DHCP server

[Guest]

There is a desktop and my laptop which are connected to this DSL modem for
Internet access. The desktop works fine, and my laptop too...until one day
the laptop couldn't connect. A message at the bottom right said that there is
limited or no connection, etc. When I go to Command Prompt and type in
ipconfig/renew, it says that the DHCP server cannot be contacted. Two days
ago the laptop was back online, though, and now it's back to the same
problem. I think it has something to do with this DHCP server because
everything else seems to be fine...
Also it might be of use to say that whenever my computer goes on standby and
I resume it, it displays that "limited or no connection message." Perhaps
that's tied to the problem...

 

[Guest]

I think I figured out the problem with my networking, however I need help to
fix it. I went on the PC and tried to ping the laptop (open and connected and
everything), but the ping failed. The laptop, however, can ping the PC. I'm
not sure where I go from here...

 

[Man Cheng]

Hello,
I found the Windows XP-SP2, shows the network connection to "limited/no
connection" while the computer directly connected yo ISP.

By default, Windows XP network IP obtained from DHCP server, in your case,
the "ipconfig/renews" will not obtain IP from DHCP server, because there is
no DHCP server exist, you can bind any IP address, such as 192.168.0.1, to
your ethernet adapter.

After then, connect to your ISP. Good luck.

Man Cheng

 

[Guest]

I don't get how a DHCP server doesn't exist...and how do I bind an IP to my
adapter?
I re-did the network between the two computers, and once again my laptop is
fine...that's what happened three or four days ago or so, but I'm afraid the
problem will come back again...
Thanks

 

[Ron Martell]

I don't get how a DHCP server doesn't exist...and how do I bind an IP to my
adapter?
I re-did the network between the two computers, and once again my laptop is
fine...that's what happened three or four days ago or so, but I'm afraid the
problem will come back again...
Thanks

Do both your computers connect directly to the DSL modem? That would
be unusual, as most of these modems have only a single connector port.

Are you using a cable/dsl router between your PCs and the modem?

What are the i.p. addresses that are being assigned to the laptop and
to the PC?

Ron Martell Duncan B.C. Canada
--
Microsoft MVP
On-Line Help Computer Service
http://onlinehelp.bc.ca

In memory of a dear friend Alex Nichol MVP
http://aumha.org/alex.htm

 

[Guest]

Both the PC and the laptop connect to the DSL device via ethernet cables (it
has four ports). The IPs for the computers begin with 192.168.x and the last
two numbers are one place value away from each other.

 

[Ron Martell]

Both the PC and the laptop connect to the DSL device via ethernet cables (it
has four ports). The IPs for the computers begin with 192.168.x and the last
two numbers are one place value away from each other.

Okay. That indicates that your cable/dsl modem has a router
incorporated into it, and that the modem/router is configured as a
DHCP server. Therefore any DHCP server related problems are due to a
malfunction/misconfiguration in the modem/router.

Check the manufacturer's web site for any updates in software or
firmware for your specific model, and download & install these.

Also check the documentation for the modem/router for instructions on
how to reset all of the configuration settings to factory defaults.
Most of these items have a reset button on the back of the unit,
adjacent to the power and/or the network connectors. Sometimes a
brief press of the reset button does a "soft" reset (basically just a
power off and power on) and it takes a sustained "press and hold" of
the reset button in order to do a hard reset back to the factory
default configuration. Check your documentation carefully and make
certain you know exactly what needs to be done in order to reconfigure
the modem for your use (often there is nothing that really needs to be
done in this regard) before you do the reset.

Good luck

Ron Martell Duncan B.C. Canada
--
Microsoft MVP
On-Line Help Computer Service
http://onlinehelp.bc.ca

In memory of a dear friend Alex Nichol MVP
http://aumha.org/alex.htm

 

[Guest]

I see now. That explains what my problem is... Thank you, Ron Martell, and
Man Cheng, for all your help! It's very much appreciated.