Dell IDRAC6 User Manual page 124

The following is an example of how the command may be used to configure
desired LAN network properties.
racadm config -g cfgLanNetworking -o cfgNicEnable 1
racadm config -g cfgLanNetworking -o cfgNicIpAddress
192.168.0.120
racadm config -g cfgLanNetworking -o cfgNicNetmask
255.255.255.0
racadm config -g cfgLanNetworking -o cfgNicGateway
192.168.0.120
racadm config -g cfgLanNetworking -o cfgNicUseDHCP 0
racadm config -g cfgLanNetworking -o
cfgDNSServersFromDHCP 0
racadm config -g cfgLanNetworking -o cfgDNSServer1
192.168.0.5
racadm config -g cfgLanNetworking -o cfgDNSServer2
192.168.0.6
racadm config -g cfgLanNetworking -o
cfgDNSRegisterRac 1
racadm config -g cfgLanNetworking -o cfgDNSRacName
RAC-EK00002
racadm config -g cfgLanNetworking -o
cfgDNSDomainNameFromDHCP 0
racadm config -g cfgLanNetworking -o cfgDNSDomainName
MYDOMAIN
NOTE:
If cfgNicEnable is set to 0, the iDRAC6 LAN is disabled even if DHCP is
enabled.
124
Advanced iDRAC6 Configuration