Integrated Dell Remote Access Controller 9 Version 3.15.15.15 User's Guide

DHCP options

DHCPv4 allows many globally defined parameters to be passed to the DHCP clients. Each parameter is known as a DHCP option. Each option is identified with an option tag, which is a 1-byte value. Option tags 0 and 255 are reserved for padding and end of options, respectively. All other values are available for defining options.

option myname code 43 = text;
subnet 192.168.0.0 netmask 255.255.255.0 {
# default gateway
		option routers 192.168.0.1;
    option subnet-mask 255.255.255.0;
    option nis-domain  "domain.org";
    option domain-name "domain.org";
    option domain-name-servers 192.168.1.1;
    option time-offset -18000; #Eastern Standard Time
    option vendor-class-identifier "iDRAC";
    set vendor-string = option vendor-class-identifier;
    option myname "-f system_config.xml -i 192.168.0.130 -u user -p password -n cifs -s 2 -d 0 -t 500"; 

The DHCP Option 60 identifies and associates a DHCP client with a particular vendor. Any DHCP server configured to take action based on a client’s vendor ID should have Option 60 and Option 43 configured. With Dell PowerEdge servers, the iDRAC identifies itself with vendor ID: iDRAC. Therefore, you must add a new ‘Vendor Class’ and create a ‘scope option’ under it for ‘code 60,’ and then enable the new scope option for the DHCP server.