Canadian Broadband → Connecting DMT through a router to a Speedtouch 516 modem

Has anyone figured out how to get DMT to connect to the speedtouch 516 modem through a router?

I know there is a post on doing this with a speedtouch 546 but it doesn't apply to the 516.

I have my WINXP machine (192.168.1.100 assigned from my dlink di624 router) ---> DI-624 (192.168.1.1) ---> Speedtouch 516

when i ping 192.168.1.254 i get no response.

I am afraid you might not be able to do it at all.

Assuming you have the modem set in Bridged mode, the router is tunneling right thru it. In that case, the modem's webpages are not accessible, no DMT either.

It *might* be possible to set something up, but then you would need to use the modem in Routed mode.

- modem setup in Routed mode.

- cable connecting the modem's ethernet port to one of the router's LAN ports (NOT the WAN port).

- Let the modem do the DHCP job, disable it on the router.

The thing is, on this setup the router is simply a ethernet switch, a place to connect multiple machines to.

That isn't so bad because the 516 still has a firewall in it that can be used instead of the router. But, will my wireless work in this setup?

Yes, the modem routing and firewall are still there to protect you (make sure Firewall is enabled on the modem's webpages).

The wireless should work fine, as long as you set the router properly.

- disable the router's DHCP.

- set the router's LAN addresses to match the modem's one (default is 192.168.1 network).

- enable the modem's DHCP (on the Interfaces tab of the webpages).

The router should pass any wireless traffic it receives to the modem, as it becomes the network's gateway.

I Finally found the answer to this.

IF you have the 516 and want to access it using DMT through a router do this: (this is for a dlink di-624 router)

1) Connect the 516 to your machine and run the setup wizard. Set the 516 to Routed mode - PPPoE and fill in your login details and anything else that it asks.

2) Disconnect the 516 from your machine and connect it to the WAN port on the router. Now connect your dlink router to your pc (or connect over wireless) and login to the web interface.

3) In the dlink, under HOME-->WAN set it to Dynamic IP, save

4) Under HOME-->LAN change the IP to a different subnet from your 516. My ST516 is on 192.168.1.254 by default so i changed my LAN on the dlink to be 192.168.10.1 , save

5) Renew your IP on the pc since it will be on the 192.168.10.x subnet now.

6) Now you should be able to connect to the ST516 with dmt.

The only bugs with doing routed PPPoE with the 516 are:
no DMZ, the 516 won't do it for whatever reason
you have to port forward on both the 516 and the router (so it's mandatory to put a fixed IP on the router WAN for port forwarding).
but it's nice to access the 516 behind a router

I just bought the 516 in the 2nd group buy organized by TilhasBB, but have not had the time to set it up. Has anyone got a bug fix from Thompson? If not, can I get my money back?

Just a note to anyone who has a router that you can run 3rd party firmware one (openwrt, tomato, dd-wrt, etc) you can set the ip of the wan port to be on the subnet that the modem expects and configure the firewall to allow access to the web/telnet interface of the modem. »www.dd-wrt.com/wiki/inde ··· guration has instructions that you can apply to any of the firmwares.

It doesn't help now, but openwrt is working on adding support for the di-624.

Thanks for that link, rex0.

I just finished connecting my SpeedTouch 516v6 modem to my WRT54GL router, which I flashed with Tomato 1.04.

Using the two commands on that page let me use DMT (or the web GUI) to check out my modem settings through the router. I didn't think it would be that easy!

-eareye

I'm a little confused as to how all of this works, I've got a WRT54GS running DD-WRT and the Speedtouch 516. I tried the instructions on that page but it doesn't seem to work... I've substituted the 10.0.0.0 ips for 192.168.1.254, without any success.

Would it be possible for you to put step by step instructions on what I should be doing? I'd be most grateful, thank you!

Did you try using the 10.0.0.0 IPs? That's what I used. (I was actually under the impression that the 192.168.1.254 IP address was only available in routed mode but maybe I'm mistaken.)

Anyways, in my case I simply used the configuration wizard to put the modem into bridged mode. I then connected the modem to the WAN port on my router and connected the router to my computer (wirelessly).

I TELNETted into the router and entered the following commands:


I was then able to connect to my modem using the 10.0.0.138 address!

-eareye

How do I change it to the 10.0.0.0 IP range on the modem?

I'm interpreting what you said as you wanting to know how to have the modem have a 10.* series ip address...

So...:
- you don't (need to change it); it should already be setup
- but to do it, go to the www page of your modem and then:
    HomeNetwork/Interfaces/LocalNetwork/Configure

Of note::
AIUI the 516 modem comes *pre-configured* to have 2 ip addresses: 10.0.0.138 and 192.168.1.254

HTH

Thanks for the advice eareye and BellVictim!

I was under the impression that I had to change the IPs on the modem's side. I have it set as indicated and I am now able to get to my stats and connect to the router's configuration page by connecting to 10.0.0.138, while behind the router!

anyone do this on tamato (wrt54g?)

I still can understand the jibberish above...if anyone can simple state it in lamen terms please doo! thanks

Exactly what part are you having trouble with?

Putting your modem in bridged mode?

Connecting your PC and modem to your router?

Using TELNET?

-eareye

I think its going to be easier if I just hook it up directly...I dont want to mess with my routers network settings and I certainly dont want to forward ports 2 times :P

You only have to forward ports twice if the modem connected to the router's WAN port is in routed mode. In this case, it's in bridged mode, so it just acts like a dumb device and passes all traffic through to your router.

By "hook it up directly", do you mean you're going to forego the router altogether? That seems like a waste, especially considering you were going to use Tomato, which I'm liking very much, by the way. (The 516 looks like a more than adequate modem/router solution, though.)

