New router Ko'd Lan.....

My original setup was this:
Both systems running Xp...
first comp connected to internet via internal dialup modem.
Second comp was using internet connection sharing to get online.
Both were networked through a linksys 4port hub.Everything worked fine....Untill

Got broadband....
Now cable comes from modem(D-Link DCM-200) into GigaFast EE400-R 4port router.Which in turn each comp is connected to.Each comp connects to the internet just fine,but can not see each other any longer.Ive tried to set up a new network with the wizard..no luck...IP addy's on both comps are identical all but the last two #'s...one ends in 17 and the other 18.
When I go into my router settings,The DHCP client list shows both machines..and IP addys' are as stated as above,and the MAC addy's are the same save the last two #' which are 57 on one and 9B on the other...I'm at a loss...any Ideas?
Cheers
~Noc~

 

......Anyone.....??

 

Hi,

OK, I'll take a stab at it

For this example, I'll assume that your IP addresses are 192.168.0.17 and 192.168.0.18 - substitute yours below.

Open a command line prompt on the PC with IP address 192.168.0.17 and type the command:

Ping 192.168.0.18<Enter>

You should get a listing something like this:

Pinging 192.168.0.18 with 32 bytes of data:

Reply from 192.168.0.18: bytes=32 time=1ms TTL=64
Reply from 192.168.0.18: bytes=32 time=1ms TTL=64
Reply from 192.168.0.18: bytes=32 time=1ms TTL=64
Reply from 192.168.0.18: bytes=32 time=1ms TTL=64

Ping statistics for 192.168.0.18:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 1ms, Maximum = 1ms, Average = 1ms

The exact values aren't as important as whether or not you get the replies at all. If you do, then the PC at 192.168.0.17 can communicate with that at 192.168.0.18, and that's good.

Now, do the same test in the other direction.

If you get "Request timed out errors" from either direction (or both), then something is interfering with communications on the network... maybe ICS? Try disabling it.

[Optional] Another thing you can try is to connect your original hub to the router, and then connect the two PCs to the original hub to put them "closer" to one another than to the router, just to see. It's not likely that this will resolve the problem, but you already have the hardware to do it, and putting both PCs on the same cabling segment changes the LAN topology a little. PC to PC communications with just the nat/router/switch in place causes network data from 192.168.0.17 addressed to 192.168.0.18 to travel as follows:

192.168.0.17 -> NAT/Router/Switch -> 192.168.0.18

Putting the hub in place eliminates the switch in the diagram above, because it is a broadcast device, and all devices attached to it "see" all of the frames as they traverse it (assuming that the original hub is indeed a true hub, and not a switch - many times these days switches are called hubs, and a lot of people use the terms hub and switch interchangeably, but they aren't the same thing, except in the sense that both can be used to attach devices to the network ).

And the reason why it's optional and probably won't work is because if the new nat/router/switch was causing the PCs not to see one another, I'd expect that you wouldn't have Internet connectivity either.

Try that and post the results!

I bet it's ICS

Regards,

dj

 

try opeining a folder and in the top bar type //(name of other computer)/ and if anything comes up it should be fine, but something else is messed up. You could also try typing that in the run box. Tell me what it does.

 

Nope...

Tried to ping each one as suggested by djlowe,and got the "timeout error" on both.As far as ICS being the issue..I believe that is overridden when I set up each computer to connect to the internet via the hub or router in the network wizard...Otherwise,where would I turn that off?...Dunno....At a loss..

 

Re: Nope...

That's consistent with firewall behavior.

You can check and disable IFS and ICS are in the same location. Click on the advanced tab in your network properties dialog.

http://www.hku.hk/cc/faq/hallnet/image002.jpg

Your router might also be configured to block LAN traffic. Check the web admin portal of your router for any kind of setting like that.

 

In my router settings,the "Block client in LAN" is disabled,as is the "Filter packets from Lan".And the ICF box...Firewall is disabled and there is no option for ICS.

 

Says that it cannot find correct path.

 

Need to get a small piece of cable..I'll give that one a shot..keep ya posted
~Noc~

 

Hi,

Well, if disabling ICS and IFS doesn't help, and putting the 2 PCs onto the same hub doesn't either, here are a few other things to try.

Make sure that each PC only has one instance of TCP/IP running. You can check this by opening the properties of the Local Area Connection under Network and Dial-up Connections.

At a minimum, there should be 3 entries, and all 3 should be enabled:

Client for Microsoft Networks: This the network client, and is what provides the communication between a PC and a Microsoft network.

File and Printer Sharing for Microsoft Networks: This is a service that allows other PCs on a Microsoft network to access the resources on an individual PC.

Internet Protocol (TCP/IP): This is a network protocol that carries all of the information for the 2 above and Internet traffic as well.

Windows supports multi-homing, which is assigning multiple IP configurations to the same network interface. If you see more than one entry for TCP/IP, then multi-homing is enabled, and you'll want to check the properties of each instance of TCP/IP and determine which one(s) to disable. The only one that you need to have active is the one that has both "Obtain an IP address automatically" and "Obtain a DNS server address automatically". If there are others, you can temporarily disable them by unchecking them.

If you see other protocols listed, temporarily disable them as well, and do the same for any additional clients or services beyond the 2 listed above.

Once all of that is done, restart the PCs and test again. If that works, you can remove the items that you disabled.

Some thoughts about networking in general (while I'm thinking about it, feel free to ignore this if you don't want to be bored ).

A good general rule of networking is to only install and enable the bare minimum number of clients, services and protocols needed to permit a PC to connect to those network devices to which it should have access. Anything else is a waste of both PC and network resources, and adds unnecessary complexity to both.

There are, however, sometimes good reasons to add other things. If you wanted to play the original Doom or Doom II on your networked PCs, you'd have to add the IPX protocol to the PCs on the LAN, since they only support IPX networking out of the box (and whether or not that is a "good" reason to do so is what seperates the geeks from the non-geeks, I suppose ).

Well, I hope that helps! Post the results when you can, I'm really curious to see how this one ends!

Regards,

dj

 

Hmmm, do you have any software firewalls running, maybe the one in XP, not sure if that would block traffic after you use the wizard, but I wouldnt be surprised, that thing is one of the first things I disable when I set up my computer.

 

sounds like a firewall to me too...

 

OMFG......I found the culprit.....I thought I had disabled it on both machines,but must have missed it on a re-boot...Fuggin Zone-Alarm!!!.....Thank you all for the suggestions and help. 8)

 

Hi,

I'm glad to hear that you fixed it! Congratulations!

Regards,

dj

 

good job!