TilhasBB
Formally Goden99
Premium
join:2000-08-05
canada
1 edit | reply to nigrunze
Re: Weird Tomato DHCP Issue
GOOD CALL!!!!
I completely forgot about the Speedtouch.
I removed the DHCP on the Speedtouch modem but now Tomato isn't able to dial in with it.
and I am unable to access the modem... any ideas? |
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paulwye
join:2007-02-17
Toronto, ON
 ·TekSavvy Solutions..
| Okay, that's just weird. I'm fairly sure that the router doesn't need DHCP to be active on the modem...actually, I don't see how that could EVER work, because you're almost certainly going to have DHCP running on the router, and having two DHCP servers on the same subnet is almost universally going to be a bad idea...did you try power cycling both the second modem and the router?
Second, it's pretty obvious from your posted network config that the reason you can't get anywhere with the initially assigned IP is that the gateway is set to 192.168.1.254--i.e., that address, DNS and gateway were assigned by the second modem, but of course since the modem isn't the device establishing the connection, there's nowhere for the internet traffic to go. So....just to be sure, you've got one modem on the WAN port and the other on one of the four remaining ports, right? What happens when you try to access 10.0.0.138 (the other IP to which the modem should respond)? |
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derekm_anon
@teksavvy.com
| reply to TilhasBB
said by TilhasBB  :I removed the DHCP on the Speedtouch modem but now Tomato isn't able to dial in with it. and I am unable to access the modem... any ideas? It looks like you were double nat'd. (i.e. the speedtouch was nat'ing your tomato, which was nat'ing your network - sometimes).
You need to change the speedtouch to bridge mode, and connect it to the WAN port of the linksys.
You then need to enter your PPPoE details into the linksys.
From there, Everything Should Just Work. |
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Davesnothere
@teksavvy.com
| reply to paulwye
said by paulwye :....having two DHCP servers on the same subnet is almost universally going to be a bad idea.... Agreed, and I was alluding to that point in my last post.
said by paulwye :Second, it's pretty obvious from your posted network config that the reason you can't get anywhere with the initially assigned IP is that the gateway is set to 192.168.1.254--i.e., that address, DNS and gateway were assigned by the second modem I do not believe this user has two modems going, at least never said so.
But I do believe they have a Tomato router hooked in between a Combo Modem/Router and the computer(s), and in this situation, the second or phantom DHCP server would be part of rhat Combo unit.
As I perceive it, now that they have turned off the 2nd DHCP server, it has created a NEW problem, because perhaps they do not have their PPPOE login set in the Tomato router, or Gateway or DNS number could still be wrong.
So, can you still currently log into the Tomato router, after you turned off the DHCP of the Modem router ?
If you can, then review whether the suspected settings of Gateway, etc are now showing the previously good _._._.1 setting, or the earlier _._._.254 bad setting, or something else.
And (humour me on this) please enter again from scratch your TSI login settings and confirm that the Tomato router says that you have a successful login.
Any better now ? |
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Davesnothere
@teksavvy.com
| reply to derekm_anon
said by derekm_anon :said by TilhasBB :I removed the DHCP on the Speedtouch modem but now Tomato isn't able to dial in with it. and I am unable to access the modem... any ideas? It looks like you were double nat'd. (i.e. the speedtouch was nat'ing your tomato, which was nat'ing your network - sometimes). You need to change the speedtouch to bridge mode, and connect it to the WAN port of the linksys. You then need to enter your PPPoE details into the linksys. From there, Everything Should Just Work. Damn those Combo Modem Routers ! - They cause more problems than they solve ! (and all to save a few bucks)
And if I had read your post before responding to the one just above it, yes, I have heard of this 'Bridge' mode setting in those beasts, and it sounds like with that plan, you may have it figured out.
And we agree about re-entering the login info.
Do I understand correctly, is that simply a fancy way to tell the unit to completely disable the Router part, in these recent model ST Combo modem/routers ? |
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nigrunze
join:2009-02-14
Cote Saint-Luc, QC
| said by Davesnothere :
Damn those Combo Modem Routers ! - They cause more problems than they solve ! (and all to save a few bucks)
And if I had read your post before responding to the one just above it, yes, I have heard of this 'Bridge' mode setting in those beasts, and it sounds like with that plan, you may have it figured out.
And we agree about re-entering the login info.