The only configurations that would involve your router would be:

a) modem in bridged mode connected to router's WAN port

Easiest to set up and mosty efficient in my opinion, though you'll need a Linux-based router to be able to add a route to the modem's 10.0.0.138 address if you wish to use DMT or the modem's web interface.

b) modem in routed mode connected to router's WAN port

Here's where you'll have to port-forward twice, which seems like way too much work. I didn't even consider it because that's just how lazy I am.

c) modem in routed mode connected to router's LAN port

Easy enough to set up but then why have the router at all unless you have multiple computers or require wireless access.

Anyways, I hope whatever you decide on works for you. I'm just a bit surprised at your reluctance since it's ridiculously simple and straightforward. (I'm sure it took me less than an hour to configure the modem, install Tomato on my router, set up my wireless connection and start accessing my modem!

-eareye

Is there a way to do this with a wrt54gl router without having to flash it? I'm not sure which firmware to go for...

I'm pretty sure there isn't a way to do this with the stock firmware on the WRT54GL. (It doesn't have a TELNET interface, does it?) I never tried it on mine because I knew I wanted one of the third party ones (for the QoS).

I would suggest trying out Tomato »www.polarcloud.com/tomato as, from most reports, it seems like the easiest, leanest and most stable of the custom firmwares. I think it's also pretty easy to switch back to the Linksys firmware from Tomato in case you don't like it.

I've only been using it for a short while, but I really like it a lot and being able to tunnel through to my modem is a nice bonus!

-eareye

Not sure about the 516 itself. I haven't plugged mine in yet.

However, with my older 3com Home Connect, I am able to do the following:

[host] [router-lan] [router-wan] [modem]
+ + + +
[+++++++++++++++++++++switch+++++++++++++++++++]

while router-wan talks to modem, host can also telnet to modem.

The modem is nothing more than a glorified bridge that forwards ethernet frames destined for a known ethernet destination.

But it also has its own IP stack. So when it gets an ethernet frame destined to its own ethernet address and it contains an IP packet, it will process it locally.

AKA, when you telnet to the modem, you are sending unicast packets directly to the modem. When the router talks to the remote BAS, it send ethernet frames addressed to the BAS's ethernet address, which the modem simply forwards because it knows that that ethernet address lives on the other side of the link.

So, make sure your modem is configured to be in the same subnet as your lan. You should then be able to telnet or even http to it by using its lan IP address, while the modem continues to forward ethernet frames destined to the BAS/DSLAM.

If you have a smart switch, you can also setup separate VLANs, as well as getting the ethernet address of the BAS machine at the other end of the DSL infrastructure.

Sorry I need some help...
My modem is already in bridge mode so I upgraded the firmware to Tomato as eareye suggested. Then I accessed the router's configuration and went into Administration - Scripts. Entered the code "ifconfig vlan1 10.0.0.1 netmask 255.255.255.0 broadcast 10.0.0.255" in the Init box and "/usr/sbin/iptables -I POSTROUTING -t nat -o vlan1 -d 10.0.0.0/24 -j MASQUERADE" in the Firewall box. Now I tried to access the modem with »10.0.0.138 but it still doesn't work...
Did I do everything correctly?

I tried it on mine just now and the first command (in the Init box) requires a "sleep 5" command to come before it.

(I had been entering the commands through TELNET up until now but this is nice having them in the startup scripts! =)

-eareye

Thanks eareye, it works now!
Out of curiosity, how do you do this using telnet? I didn't know how to use it so I looked around and found the way with the scripts. Is there a difference between the 2 methods?

In order to use the TELNET interface, you'd have to make sure that the TELNET Daemon is enabled on the Administration / Admin Access page.

Use the Windows command prompt to "telnet 192.168.1.1" and log in as "root" using your password ("admin" by default, I think). Then just enter the commands (or any other Linux commands).

The difference is that the configuration changes implemented by typing the commands in a TELNET session aren't persistent so a reset will return the router to it's previous configuration.

Having these commands in the startup scripts means that they will be run each time the router is reset so your modem will always remain accessible.

Note: You could always edit the startup scripts using TELNET but doing it through Tomato's web interface makes it much easier.

-eareye

Ok I understand now. Thanks a lot for your help eareye

Working with Milkster's steps, here's how I got my 516 set up with my Linksys BEFW11S4 wireless 802.11b;

1) Connect the 516 to your machine and run the setup wizard. Set the 516 to Routed mode - PPPoE and fill in your login details and anything else that it asks.

2) Disconnect the 516 from your machine and connect it to the WAN port on the router. Now connect the router to your pc (or connect over wireless) and login to the web interface of the router.

3) In the main set up screen, change LAN IP to something OUTSIDE of the modem subnet (ie. 192.168.10.1) and set WAN connection type to "Obtain IP automatically", save

4) Renew your IP on the pc since it will be on the 192.168.10.x subnet now.

5) Now you should be able to connect to the ST516 with dmt.

NOTES: I kept DHCP enabled on router

If you have your modem firewall enabled, and you have some games/applications passing thru (Games/Apps sharing, in the modem administration screens), you'll need to reroute them to the ROUTER device as well as within Router config screens, forward those ports appropriately.

Hope this helps!

Would the solution above work for wireless connections as well?

sorry for my ignorance guys but how do I telnet into my router so that I can input those codes in order to access my modem? I apologize once again. I'm not familiar with broadband formats and i'm relatively new to these types of ways to access modem/router.

can someone explain what your doing?

By changing the LAN port to have an IP OUTside the subnet mask and set the wan to obtain ip automatically
The wan should look at the modem (routed) and modem will give it 192.168.1.100
How are you on the LAN able to access that ip if your gateway is not 192.168.1.x (modem range)