Nortel 4000 用户指南

Managing Remote Access Concentrators Using Annex Manager

Chapter 4    Setting Up RACs

4-8

•

Broadcast On

 and

Off

 determine whether or not a RAC

broadcasts for security validation if the preferred security
servers are not available.

–

On

 activates the ACP security server, including security for

AppleTalk, CLI, and SLIP/PPP connections.

–

Off

 deactivates security.

If the selected RAC uses these security systems,

On

 is selected when

the window first appears. In this case, the

enable_security

parameter

is activated. If you change the setting to

Off

, Annex Manager

deactivates security but does not change the

enable_security

 parameter

setting.

The

DHCP

 box provides host information and broadcast message settings

for RAC DHCP. It includes the following fields and buttons:

•

Preferred Host

 contains the IP address of the DHCP server that

the client attempts to use as the primary source for DHCP
services.

•

Alternate Host

 contains the IP address of the DHCP server that

the client attempts to use as a backup source for DHCP services
when the primary DHCP server does not respond to the backup
security server.

The DHCP fields are optional and may be 0.0.0.0. When enabled, the
client broadcasts DHCP messages.

•

Broadcast On

 and

Off

 determine whether or not a RAC

broadcasts for a DHCP server if the preferred DHCP servers
are not available.

Click

On

 to activate the ACP security server.

•

DHCP parameters include

DHCP_broadcast

,

pref_DHCP1_addr

,

and

pref_DHCP2addr

.