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40 Chapter 5 Network Preferences
Viewing or Changing IP Address, Subnet Mask, or Router Address
You can use the serversetup and networksetup commands to change a computer’s
TCP/IP settings.
Important: Changing a server’s IP address isn’t as simple as changing the TCP/IP
settings. You must first run the changeip utility to make sure necessary changes are
made throughout the system. See “Changing a Server’s IP Address” on page 39.
To list TCP/IP settings for a configuration:
$ sudo networksetup -getinfo "configuration"
Example:
$ networksetup -getinfo "Built-In Ethernet"
Manual Configuration
IP Address: 192.168.10.12
Subnet mask: 255.255.0.0
Router: 192.18.10.1
Ethernet Address: 1a:2b:3c:4d:5e:6f
To view TCP/IP settings for port en0:
$ serversetup -getDefaultinfo (devicename|"portname")
To view TCP/IP settings for a particular port or device:
$ serversetup -getInfo (devicename|"portname")
To change TCP/IP settings for a particular port or device:
$ sudo serversetup -setInfo (devicename|"portname") ipaddress subnetmask
router
To set manual TCP/IP information for a configuration:
$ sudo networksetup -setmanual "configuration" ipaddress subnetmask router
To validate an IP address:
$ serversetup -isValidIPAddress ipaddress
Displays 0 if the address is valid, 1 if it isn’t.
To validate a subnet mask:
$ serversetup -isValidSubnetMask subnetmask
To set a configuration to use DHCP:
$ sudo networksetup -setdhcp "configuration" [clientID]
To set a configuration to use DHCP with a manual IP address:
$ sudo networksetup -setmanualwithdhcprouter "configuration" ipaddress
To set a configuration to use BootP:
$ sudo networksetup -setbootp "configuration"
LL2354.book Page 40 Monday, October 20, 2003 9:47 AM