Obi110 & 2Wire HGV 3801 - Will Obi110 work on a subnet?

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Spiderbird:
Hi there,

I have a Obi110 hooked via ethernet into a 2Wire HGV 3801 router, and it works perfectly, no problems. But, I'm getting that dreaded 'router behind router' message from the 2Wire, and unless I put the Obi110 in a DMZ area (which I'm not going to), all the nodes in my home network won't get a DHCP address from the 2Wire until the problem is resolved.

SO, I've been thinking about a couple of options:
- Putting the Obi110 on a subnet (i.e. setting a static IP for the Obi110 as 192.168.2.1), keeping the subnet mask and gateway the same (note: this worked previously for a Linksys WRT54GL router when I was attempting to flood the whole house with wireless signal).
- Trying port forwarding as some have suggested here, but I don't think that's going to resolve the issue.

Can anyone give some perspective on the above?

Shale:
You are plugging a router into the 3801 and plugging the OBi110 into the router.

I doubt that the message has anything to do with the OBi. That is to say, I suspect you would get that message even if just a couple computers were plugged in.  In any case, what the 2wire is asking you to do is to turn off DHCP in the router, so that the DHCP will be handled by the 3801. So look into the documentation or web pages for your router to find how to do that.

It is not necessary, but in the 3801 I would then Settings > LAN > IP Address Allocation and change the Address Assignment to a private address from the drop down list. The reason I suggest that is that you will not have to worry if the address is in the right range. Maybe pick an address that ends in 110 if that is one of the choices. Knowing this address will make it easier to access the built-in web page.

Spiderbird:
Hi Shale!  Thanks for responding.

To clarify, the Obi110 is connected to the 2Wire directly.  There is no router in-between the two.  It's connected via ethernet cable from the back of the Obi110 to an available LAN port on the back of the 2Wire HGV 3801 router.

And the 'router behind router' message specifically calls out the Obi110 it's having a conflict with, and asks to put it into DMZ mode with a public IP shared by the 2Wire HGV 3801.

I also have access to the Obi110's administration page via a fixed IP address I assigned for the Obi110 on the 2Wire (in my case, 192.168.1.64).  I can access the admin page no problem, and can see all related administrative screens.  I lose that capability when the Obi110 is placed into DMZ mode.

So, back to my original question... will the Obi110 still work if is placed on a subnet such as 192.168.2.1, thereby getting around the 'router behind router' 2Wire conflict but still allowing for Obi110 dial in/out capability?

Thanks in advance for any replies!

Shale:
For those who might know what is causing the problem, the 3801HGV's default address is 192.168.1.254 with netmask 255.255.255.0.

I am thinking that the 192.168.1.64 address that OP is used as a static address may be interfering with an already used address. 192.168.1.64 may be the start of the range. I have a 3801HGV, but I have changed my default. I would look at the 3801HGV Settings > LAN > IP Address Allocation to see how addresses are currently allocated.

Spiderbird:
Hi Shale,

Thanks again for replying.  I've attached a couple of small screenshots.  One of them shows the IP address allocation for the 2Wire, and the fixed IP address of the Obi110 that I assigned on the 2Wire side.  I also uploaded the warning dialog boxes before/after putting the Obi110 in DMZ mode (and the verification that it is the Obi that's causing the conflict)

edit - Looks like the upload folder is full! - You can find the images here on this imgur album:
http://imgur.com/a/04Ajk#0

And there isn't another address that's using the 192.168.1.64 address on the 2Wire.

Update:  A friend of mine suggested putting the Obi110 into bridge mode.  Does that sound familiar or a possibility?

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