How to Customize DHCP Performance Options (Command Line)

If you change options with this procedure, the changed options are used only after the DHCP server is restarted.

1. Become superuser or assume a role or user name that is assigned to the DHCP Management profile.

   For more information about the DHCP Management profile, see Setting Up User Access to DHCP Commands.

   Roles contain authorizations and privileged commands. For more information about roles, see Configuring RBAC (Task Map) in System Administration Guide: Security Services.

2. Modify one or more performance options:

   # /usr/sbin/dhcpconfig -P keyword=value,keyword=value...

   keyword=value can be any of the following keywords:

   RELAY_HOPS=integer

   Specifies the maximum number of relay agent hops that can occur before the daemon drops the DHCP or BOOTP datagram.

   ICMP_VERIFY=TRUE/FALSE

   Enables or disables automatic duplicate IP address detection. Setting this keyword to FALSE is not recommended.

   RESCAN_INTERVAL=minutes

   Specifies the interval in minutes that the DHCP server should use to schedule the automatic rereading of the dhcptab information.

   OFFER_CACHE_TIMEOUT=seconds

   Specifies the number of seconds the DHCP server should cache the offers that are extended to discovering DHCP clients. The default setting is 10 seconds.

Example 15–1 Setting DHCP Performance Options

The following is an example of how to specify all the command options.

# dhcpconfig -P RELAY_HOPS=2,ICMP_VERIFY=TRUE,\
RESCAN_INTERVAL=30,OFFER_CACHE_TIMEOUT=20