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Home » Forums » Forum Archives » Networking and Internet Sharing » Topic # 1669

Wont ping other machine
Tobias Feb-05-02 07:23 PM
I have Win XP on main system and Win 98se on my laptop.I've hooked the machines via crossover and straight through cable via a hub.Machines will talk to each other via netbui but will in no way shape or form talk via TCP/ip.Both machines can use my cable internet when I release the ip's and switch connections so TCP is good.They will just not talk to each other when I assign IP addresses
to each machine.I have them using same sub net mask and diff IP's.I shouldnt need a gateway,does it matter which ip's I assign?Im using 169.122.123.4 on laptop and 169.122.123.5 on main machine with submask 255.255.255.0.Any ideas??

Thanks!


1. RE: Wont ping other machine
lbyard Feb-05-02 08:11 PM
In response to message 0
>I've hooked the machines via crossover and straight through cable via a hub.

One usually uses straight-thru cables to connect PCs to a hub, but culd use a crossover cable to connect a PC to an uplink port. See http://duxcw.com/faq/network/uplink.htm.

Use 192.168.0.1 and 192.168.0.2. IP addresses in the range of 169.254.0.0 -169.254.255.255 are reserved for Automatic Private IP Addressing.
See http://duxcw.com/faq/network/privip.htm.

Can you ping one computer from the other? Open a DOS window and:

C:\>ping 192.168.0.1

If so, you may need hosts tables for static IP name resolution. Open C:\windows hosts.sam for an example. I have found that XP does not like NetBEUI running on the network. Try removing it. If you are sharing the cable connection with XP (or Win 98SE), Internet Connection Sharing will assign the instance of TCP/IP bound to the network adapter to the local network a static IP of 192.168.01. the client should be set to get itís IP automatically from the DHCP server which is port of ICS. If you are using a router, the best way to do it (http://duxcw.com/faq/ics/waysshare.htm, both PCs should be set to get the IP automatically from the router. Larry


2. RE: Wont ping other machine
Tobias Feb-05-02 09:47 PM
In response to message 1
Hey Larry,

Ya I've connected the machines (from machine to machine via the cross over)and use the straight cables when goin through the hub,sorry 'bout the confusion.I've tied different ip's including the ones you've suggested when I had ICS running.It's funny though, although my laptop would pick up an IP from the main machine using ICS,still could not ping the main machine.I finally came to the conclusion that Zone Alarm had something to dowith all of this and uninstalled it to no avail.I've set up networks before but I just can't get this laptop and my main system talking over tcp/ip.I'm running XP on the main machine and netbui works great between the two.I've tried different nics in both machines although the only difference still is that the nic in the laptop is 10 base T while the other in the main machine or host is 10/100.Shouldn't make a difference.It must be some setting I have to mess with for the 10 base T maybe....I'm stumped.


3. RE: Wont ping other machine
lbyard Feb-06-02 02:53 PM
In response to message 2
>although my laptop would pick up an IP from the main machine using ICS.

Are you sure of that. If the IP starts with 169 then it most likely is not. See http://duxcw.com/faq/network/autoip.htm.

>I've connected the machines (from machine to machine via the cross over)and use the straight cables when goin through the hub

Until the problem is fixed, the hardware should not be changed. I would suggest that if the crossover cable is custom made that there is a higher probability that it is not as reliable as a stock straight-thru cable. If the straight-thru cables are also custom made, it does not make a difference which configuration you use except the crossover has the advantage of fewer things in the equation and the hub has the advantage of the LEDs for troubleshooting.

I have seen problems mixing some 10 MHz NICs with some 100 MHz NICs.

I lot of times uninstalling and reinstalling everything network fixes problems. Other times that is not sufficient and the TCP stack has to be reworked (http://duxcw.com/faq/network/winsock.htm). Larry


4. RE: Wont ping other machine
Tobias Feb-07-02 09:43 PM
In response to message 3
Thanks again for the input Larry.I finally solved it by changing network cards on the main machine and changing from auto detect to 10mps.Pinging away happily now.All this to play Quake 2 Lan on the laptop:)

Toby


5. RE: Wont ping other machine
lbyard Feb-08-02 06:02 PM
In response to message 4
Yes, that solution is in this forum at least once in addition to your post. Larry

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