- problem thru Linksys router
- Posted by gurdude on May 25th, 2004
I have 2 computers running XP Home (a desktop and a laptop), each connected
to a Linksys WRT54G broadband router (it's a wireless router, but I'm not
even using that aspect of the product), which is in turn connected my
Motorola SB4200 Surfboard cable modem. The whole set-up worked fine the
past 5 days, but since then ONE of the computers (the laptop) has lost all
connectivity to the Net. The desktop connection has remained fine.
I have isolated the problem to be with the Linksys router. If I bypass it
altogether and connect an Ethernet cable from the cable modem to the laptop,
I connect to the Net fine. However, when I insert the router between the
two, I lose all Internet connectivity on the laptop. Interestingly, the
desktop works fine, so I know the router works. I even tried using the 4
different ports on the router to make sure that one of them wasn't
defective.
Can anyone give me some things to check and/or try? I have listed as much
relevant info below. Thanks!
(from Linksys router screen, DHCP setup screen)
DHCP Server is enabled; desktop is the only client listed in the DHCP
Clients Table (the address for the desktop computer is listed as
192.168.1.101)
The laptop is a recently purchased new computer (set up on 5/20, worked
until 5/24). When I type ipconfig at the command prompt, I get the
following:
IP Address: 10.0.0.9 (! this definitely seems wrong !)
Subnet Mask: 255.255.0.0
Default Gateway: (blank) (! the desktop, which works fine, displays
192.168.1.1 here)
From the laptop, I can successfully ping 10.0.0.9 and 127.0.0.1, but NOT
192.168.1.101 (the desktop computer) nor 192.168.1.1.
From the desktop, I cannot ping 10.0.0.9 (supposedly the laptop computer).
- Posted by Bob Willard on May 26th, 2004
gurdude wrote:
I don't really suspect the LAN cable, but since it is so easy to check,
I suggest swapping LAN cables with your desktop just to eliminate that.
Your IPA is wrong. Try setting the IPA manually to 192.168.1.102 and the
mask to 255.255.255.0. If that makes everything work, then try setting
the laptop to be a DHCP client, then reboot.
--
Cheers, Bob
- Posted by gurdude on May 27th, 2004
My LAN cable is fine, and changing the IPA to 192.168.1.102 and the mask to
255.255.255.0 did not change anything. Even rebooting everything didn't
change the DHCP Clients Table on the router setup pages so that it displayed
the laptop (only the desktop is listed).
I'm still puzzled as to why everything worked for ~5 days, then went kaput!
"Bob Willard" <BobwBSGS@TrashThis.comcast.net> wrote in message
news:0h%sc.117880$xw3.7015986@attbi_s04...
- Posted by gurdude on May 27th, 2004
As I was copying & pasting the various displays from typing ipconfig/all at
the command prompt, I did a number of shutdowns and reboots of everything
(cable modem, both computers, and router). For WHATEVER reason, after one
such reboot, everything worked as it should. The network settings on the
laptop are identical as they were last night when the problem was there, but
now everything is fine, the ipconfig command yields meaningful info, the
laptop appears in the DHCP Clients Table, and I'm back to normal.
What caused this whole thing eludes me, and I fear that it may happen again,
and I won't know how to fix it (other than dumb luck).
