Enterasys Networks CSX7000 Manuel d'utilisateur télécharger pdf (Page 394)

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USER’S GUIDE

394 CyberSWITCH

If no data is received within the data timeout duration, the following events will occur:

•If Disconnect is configured, the CyberSWITCH will disconnect the call.

•If Use PPP Protocol is configured, the CyberSWITCH will assign the call to a PPP subsystem.

•If Use Terminal Mode is configured, the CyberSWITCH will assign the call to the terminal I/O

subsystem and/or the user-level authentication server.

ATA TIMEOUT VALUE

Determines how long (in seconds) the CyberSWITCH will wait to receive data during autosense

mode. If the configured time expires, the CyberSWITCH will take configured action for the

connection. The minimum value is 1 second; the maximum value is 60 seconds. The default is 30

seconds.

Note: This timer starts at the beginning of a call and includes the time for the modems to

negotiate (typically 10-12 seconds). Be sure to allow for this additional time to avoid the

Action on Data Timeout before negotiation is completed.

After terminal-user authentication, this timer restarts. The CyberSWITCH returns to

autosense mode again and if no data received, the user will need to reauthenticate.

ERMINAL SERVER SECURITY

Specifies which type of user-level authentication server to use for terminal mode connections. The

selections are: RADIUS, TACACS, ACE, Use Administrative Login or Do not allow terminal access. The

Use Administrative Login value will present terminal users with a normal CyberSWITCH admin

disconnect the call. The default is Do not allow terminal access.

BACKGROUND INFORMATION

This feature supports the ability to handle terminal mode connections via dial-up client software

packages, such as WIN95 Dial-up Networking. Terminal mode connections are useful for

authenticating remote modem users via user-level authentication, then providing PPP protocol

data communications. It also provides a means of system management using a remote console. For

X.25 users, it provides remote modem users a means of access to different X.25 services.

When an incoming connection is established to the CyberSWITCH, system software autosenses the

type of connection. The system looks at the first few bytes of received data and determines whether

the connection is terminal mode or PPP mode. If no data is received within a configurable amount

of time, the system takes action based on one of the following configured parameters:

• PPP Mode: normal CyberSWITCH authentication and data forwarding procedures apply to this

connection

• Terminal Mode: connection processed by CyberSWITCH I/O subsystem which handles charac-

ter-oriented data. Connection assigned to user-level authentication task. Authentication pro-

cess proceeds per configured user-level authentication parameters and method of operation.

If authentication fails, the connection is released as per the configured authentication

parameters.

If authentication succeeds, the authentication task completes its functions such as displaying

the message of the day. Once authenticated, control passes to a PPP subsystem and the

connection enters PPP mode. Device-level authentication and protocol stream handling

proceeds per configured device information.

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Enterasys Networks CSX7000 Manuel d'utilisateur Page 394

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