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Linksys WRT45G Router passing out IPs in wrong network.

Just wondering if others have seen this before. Background: My router, about 2 months ago, just completely reset itself...lost all settings. That was my first indication that something might be wrong. I am pretty savvy in networking (I teach it), but just wondering about this particular issue.
It started this evening with Xbox. Couldn't get on the net. My husband showed me the settings and it had a 192.168.123.x IP address with no default gateway. Linky gives out addresses in the 192.168.1.x network. I thought he might have accidentally connected to another network in the neighborhood, but no. Figured it was something up with Xbox, and just manually entereed IP in the network and all was right with the world.
Then as I'm about to complete an order on a website a little message pops up that I am now connected to my network. Odd. I was connected to it. No biggie. I try to submit my order and it won't go through because I'm not connected to the networ. I check my IP, 192.168.123.x. WFT? I have a broadband modem so I connect that, complete my work and then mess with the computer. I disable the wireless completely, clear all settings (IPconfig /release /renew only gave me a 123 address again, but the network name was my network).
I get it to reconnect and check the dhcp table and see that only a few of our computers are connected. (I did a power cycle of the router in the meantime.) Note that this wasn't only wireless...the xbox is wired attached.
A few minutes later my husband's computer has the same problem. Linky has given it a bad address.
My suspicion is that the router is going to live with Jesus soon, but just curious if others have seen this behavior.

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Whow - that is weird! I honestly never heard of anything like that. Even if you have a power outage or anything like that, the settings are stored in nvram and are non-volatile.
Did the subnet mask change from a /24 to a /16 maybe?
Maybe the firmware is faulty?

The advise/suggestion I would give to you, is to try a different firmware. I am a big fan of tomato - switched about 18 months ago and had never (and I mean never) any problems. The only time I had to take my router off power was when I moved houses. One of the main reasons for choosing tomato over any other of the open source firmwares (like dd-wrt, open wrt, etc.) was the fact that you can easily return to linksys firmware if you don't like it. I was also afraid I would damage my router with some of the "fancier" stuff. Now, after more than one year, I am really happy with it and would never think of returning to the stock firmware. It runs extremely stable, gives me the option to monitor my bandwidth usage, QoS finally works (compare to linksys), I can assign static IP addresses on the internal LAN, and I am able to use my routers as Ethernet bridges.
But take a look here (some screenshots are here) and decide for yourself (Make sure your router is supported!)

I would be very interested to see the result of this thread. Let me know what you think!


Posted on Jul 25, 2009

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Did your router happen to come with Network Magic? I have had similar issues with my networking as well and it seems to be that particular program for security that causes a great deal of issues. I had uninstalled the program and reinstalled and hasnt been the same since. However, I just manually set my router settings with each mask set for each computer and havent had any problems.

Posted on Jul 26, 2009


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