Network connection issues

[kaylans]

Our network was working fine for several months, but now we're having
an issue. Two of the three computers I've tried work fine if you plug
them straight into the ADSL modem, no issues at all. The minute you
plug them into the router, though, the internet stops working. If you
plug the modem straight into the router, none of the computers can
recognise that it's there, they can't connect. I'm using a D-Link
DSL-302G modem, and a D-Link DI-707P 7-port switch router.

This happened when I was away several weekends ago, and ever since it
hasn't been working. The only computer that was on it that weekend is
the one that now can't even directly connect to the modem, but that one
isn't plugged into the network while the others are trying to connect
and failing. The computers can talk to each other via the network, they
just can't talk to the modem - I can't connect one computer via the
modem and then use the router to connect the rest of the computers up,
nor can I connect the modem directly to the router and connect all the
computers through the network.

Can anyone offer any insight?

Cheers,
Kate

 

[Rick \Nutcase\ Rogers]

Hi,

Well, if the connection works when you plug the computer directly into the
modem, then doesn't when you add the router, then therein lies the problem.
Make sure to power everything down, then bring them up in this order: modem,
router, and then the pc - waiting for each to fully power up and get
connected. Once up, try logging into the router from the pc. If it fails,
then either the router is bad or your network settings are wrong. Can you
ping the router?

As to the one machine that cannot connect directly through, try the steps
here, but it may be that the network card or its driver is bad:

How to troubleshoot TCP/IP connectivity with Windows XP
http://support.microsoft.com/?kbid=314067

--
Best of Luck,

Rick Rogers, aka "Nutcase" - Microsoft MVP

Windows help - www.rickrogers.org

 

[Guest]

Hi,

Have you tried to initialize the router, i. e. somehow get it to the state
it was in at delivery?

Are you able to access the router from any attached PC?

If so another suggestion might be to reinstall the latest firmware for the
router after having downloaded it somehow from the manufacturer.

Be systematic when trying to restore the network. Just attach one computer
at a time to it.

Has someone deactivated DHCP on the router?

Good luck!

 

[Lem]

Our network was working fine for several months, but now we're having
an issue. Two of the three computers I've tried work fine if you plug
them straight into the ADSL modem, no issues at all. The minute you
plug them into the router, though, the internet stops working. If you
plug the modem straight into the router, none of the computers can
recognise that it's there, they can't connect. I'm using a D-Link
DSL-302G modem, and a D-Link DI-707P 7-port switch router.

This happened when I was away several weekends ago, and ever since it
hasn't been working. The only computer that was on it that weekend is
the one that now can't even directly connect to the modem, but that one
isn't plugged into the network while the others are trying to connect
and failing. The computers can talk to each other via the network, they
just can't talk to the modem - I can't connect one computer via the
modem and then use the router to connect the rest of the computers up,
nor can I connect the modem directly to the router and connect all the
computers through the network.

Can anyone offer any insight?

Cheers,
Kate

Do you have any reason to think that there might have been a thuderstorm or
other electrical problem during the time you were away?

Something very much like what you describe happened to me as a result of a
nearby lightning strike. Both my DSL modem AND the PPPoE interface in my
router (but not the router itself or any regular phones) were rendered
inoperable by the power surge through the phone line.

Check in your router's configuration "status" page and see if it is
connected (or can connect) to your DSL service. And I would guess that the
one "bad" computer can't talk to the others over the network, suggesting
that its NIC is gone.

 

[Plato]

Our network was working fine for several months, but now we're having
an issue. Two of the three computers I've tried work fine if you plug

Networking - General

http://www.howstuffworks.com/home-network.htm
http://www.homenethelp.com/home-network.asp
http://www.wown.com/j_helmig/dccmain.htm
http://www.practicallynetworked.com/sharing/
http://www.annoyances.org/exec/show/category04

Networking - NT/XP Specific

http://www.microsoft.com/windowsxp/homenetworking/
http://compnetworking.about.com/cs/winxpnetworking/
http://support.microsoft.com/?kbid=813936
http://www.onecomputerguy.com/networking/xp_network.htm
http://www.microsoft.com/windowsxp/using/networking/getstarted/default.mspx