Re: absurdly simple LAN problem
From: Anthony Campbell (ac_at_acampbell.org.uk)
Date: 09/16/05
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Date: Fri, 16 Sep 2005 12:13:32 +0100 To: debian-user@lists.debian.org
On 16 Sep 2005, Clive Menzies wrote:
> On (15/09/05 17:10), Anthony Campbell wrote:
> > On 15 Sep 2005, Clive Menzies wrote:
> > > On (15/09/05 15:18), Anthony Campbell wrote:
> > > > I've struggled with this one for months! Much perusing of HOWTOs and
> > > > googling hasn't helped.
> > > >
> > > > I have two computers, desktop and laptop, and a wireless router and ADSL
> > > > modem. Both machines reach the internet without problems, one via a
> > > > cable link to the modem, the other via a wireless link to the router.
> > > >
> > > > However, they do not communicate with each other. I cannot ping from one
> > > > to the other though I can ping localhost on each. Turning off the
> > > > firewall (shorewall) does not help.
> > > Unless I'm being really dense, I'm not surprised they don't communicate;
> > >
> > > Can you elaborate on exactly how they are connected?
> > >
> > > PC ---------> ADSL modem -----> internet
> > >
> > > Laptop ------->Router------> ?
> > >
> >
> > > My point being how would they communicate?
> > >
> > > I suspect what you need is:
> > >
> > > PC -----------> Router------>ADSL modem
> > > ^
> > > |
> > > Laptop ---------|
> > >
> > > I accept that I may have totally misunderstood ;) Is the ADSL modem
> > > also a router? In which case it may be in it's configuration.
> > >
> > >
> >
> > It's a Netgear MR814 router. The ethernet cable from the PC goes to a
> > local port on the router and the internet port on the router goes to the
> > modem. The laptop communicates with the router by wireless. That seems
> > to be your second scenario.
>
> OK. It sounds as though this is a router configuration issue.
>
> If you are using the router's DHCP service for both machines, that
> should work or have you set them manually?
>
> Regards
>
> Clive
>
Under LAN IP setting, the entry for "Use Router as DHCP server" is
ticked. The help file says:
Use Router As DHCP Server
The MR814v2 router is set up by default as a DHCP (Dynamic Host
Configuration Protocol) server, which provides the TCP/IP configuration
for the all the computers that are connected to the router.
Unless told to change these settings by your ISP, leave the Use Router
As DHCP Server check box checked.
If your ISP has you clear this check box, you must have another DHCP
server within your network or else you must manually configure the
computer.
* Starting IP Address: This box specifies the first of the
* contiguous addresses in the IP address pool. 192.168.0.2 is the
* default start address. Ending IP Address: This box specifies the
* last of the contiguous addresses in the IP address pool.
* 192.168.0.51 is the default ending address.
Anthony
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