Руководство Пользователя для Nortel 4000

Managing Remote Access Concentrators Using Annex Manager

Chapter 4    Setting Up RACs

4-22

•

Edit Modem

 displays the

Edit Modem

 window. Internal modem

definitions can be viewed and changed in the

Edit Modem

window. The fields in the

Edit Modem

 window apply to all calls

established on a 5399/8000 RAC or ISDN Primary Rate
Interface RAC, unless settings in the configuration file override
these values.

The

 Interface Options

 box displays information in the

Settings, Address

Assignment, Interface Protocol, AppleTalk, RLogin/Telnet

, and

Dedicated

 boxes.

•

The

Settings

 box displays address information for the ports you

selected:

•

The

Remote Address

 field contains the IP address for the host at

the remote end of the point-to-point (SLIP or PPP) link.

•

The

Subnet Mask

 field contains the RAC IP subnet mask. The

subnet mask defines which portion of the IP address is the
network, subnet, and host. Entering an incorrect subnet mask
can cause routing problems.

•

The

Address Assignment

 box allows a RAC to request an address

from a host-based server. The

Address Assignment

 buttons

control the source of the address assignment.

•

If you select the

Security Server

 button the RAC searches the

acp_dialup

 file for the user name of the remote client and sets the

remote address and other related values.

•

If the file contains a matching user name and remote address in
the

acp_dialup

 file, the RAC uses that value.

•

If the file does not contain a matching user name, the RAC uses
the local value. If the remote address is set to 0.0.0.0, the RAC
negotiates for the address with the remote PPP client. The
connection is denied for a remote SLIP client.

•

If you select the

dhcp

 button the RAC contacts a DHCP server

to request the PPP dialup addresses.