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[psiebenshuh]

I'm replacing my DGL-4100 with a DIR-657.  I've used several DLink routers over the years, and this is the first time I've had a problem.

DIR-657
HW Version A1
FM Version 1.02 (also tried 1.01)
Charter Internet (Missouri) with Motorola SB-6121
Ooma Telo between Modem and router (suggested setup from Ooma)

My DGL-4100 is setup with DHCP.  The Ooma Telo assigns the IP address.  The only thing other thing I've done is specifically assigned Charter's DNS servers.  The system has been solid with the Ooma.

I've tried placing the DIR-657 in place of the DGL-4100.  Although the status page showed connection, I couldn't connect to anything via the WAN connection.  I even tried the setup without the Ooma with same result.  I tried several times, rebooting the entire setup, factory reset and reconfiguration, etc using the software cd, built in wizards, and manual configuration.  I finally got it to work (no idea why it did).  The setup was Modem->Ooma->DIR-657.  That worked for a few days until we had a power failure.  Restarting all or each component in order did not restore internet connection - I had the same situation as I did during installation.

I updated firmware to 1.02, did a factory reset, and set everything up again (including DHCP reservations).  I was able to connect to the internet again.  Yesterday, I lost internet connection again.  Restarting the DIR-657 did not restore it.

I can put my DGL-4100 in place of the DIR-657 and restore connection.

It appears that the WAN port on the DIR-657 loses connection.

The Ooma has a web interface that I can access with it's IP address.  I've gone into that interface via the DGL-4100 and checked it.  It has DHCP which assigns the address to the router.  It has DMZ capability.  Changed the configuration to place an IP address in the DMZ.  I then swapped out the DGL-4100 with the DIR-657 and configured the DIR-657 with a static IP address (from the DMZ).  Still no luck with internet connectivity.  I've gone back to DHCP.  The status screen shows connection, just no internet.  I've used both Charter's DNS servers and Google.

I'm using wired and wireless systems to check connectivity.  I'm not even looking at the wireless aspects of the router at this point, just trying to get internet connectivity via wire.

[FurryNutz]

Link>Welcome!

Can you give us a diagram of your network lay out from the ISP modem and how each device is connected thru each router?
example:
ISP modem>ooma>657>devices?

[psiebenshuh]

ISP Modem>Ooma>657 - 3 of the 4 LAN ports go to PCs, the 4th goes to a DLink 8 port gigabit switch.  I've used a couple different PCs that are either connected directly to the 657 or the 8 port switch.

The PC will show it has a connection with no internet connectivity.  I can get to the interface of the 657, but not past it to the Ooma. 

I'm at work now, but will be home in about 4 hours to try anything.   I have absolutely no problems with the DGL-4100 in place of the 657 in the same setup. 

[FurryNutz]

You possibly have >Double NAT condition.

I recommend trying this preferred connection platform:
ISP Modem>DIR-657>DMZ on 657 with IP address for OOMA>Omma
                           >Rest of other wired devices to the back of the 657.

[psiebenshuh]

I will try that when I get home.

I did configure the router to be the address in the Ooma's DMZ.  Shouldn't have QoS problems with my internet for the Ooma.

[FurryNutz]

The Ooma DMZ should work however we don't know for sure. To help eliminate possible causes, test the D-Link routers before the Ooma Device.

I have this router and use the Motorola SB-6120 cable modem and it works well in this configuration. We've seen issues with using Ooma as a host router and external routers before here in the forums.

Keep us posted.

[psiebenshuh]

Got it working this morning.  ISP Modem>657.  I moved the Ooma behind the router, and it's working without putting it in the DMZ or any special port settings. 

I think I figured out what was causing the problem with the 657, because I kept having problems with lost internet even with the Ooma removed.  I have an old DirecTV TiVo with a D-Link USB adapter, and that adapter has a lot of activity.  When I have that plugged into my 8 port switch, I lose internet.  Didn't affect the DGL-4100 at all, but the 657 didn't like it.

It's been working for about 6 hours now.  We'll see if it continues.

[FurryNutz]

Glad you got it working better. Keep us posted.