router trouble

[Zacariaz]

It would seem that the cable that came with the router didn't work, so for now don't try too hard to help. I'm sure my buddy will get it to work soon.

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First of all, hello to all you lovely people. I know that I rarely visit and that when I do, it's usually because I want you to solve my problems for me, but this is still my favourite forum.

Anyway, on to the problem.

A buddy of mine have got an issue with his ISP which is that the router they've provided will only provide one IP or just one computer to be connected to the internet and as multiple computers have to have access, this is of course a problem. Change of ISP is not an option, nor is changing the router settings or replacing the router. So, when I heard about this problem, the solution seemed obvious to me. Buy some standard router, connect it as sort of a managed switch and boom, you're online again. However, we've just tried just that and we're unable to get it to work.

Just to be sure everyone get the picture:

Code: Select all

'___     ______     ___________     ________
/   \   /      \   /           \   /        \
|LAN|---|ROUTER|---|ROUTER(ISP)|---|INTERNET|
\___/   \______/   \___________/   \________/

We've had no trouble getting the router we've bought to work on the LAN side, however, we're at a standstill when connection the two routers.

The router we've bought is a standard trendnet tw100-4, which AFAIK should do fine.

Now, I know that there's lot of guides/tutorials which describes in details how to do this, but guess what, I've been unable to find even a bad one. I guess the problem is that I don't know what this sort of setup is called.


Well, thanks in advance. You guys have always been there when help was most needed and I'm sure you'll be again.


Best regards.

[Owen]

Are you sure the ISP has given you a router? Sounds a lot more like a modem...

[Zacariaz]

could very well be. I'm just so used to call it a router that I didn't think about it. Regardless, we have only one IP, dynamic, to work with and no configuration options I'm aware of, but then again, you wouldn't have options if it were a modem would you?

In any case, I assume the router is still the way to go...

[Brynet-Inc]

You have 1 public IP, so.. the obvious solution is kind of obvious.

[gravaera]

Hi:

Assuming you have a router:

1. Can the PCs on the LAN side, if connected via a switch/WLAN, communicate normally using static IPs?
2. If so: When you connect the LAN PCs to the router, can you get to the router's HTTP interface? (Having the LAN PCs configured to take DHCP from the router)
3. If yes: Can you fetch pages from the web?
4. If yes: What's the problem?

--All the best,
gravaera

[Zacariaz]

Hi:

Assuming you have a router:

1. Can the PCs on the LAN side, if connected via a switch/WLAN, communicate normally using static IPs?
2. If so: When you connect the LAN PCs to the router, can you get to the router's HTTP interface? (Having the LAN PCs configured to take DHCP from the router)
3. If yes: Can you fetch pages from the web?
4. If yes: What's the problem?

--All the best,
gravaera

1. There's both a switch and a wireless router on the network and everything works fine wireless, also with multiple computers, assuming that no other computer or device is trying to connect. (all this of course before the introduction of the newly purchased router) and if the wireless router is disconnected, you can also connect directly or via the switch. This all makes sense I think, though I may not have explained it in the best manor.

2. I'm not sure exactly what you mean, but as I sain, the router works fine on the LAN side. IPs are assigned via dhcp, the router settings can be accessed and I assume communication between inside the LAN is working quite well.

3. Only when the router is disconnected and one single computer or the wireless router is connected directly.

4. Can't access the web. The connection between our router and the ISP router/moden is just not happening.

[Zacariaz]

It would seem that the cable that came with the router didn't work, so for now don't try too hard to help. I'm sure my buddy will get it to work soon.

[gravaera]

Hi:

2. I'm not sure exactly what you mean, but as I sain, the router works fine on the LAN side. IPs are assigned via dhcp, the router settings can be accessed and I assume communication between inside the LAN is working quite well.

If the local network is working well, then the problem would be with the router.

3. Only when the router is disconnected and one single computer or the wireless router is connected directly.

This seems to be modem, much like Owen said above. Configure the second router (the one between your modem and the LAN) to do NAT between the LAN and the modem. This way the second router will receive the IP address, and multiplex access for the other PCs. You should find the option to configure NAT in your router's WAN interface settings.

--All the best
gravaera

[Zacariaz]

Hi:

2. I'm not sure exactly what you mean, but as I sain, the router works fine on the LAN side. IPs are assigned via dhcp, the router settings can be accessed and I assume communication between inside the LAN is working quite well.

If the local network is working well, then the problem would be with the router.

3. Only when the router is disconnected and one single computer or the wireless router is connected directly.

This seems to be modem, much like Owen said above. Configure the second router (the one between your modem and the LAN) to do NAT between the LAN and the modem. This way the second router will receive the IP address, and multiplex access for the other PCs. You should find the option to configure NAT in your router's WAN interface settings.

--All the best
gravaera

NAT! Exactly what I needed to hear. Thought it was something completely different.

Thanks a bunch. I'll be sure to write a note when I know if it works or not.