How to change IP address from command prompt

Of course you can change the IP from the command prompt.

The command is:
to change IP and default gateway:
netsh int ip set address "local area connection" static 192.168.0.101 255.255.255.0 192.168.0.254 1

to change DNS:
netsh int ip set dns "local area connection" static 192.168.0.254 primary

This is assuming 3 things.
1) The network adapter you're trying to change the IP for is "local area connection". It could also be "local area connection 2" or "wireless network connection". Look in your control panel for the correct name
2) The IP you want to set is 192.168.0.101, change this to whatever IP to want to use.
3) The default gateway and dns are the same IP. If you are using some kind of router they usually are. Change this to match your network config found with the command ipconfig /all

You will need to run both commands to change the IP.

To change to static IP:
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This changes the IP address and Default Gateway:
netsh int ip set address "local area connection" static {192.168.0.101} 255.255.255.0 {192.168.0.254} 1

This changes DNS:
netsh int ip set dns "local area connection" static {192.168.0.254} primary
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You will want to change the values between the curly braces, but do not use the curly braces when you run the command.
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To change the interface back to DHCP (get IP automatically) use this command:
netsh int ip set address "local area connection" dhcp

DNS:
netsh int ip set dns "local area connection" dhcp
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I would recommend you view the help for this command, it will shed much more insight on what you're actually doing.
The netsh command allows you to change many things such the firewall configuration to the ip addresses.
You can get help for the netsh command by adding each word of the command and adding /?. For example:

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C:\Documents and Settings\2xod>netsh /?

Usage: netsh [-a AliasFile] [-c Context] [-r RemoteMachine]
[Command | -f ScriptFile]

The following commands are available:

Commands in this context:
? - Displays a list of commands.
add - Adds a configuration entry to a list of entries.
bridge - Changes to the `netsh bridge' context.
delete - Deletes a configuration entry from a list of entries.
diag - Changes to the `netsh diag' context.
dump - Displays a configuration script.
exec - Runs a script file.
firewall - Changes to the `netsh firewall' context.
help - Displays a list of commands.
interface - Changes to the `netsh interface' context.
ras - Changes to the `netsh ras' context.
routing - Changes to the `netsh routing' context.
set - Updates configuration settings.
show - Displays information.
winsock - Changes to the `netsh winsock' context.

The following sub-contexts are available:
bridge diag firewall interface ras routing winsock

To view help for a command, type the command, followed by a space, and then
type ?.

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C:\Documents and Settings\2xod>netsh int /?

The following commands are available:

Commands in this context:
? - Displays a list of commands.
add - Adds a configuration entry to a table.
delete - Deletes a configuration entry from a table.
dump - Displays a configuration script.
help - Displays a list of commands.
ip - Changes to the `netsh interface ip' context.
ipv6 - Changes to the `netsh interface ipv6' context.
portproxy - Changes to the `netsh interface portproxy' context.
reset - Resets information.
set - Sets configuration information.
show - Displays information.

The following sub-contexts are available:
ip ipv6 portproxy

To view help for a command, type the command, followed by a space, and then
type ?.

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C:\Documents and Settings\2xod>netsh int ip /?

The following commands are available:

Commands in this context:
? - Displays a list of commands.
add - Adds a configuration entry to a table.
delete - Deletes a configuration entry from a table.
dump - Displays a configuration script.
help - Displays a list of commands.
reset - Resets TCP/IP and related components to a clean state.
set - Sets configuration information.
show - Displays information.

To view help for a command, type the command, followed by a space, and then type ?.

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C:\Documents and Settings\2xod>netsh int ip set /?

The following commands are available:

Commands in this context:
set address - Sets the IP address or default gateway to the specified interface.
set dns - Sets DNS server mode and addresses.
set wins - Sets WINS server mode and addresses.

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C:\Documents and Settings\2xod>netsh int ip set address /?

Usage: set address [name=]<string>
[[source=]dhcp |
[source=] static [addr=]IP address [mask=]IP subnet mask]
[[gateway=]<IP address>|none [gwmetric=]integer]

Parameters:

Tag Value
name - The name of the interface.
source - One of the following values:
dhcp: Sets DHCP as the source for configuring IP
addresses for the specific interface.
static: Sets the source for configuring IP addresses
to local static configuration.

gateway - One of the following values:
<IP address>: A specific default gateway for the
static IP address you are setting.
none: No default gateways are set.
gwmetric - The metric for the default gateway. This field should
not be set if gateway is set to 'none'.
The following options are used only if source is 'static':

addr - An IP address for the specified interface.
mask - The subnet mask for the specified IP address.

Remarks: Used to change the IP address configuration mode from either DHCP to
static mode or static mode to DHCP. Adds IP addresses on an
interface with static IP address or adds default gateways.

Examples:

set address name="Local Area Connection" source=dhcp
set address local static 10.0.0.9 255.0.0.0 10.0.0.1 1


C:\Documents and Settings\2xod>
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If you ever mess up the configuration you can always modify the settings through the graphical interface of the control panel. From Start > Control Panel > Switch to Classic View, and open Network Connections


Before running these commands, look at your existing (working) IP configuration with the ipconfig command:
This will show you the Default Gateway and DNS entries to put in the commands above where the {braces} are.
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C:\Documents and Settings\2xod>ipconfig /all

Windows IP Configuration

Host Name . . . . . . . . . . . . : computar
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Unknown
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Intel(R) PRO/1000 XT Server Adapter
Physical Address. . . . . . . . . : 00-02-B3-B5-D6-J3
Dhcp Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 192.168.0.101
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.0.2
DNS Servers . . . . . . . . . . . : 192.168.0.2

C:\Documents and Settings\2xod>
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please solve my problem