Connectivity problem

[fs1]

Hi,

I'm not a switch expert by any means and am encountering an issue I thought I'd throw this way. I have a switch that three users use plugged into a cable modem to get internet access. Right now, only two of the three will be able to get on the internet at a time - the first two to boot up get on the internet and the last one doesn't. It doesn't matter which computers boot first, it's just whatever one is last to boot doesn't get on the internet.

I have rebooted both the modem and switch, all computers, but still, only two computers can get out to the internet.

I have done IPCONFIG /Release on all PCs, but still, only the first two to boot up get on the internet. I have statically assigned one PC's IP, but this did not fix issue. Does anyone have any idea how I need to proceed to fix this?

Thanks in advance for any help.

 

[BadFrog]

Is this someting that was working then stopped? If so can you provide any details around the time it stopped? Can you ping one of the other PC's when you can't access the internet? What make/model switch?

"Once you can accept the universe as matter expanding into nothing that is something, wearing stripes with plaid comes easy"
Albert Einstein

 

[linney]

See if there are any clues in these semi-similar threads?


How to troubleshoot network connectivity problems

http://support.microsoft.com/default.aspx?scid=kb;en-us;325487&FR=1&PA=1&SD=HSCH

Home Networking
thread779-262625

Permissions error? but not!?!?
thread779-957761

XP cannot access other computers whenever the internet is connected
thread779-989191

Router won't let me connect to internet
thread779-1057496

 

[Frank4d]

If only two of the three can access the Internet and it doesn't matter which two of three (I assume you have tried barious combinations)... my guess is that the DHCP server on the router is set to limit the number of IP addresses it will allow. Check your router DHCP pool size and see if it is limited to two addresses.

 

[allteltec]

You say a switch ? If you are not useing a router and just a switch your Cable ISP is only giveing you 2 IP's you can contect them and pay for anouther IP or get a router.