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RADIUS Overview

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RADIUS Accounting

You configure RADIUS accounting on a slot-by-slot basis. Therefore, a call

designated for a RADIUS-configured slot performs RADIUS accounting.

The RADIUS accounting server calculates billing charges for a communication

session between the remote user and the client. The RADIUS client sends

information to the server, such as the status of each call and the number of packets

transmitted during the session. Using this data, the server determines billing

charges, which the network administrator can use to manage network costs.

An accounting session is the time during which the remote user communicates

with the client. The session begins when the client passes an accounting request

from the remote user to the server, with an accounting status byte set to start. The

session ends when the client sends a second request with the accounting status

byte set to stop. Multiple accounting sessions can occur simultaneously if there

are multiple dial-up connections.

The client sends accounting requests only to the server configured for accounting,

enabling you to use different servers for accounting and authentication.

If the client cannot reach the primary server after several attempts, and you

configured an alternate server, the client sends the accounting request to the

alternate server. If an accounting session starts with the primary server, and this

server goes down, the session is continued with the alternate server. Unless the

primary server recovers, the request to end the session is then sent to the alternate

server. To accurately determine billing charges, the network administrator collects

information from all accounting servers.

Using IP and IPX Unnumbered Protocols for PPP Connections

The RADIUS client supports IP and IPX unnumbered interfaces, meaning that the

circuit’s interface address is 0.0.0.0. All remote users that dial in to the same slot

on the client receive the same unnumbered protocol configuration.

Note:

Unlike the circuit’s address, the RADIUS client’s address is a numbered

address.

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Avaya Configuring RADIUS Manual de usuario Pagina 25