DHCP Manager Help

 

Overview

Servers and Relays
  DHCP Config
  BOOTP Config
  Net Config
DHCP Services
    Hops
    Verbose
    Log Trans
    Detect Addr
    Reload
    Update DNS
    Timeout DNS
    Cache
    BOOTP
    Interfaces
    Addresses
  BOOTP Services

Addresses

Macros

Options

How To..

Menus

Index

   

 

Modifying Service Options
on a DHCP Server

After the initial configuration, choose Modify in the Service menu to customize additional settings for the DHCP server. Changes you make here become the default settings used by the server in this session and each subsequent session.

Use the Modify Service Options dialog box to configure the following options.

Maximum Relay Agent Hops
Specify the maximum number of relay hops that can occur before the DHCP server drops the request. The default is 4.
Verbose Log Messages
The DHCP daemon writes messages to the syslogd facility. In verbose mode, the DHCP daemon displays more messages than in non-verbose mode. This can reduce efficiency due to the time taken to write and display the messages. The default is for non-verbose mode.
Log Transactions to syslog Facility
Select whether to have the DHCP daemon log transactions using syslogd, and select an integer from 0 through 7 to specify the local syslog facility. The local syslog facility can be used to selectively view transaction messages generated by the DHCP daemon. Transactions include all DHCP messages between the daemon and clients. This feature may be useful in troubleshooting problems with DHCP.
Detect Duplicate IP Addresses By default, the DHCP server pings an IP address before offering it to a DHCP or BOOTP client to verify that the address is not in use by another client. Uncheck the box to disable this action. (Disabling this feature is not recommended.)
Reload dhcptab Specify the interval, in minutes, that the DHCP server should use to schedule the rereading of the dhcptab information.

The DHCP server reads the dhcptab at startup and not again until told to do so.

Typically, the DHCP Manager causes the server to reread the dhcptab whenever you make a change to the data. The default is to turn off this option to avoid needless re-initialization of the dhcptab.

Update DNS host information Select this option if this DHCP server supports clients that can specify their host names, and you want to have those host names added to the DNS tables. The DNS server must be set up to accept update requests from the DHCP server. See the Solaris DHCP Administration Guide for more information.
Timeout DNS update Specify the number of seconds to wait for a response from the DNS server before timing out. The default is 15 seconds. This option is available only if you selected Update DNS host information.
Cache Offers
Specify the number of seconds the server will hold open the offer to a client request for configuration. The default is 10 seconds.

You can increase this time to compensate for slow performance on a slow network.

BOOTP Compatibility
Select whether to allow the DHCP server to operate in BOOTP compatibility mode. In this mode, the DHCP server will respond to requests for configuration from BOOTP clients.
None Do not support BOOTP clients.

Automatic Automatically allocate permanent IP addresses to any requesting BOOTP clients.
Manual Respond only to clients that have been assigned a reserved address in the server's network tables.
Interfaces Click the Interfaces tab to choose which network interfaces the DHCP server will monitor.

The interfaces are listed by device name and network IP address. Use the arrow keys to remove or restore a network interface to the list of monitored interfaces.

The default is to allow the server to monitor all network interfaces.

Addresses Click the Addresses tab to choose which server addresses the DHCP server will own.

The DHCP server will manage all client records that are owned by the server addresses listed.

The default is to manage records owned by the server's primary IP address.

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