Do I understand correctly, is that simply a fancy way to tell the unit to completely disable the Router part, in these recent model ST Combo modem/routers ?
Try starting from scratch. Since you're running Tomato, you can make this easier. On Tomato's Basic Network page, set your modem's IP as 10.0.0.138 (for whatever reason, the speedtouch uses both 192.168.1.254 and 10.0.0.138). Log into the Speedtouch web interface and run the easy setup using the instructions from TekSavvy's FAQ on the forums. Set your modem as bridged and DHCP to be off.
Your modem SHOULD work properly now. |
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TilhasBB
Formally Goden99
Premium
join:2000-08-05
canada
| - Incase there is any confusion.
My Setup
I have TWO modems. Speedtouch 516 and 2Wire 2701
I have WRT54GL Running Tomato/MLPPP Version 1.22-mp3alpha5er1
I am running MLPPP with two connections.
- I powercycled modem and router.
turned on router then turned on modem.
- I have 2wire on WAN and Speedtouch on Port4.
- 10.0.0.138 and 192.168.1.254 nothing happens
- Only Computers in device list on router page.
- The modem was set on Bridge BUT DHCP was on... I never realized. So I went back and disabled it, since then Tomato is only able to connect using the modem on WAN side of router. So I am only getting 1 / 2 connection.
- Good news is, my internet is always working now but at half speed.
nigrunze> When you set the Modem's IP in Tomato's network page thats only for the modem on the WAN side.
But i set it to 10.0.0.138 and it didn't help. |
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derekm
join:2008-02-26
·TekSavvy Solutions..
 ·Rogers Hi-Speed
| said by TilhasBB :- The modem was set on Bridge BUT DHCP was on... I never realized. So I went back and disabled it, since then Tomato is only able to connect using the modem on WAN side of router. So I am only getting 1 / 2 connection. - Good news is, my internet is always working now but at half speed. I've never used Tomato, but my guess is that you'll need to move whatever port you have the 2nd modem plugged in to, to the WAN VLAN.
Maybe someone else running Tomato can tell you how they have it physically/virtually connected. |
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Davesnothere
@teksavvy.com
| reply to nigrunze
said by nigrunze :Try starting from scratch. Since you're running Tomato, you can make this easier. On Tomato's Basic Network page, set your modem's IP as 10.0.0.138 (for whatever reason, the speedtouch uses both 192.168.1.254 and 10.0.0.138). Log into the Speedtouch web interface and run the easy setup using the instructions from TekSavvy's FAQ on the forums. Set your modem as bridged and DHCP to be off. Your modem SHOULD work properly now. A couple of side questions please :
Do I understand correctly, is this Bridge Mode and disabling DHCP method simply a fancy way to tell the ST-516 Combo Modem/Router to completely disable the Router part, so that they behave JUST as a Modem ?
And are you saying that you can tell Tomato firmware what IP address to EXPECT a modem connected to their WAN port to have ?
Thanks |
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Davesnothere
@teksavvy.com
| reply to TilhasBB
said by TilhasBB :- In case there is any confusion.... My Setup I have TWO modems. Speedtouch 516 and 2Wire 2701 I have WRT54GL Running Tomato/MLPPP Version 1.22-mp3alpha5er1 I am running MLPPP with two connections. Good news is, my internet is always working now but at half speed. Two Modems ?
That changes everything !
If you had a Router with 2 WAN ports (load balancing class), I would know what to do.
Does the 2-Wire modem have a hidden router & dhcp server in it too ?
If yes, that could still cause a problem. |
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Davesnothere
@teksavvy.com
| said by TilhasBB :Good news is, my internet is always working now but at half speed. That's encouraging, and would be what I would expect, and is prob'ly coming thru the WAN port modem rather than the other modem.
To verify that, I suggest unplugging the other modem for a moment. |
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TilhasBB
Formally Goden99
Premium
join:2000-08-05
canada | the 2wire works on LAN or WAN port. Tomato is smart enough to find it and dial into it. the 2wire is on 192.168.2.1. |
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TilhasBB
Formally Goden99
Premium
join:2000-08-05
canada
| .....
I put the 2wire in the LAN port and the ST on the WAN port.
2wire 192.168.2.1 ON LAN 4
ST 192.168.1.254 or 10.0.0.138 ON WAN
Router 192.168.1.1
Working now 
Crossing my fingers |
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