IP address question?

Question

I have 2 PCs saying they have the same IP address every time I turn them both on. (A previous DSL question)...I'm going to configure 1 PC to "use the following IP address" vs "obtaining an IP address automatically. My question is- if I assign 1 PC an IP address of the next higher last number, do I have to do anything in the "WINS" and "DNS" tabs after doing that. Or do I just assign an IP address and restart PC?


Here is an example of my settings (numbers are not exactly, but the last 2 octets are
IP add 344.300.1.50
Subnet Mask 555.555.0.0
Default gateway 344.300.0.1
DHCP & DNS Server 344.300.0.1

Also brand new to this, how do I communicate to people after reading their answers?

Answer 1

Turn on both computers.
Go to computer 1 and click the start button
Select run
Type in: cmd (or if the is Windows 95,98 or ME: command)
In the window that appears type: ipconfig /release
This will clear the IP address on the 1 computer
Repeat on second computer

Now that both computers have been cleared of IP inforamtion,
Go to computer 1 and type: ipconfig /renew
The computer will get a new IP address
Repeat on second computer

You should now have different IP addresses on each of the computers

Happy Interneting...

(Oh, to talk to someone, click on their screen name link right under their picture. If they have their profile set up to accept messages, you will be able to e-mail them)

Answer 2

It seems to me that you have a router in your system that has built-in DHCP functions. If so, on your computers, select the option for automatic IP address assignment and DNS settings (i.e. Obtain an IP address automatically and Obtain DNS server address automatically). Then, once the computers turn on, they will ask the DHCP server for a valid IP address and the DHCP server will make sure that IP addresses it assigns to them do not clash with each other. The sub-net mask and DNS settings will also be automatically set by the DHCP (dynamic host configuration protocol) server. If this doesn't solve the problem, it is likely that someone else on the network is setting their IP settings manually and are choosing an IP address that clashes with other devices on the network. If you have a wireless network (which I suspect you do), make sure that you make use of security settings (e.g. WPA-PSK and MAC Address Filtering) so that anyone nearby (e.g. neighbors) can't connect to your network. Consult your wireless router or access point's manual on how to do this.

If you still want to set your IP addresses manually, the settings you have given seem to be okay and assigning the other PC the next higher address should work. Leave the rest of the settings the same on each PC. You might also want to check that IP addresses you have assigned them are not in the range that the DHCP server will automatically assign to other devices on the network.



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Answer 3

Are you just going to connect these two PCs together? Or will both the PCs be a part of a larger network? If it is the first case, then read on.

Connect the two PCs. Set the IP addresses in a simple format.

For the first PC
IP x.x.x.y
Subnet MAsk 255.255.255.0
Default Gateway x.x.x.1

For the second PC
IP x.x.x.y+1
Subnet MAsk 255.255.255.0
Default Gateway x.x.x.1

Note : x.x.x represents the same octet combination

You dont have to configure Primary and Secondary DNS. Even it asks you to enter DNS address. Enter some random ip.

I hope i was helpful enough.

Answer 4

Are you using a router or a hub?
it sounds like your two computers are receiving the same IP address because they are accessing the same DSL modem with a properly configured hub or router.

Yes, you can assign an IP address to one computer but you have to use the numbers.
I am willing to bet your IP address is similiar to:
192.168.1.50
Subnet mask: 255.255.255.0
Default gateway: 192.168.1.1

Delete the DHCP address and leave the DNS address.
Don't bother with the wins information.

Go to your working computer.
go start -> run
type CMD
Type net config /all

copy down the DNS numbers

and enter them into the computer that you are assigning the an IP address to. You should be fine.

Sorry, you can't contact me.

Answer 5

That primarily depends if you are behind a router or not.
If it is just a private network and both are connected to a router (a cable modem is a router, too) then enable automatic for dhcp and disable wins completely.
To make sure you don't run in trouble with your router give your 2 computers different names. IBM used "asterix" and "idefix" for their mainframes here in Munich if I remeber correctly.

If those two computers are not connected to the internet you can set non-public IP adresses for your computers like another answerer sugested.. I normally use 192.168.64.1 and ...2

If you only have one plug into your router or cable modem you can connect one of your computers directly to the router and let the router give you an IP. On the network card that you need to connect to your second computer you set up the DHCP server service and set the card to a fixed IP somewhere in the range of 192.168.x.x. The DHCP service must be set to distribute in the same adress range.
I set the DHCP server IP to 192.168.64.1 and the adress range is 192.168.64.0/24.
That will usually lead to a situation like this:
Computer #1 gets a public IP of your provider for instance 31.36.233.11 (that is a random IP I just invented) and on the local network it has the fixed IP 192.168.64.1.
Now... Your DHCP service will only distribute local IP adresses over network cards with a fixed adress your second computer will get one out of 192.168.64.2 - 192.168.64.254. (under most circumstances it will always be 192.168.64.2)

Answer 6

you need a router or 2 nics in one computer one for the modem and one for the network turn on internet connection sharing and it will assign ip automatically. i work dsl tech support i don't know what modem you have but if it is a single user you cannot just assign a manual ip address and have it work because the modem only supports 1 ip address. you cannot do it the way that you are trying to do it.

Answer 7

They both have the same address because that is the address provided by the router. Log in to your router and find out the available ip's is gives out, you can change that as well. You only need to change the ip. The rest should stay the same, but I'm not sure why you want to change them. Does it just bug you to have the same ip? You only get one ip from your isp and your router takes it and "routs" it. Contact me and give me details of what you are trying to accomplish.

Answer 8

WINS and DNS are only used for dynamic addressing. Assign the IPs manually and restart. Also make sure the computer names are different.

Answer 9

Um... First off, you are making your network way to complacated. all you need to do is set up the IP and Subnet Mask to make a network. Here is an example.
PC 1
125.000.000.001
255.255.000.000
PC 2
125.000.000.002
255.255.000.000

You can also just use the automatic setup for new networks. I know you don't get to force the IP that way but if you are working with a router, it is better that way.

To comunicate with those that answer your questions... Add "@yahoo.com" without the quots.

Answer 10

hi,
are both pc's set to obtain ip automatically?
do either have alternate configurations for tcp/ip?
what are the actual private ip, subnetmask, and default gateway?
does either machine have a second nic?
has either machine had a recent nic install? the reason i ask this, is i have seen this when an old nic that has been removed, keeps registry entries for tcp/ip settings.