding RADIUS relay server adds the Radius-Client-Address vendor-specific attribute (VSA 26-52) to the forwarded accounting request messages. The VSA indicates the RADIUS relay server’s IP address.

For information about using the SRC software with the RADIUS relay server to provide accounting, see RADIUS Relay Server and the SRC Software .

Table 45 shows the RADIUS attributes that must be included in accounting requests. The attributes uniquely identify subscribers.

Table 45: Required RADIUS Accounting Attributes

For RADIUS Acct-Start and Acct-Stop Messages	Description
Called-Station-id [30]	Subscriber’s WAP
Calling-Station-id [31]	Subscriber’s MAC address
For RADIUS Acct-On and Acct-Off Messages
Called-Station-id [30]	Subscriber’s WAP

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