got this from a site. not my own.
for cable modems.
Method 1
Step 1: Release Your IP
a. Press Start>Run
b. Type in either 'command' or 'cmd' (for XP), without the quotes
c. In DOS Prompt type in 'ipconfig /release' without the quotes
d. keep DOS open for later use (explained later)
Step 2: Lose Connection with your DHCP Server
a. Right click on your 'My Network Places' or 'Network Neighborhood' (located on your desktop) And select Properties
b. Select your Cable modem or NIC, Right click on it and select properties
c. In the General tab, select Internet Protocole (TCP/IP) and hit properties
d. Select 'Use the fallowing IP address' And type in a random IP
e. Type in a random 'Subnet Mask'
f. Apply New Settings
Step 3: Reastablish Connection with your DHCP Server
a. Right click on your Cable modem or NIC and select properties
b. In the General tab select 'Obtain an IP address automatically'
c. Select 'Obtain DNS Server address automatically'
d. Apply your settings and exit out of Cable modem's or NIC's Properties
Step 4: Getting New IP Address
a. Go to your DOS Prompt, if you closed it, go to step 1
b. Type in 'ipconfig /renew' into DOS Prompt (without quotes)
c. Enjoy your new IP
about:
Basically what this does is disconnects your DHCP server and you lose your IP. But by setting obtain your IP
automatically again, it reconnects with the DHCP server. Then when you renew your IP in DOS it assigns you
with a new IP. This turorial is based on Windows XP graphical user interface (GUI).And has only been tested
on cable modems. There is a possible chance that it will work with DSL. Use at your own risk.
Method 2
1. Getting your IP range - Getting information about your ip range is not difficult, I recomend using Neo Trace on
your own ip. But for our test just look at your ip address, say it's 24.193.110.13 you can definetly use the ip's
found between 24.193.110.1 [new ip] 24.193.110.255, dont use x.x.x.1 or x.x.x.255. To find your ip simply open a
dos/command prompt window and type ipconfig at the prompt, look for "IP Address. . . . . . . . . . . . : x.x.x.x".
2. Subnet Mask, Default Gateway, DHCP Server - These are very easy to find, just open a dos/command prompt window
and type 'ipconfig /all' without the ' '. You should see something like this:
Windows IP Configuration
Host Name . . . . . . . . . . . . : My Computer Name Here
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Unknown
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
Ethernet adapter Local Area Connection:
Connection-specific DNS Suffix . : xxxx.xx.x
Description . . . . . . . . . . . : NETGEAR FA310TX Fast Ethernet Adapter (NGRPCI)
Physical Address. . . . . . . . . : XX-XX-XX-XX-XX-XX
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 24.xxx.xxx.xx
Subnet Mask . . . . . . . . . . . : 255.255.240.0
Default Gateway . . . . . . . . . : 24.xxx.xxx.x
DHCP Server . . . . . . . . . . . : 24.xx.xxx.xx
DNS Servers . . . . . . . . . . . : 24.xx.xxx.xxx
24.xx.xxx.xx
24.xx.xxx.xxx
Lease Obtained. . . . . . . . . . : Monday, January 20, 2003 4:44:08 PM
Lease Expires . . . . . . . . . . : Tuesday, January 21, 2003 3:43:16 AM
This is all the information you will need for now, I sugest you either keep your dos/command prompt window open or
copy & paste the information somewhere, to copy right click the window and select text and click once.
III. Changing your IP Address
To change your ip address first pick any ip you like out of your ip range and remember it or write it down. It is usualy
a good idea to make sure the ip is dead (except for what we are going to do later on) so just ping it via "ping x.x.x.x"
and if it times out then you can use it. Now go to My Computer, then Control Panel. In Control Panel select
Network Connections and pick your active connection, probably Local Area Connection or your ISP name. Open that
Connection by double clicking on the icon in Network Connections, then select Properties under the General Tab. In the
new window that pops up select Internet Protocol (TCP/IP) and click properties, it's under the general tab. In this new
window select the General tab and choose "Use the following IP address" and for the IP address enter the ip you would
like to use (the one you picked from your subnet earlier) and for the Subnet Mask enter the subnet mask you got when
your ran ipconfig /all, same goes for the Default Gateway. Now select "Use the following DNS server addresses" and enter
the information you got earlier. Now just click OK. Test that it worked, try to refresh a website and if it works you
know everything is okay and you are connected. To make sure the change worked type ipconfig agein and the ip address
should have changed to your new one.
[Edited Batty]Do mention the Source to credit the original author ...