
Configuring Dial Services
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You configure modems for asynchronous communication in the Async Hayes
Modem Interface window. You can access this window only if the WAN Serial
Interface Type is Asynchronous and the Line Media Type is Hayes. Refer to
Chapter 1 to learn how to set these two parameters. Refer to Chapter 8 for
instructions on modifying your modem configuration.
The BayStack ARN router has an optional V.34 Modem Adapter Module that
requires you to configure an AT initialization command whether the interface is
synchronous or asynchronous.
RADIUS Accounting Services
As networks grow to accommodate more remote dial-in users, network security,
network use, and billing become more difficult to manage. Remote Authentication
Dial-In User Service (RADIUS) is an Internet draft specification that solves these
issues by centralizing security and accounting information. Centralizing these
services improves security and provides a solution that can adapt to the changing
size and needs of the remote user and service providers.
RADIUS operates between a client and a server. The router is the RADIUS client.
RADIUS accounting requires that you configure one of the three dial services.
The dial service enables the router to activate a dial-up connection for RADIUS
calls. Dial-up calls are active for a limited time period; therefore, the RADIUS
server can measure the duration of the call and how many packets were
transmitted to determine billing charges. To learn more about RADIUS, refer to
Configuring RADIUS.
For accounting services, you can configure a dial service first or RADIUS first.
The following Bay Networks platforms can operate as a RADIUS client:
• Backbone Link Node (BLN)
• Backbone Concentrator Node
(BCN)
• Access Stack Node (ASN)
Note: The BLN, BCN, and ASN also support RADIUS authentication, but
only with dial-on-demand service. Refer to Chapter 5 for more information.
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