Router Problem

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Router Problem

Postby Arnobius » Wed May 25, 2005 5:20 pm

Does anyone know how to change the default address of a Netgear wgt624 router? It happens to have the same default address as my DSL modem, so they conflict and don't work together. Netgear's website was pretty useless for advice.
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Postby Kaligraphic » Thu May 26, 2005 12:06 am

Eh, your modem has an IP address? That's a bit unusual.

Are you plugging the modem into the router? If so, the router should be getting an IP address from your ISP as if it was your computer. Your router will use a default IP address only for the "inside" of your network, but none of the "inside" IP addresses would even be visible from the outside - and the modem would be the link to the outside.

Perhaps you need to confirm that you're plugging the modem into the WAN port and not one of the LAN ports.

(I've been using the same model of router here, so I'm familiar with how to configure it.)
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Postby Arnobius » Thu May 26, 2005 7:33 am

Kaligraphic wrote:Eh, your modem has an IP address? That's a bit unusual.

Are you plugging the modem into the router? If so, the router should be getting an IP address from your ISP as if it was your computer. Your router will use a default IP address only for the "inside" of your network, but none of the "inside" IP addresses would even be visible from the outside - and the modem would be the link to the outside.

Perhaps you need to confirm that you're plugging the modem into the WAN port and not one of the LAN ports.

(I've been using the same model of router here, so I'm familiar with how to configure it.)

Yeah. it has the typical 192.... address that is used to access the modem itself. The netgear router/firewall has the same address for accessing it. So they conflict.

Netgear's instructions don't work. Neither do their suggestions on how to configure it to the DSL modem. I guess it has a known issue working with the SBC Yahoo modem.
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Postby Kaligraphic » Thu May 26, 2005 9:00 am

So you use 192.168.0.1 to configure your modem, and the problem is you can't get to that?

(pretty odd for a modem...)

You can change the LAN IP range and router address from the router's web interface - on the left frame, click on "LAN IP Setup" and you can change the router's IP address (don't forget it, but use something easy to remember - say 192.168.1.1) and change the starting and ending IP addresses for DHCP to 192.168.1.2 and 192.168.1.whatever.
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Postby Arnobius » Thu May 26, 2005 10:10 am

Kaligraphic wrote:So you use 192.168.0.1 to configure your modem, and the problem is you can't get to that?

(pretty odd for a modem...)

You can change the LAN IP range and router address from the router's web interface - on the left frame, click on "LAN IP Setup" and you can change the router's IP address (don't forget it, but use something easy to remember - say 192.168.1.1) and change the starting and ending IP addresses for DHCP to 192.168.1.2 and 192.168.1.whatever.

I'll try that when I get home from work
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Postby Kaligraphic » Thu May 26, 2005 11:18 am

Why do you need to reach your modem by IP address, anyway? What do you need to keep reconfiguring on it?
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Postby Arnobius » Thu May 26, 2005 12:43 pm

Kaligraphic wrote:Why do you need to reach your modem by IP address, anyway? What do you need to keep reconfiguring on it?

It's PPPoE. Since both the router and the modem have the same address, you can't get to the internet while the router is plugged in, since the two devices conflict.
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Postby Cap'n Nick » Thu May 26, 2005 1:23 pm

I had a similar problem when I first set up my home network, and it looks like you might be having much the same difficulty. Possibly. I wasn't very technical then and I'm not very technical now, but I did find out how to fix things.

What was happening in my case is that both the router and the modem were trying to assign addresses on the network, screwing each other up. I hooked the modem directly to the computer so I could access its interface and set it to pass-through mode so it would stop acting like a router and let my *real* router do its job. It took me a long time to figure this out because the modem was advertised and sold to me as a modem without any indication that it was also capable of assigning network addresses.

Again I'm not sure if this is your problem, but the symptoms sound the same. In addition, I also have PPPoE DSL internet and the same brand of router, so perhaps reconfiguring the modem is worth a shot.
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Postby Kaligraphic » Thu May 26, 2005 8:22 pm

Okay, for PPPoE, you'll want a somewhat different solution.

The way PPPoE works is it's basically exactly what it sounds like - Point-to-Point Protocol over Ethernet. Essentially, it only allows for two addresses: "Me" and "The other end". Your modem is basically irrelevent to the connection, because everything the modem does is done in reverse by the DSLAM at the other end. (like driving through a tunnel - if that changes your car in any way other than using up gas, I'm not riding with you.) Of course, if your modem also has another router built in, then you've got a problem with the router in the modem, not the modem itself.

Basically, the use of PPPoE means that you need to login at the other end. You can configure a Netgear wgt624 router to use PPPoE like this:

Connect your modem to the WAN port of the router.
Log into the router's administrative interface.
Go to Basic Settings, and where it asks you if your ISP requires a login, click yes.
Make sure your provider is set to "Other" (this is generic PPPoE)
Put your login and password in the appropriate boxes. Your login will typically require the domain, so it's probably the same as your ISP-assigned email address.

Confirm that these things are in correctly, and click apply.
Then open another browser tab/window, and see if you can reach google.
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