Using MR1100 Nighthawk M1 as modem for D6200 router

[Jeffreo]

Hi all, 

I have an existing D6200 modem router which we've typically used for our ADSL2 connection. New house has poor quality line and the connection is slow, so I've bought a Nighthawk M1 MR1100 to use a 4G connection instead. I am hoping to use the MR1100 as a 4G modem and connect the ethernet interface to the WAN port of the D6200 to share the connection with our existing network. Not entirely sure how best to set this up. Should I put the MR1100 in IP passthrough? And do I need to do any specific configuration of the WAN interface for the D6200?

Any help or guidance is appreciated!

Cheers

Jeff

[Jeffreo]

Update on the situation. I put the M1 into IP passthrough, connected ethernet cable between M1 and D6400 WAN port, and the D6400 is successfully obtaining IP and DNS details on the WAN interface. However the D6400 is being allocated a subnet of 255.255.255.255 for the WAN interface and there is no internet connectivity for attached devices. If I manually allocate the D6400 WAN subnet to 255.255.255.0  then everything works great and there is internet connectivity for all devices. However when rebooting the M1 the IP allocated by the ISP will change, and connectivity drops. 

Does anyone know why the IP pasthrough function on the M1 is passing the 255.255.255.255 subnet through to the D6400?

[haller]

Any updates to this IP passthrough issue?  I'm having the exact same situation with the M1 connected to a Linksys E4200.  The M1 is passing 255.255.255.255 as the WAN subnet mask.  If i change the router to static and use the same values except change subnet mask to 255.255.255.0 then everything works (until the M1 reboots and is assigned a new WAN IP).  It seems like the M1 is incorrectly passing an invalid subnet mask.

[Jeffreo]

No updates sorry. Netgear support was initially excellent, but quickly deteriorated to woeful or non-existent when the case escalated beyond typical reboot type troubleshooting. Case #05562698 for reference if it helps. Netgear have refused to address the case for a few months now and I am very dissapointed given that both products are under their control.  

I have worked around the issue for now by using the Nighthawk as modem/router with Wifi disabled, and the D6200 as Wifi access point. Not ideal as I would like to use some of the more advanced features of the D6200 but at least it's functional.

Cheers

Jeff

[W1lliam]

My M1 works without problem when setting to IP Passthrough mode, the router behind is set as DHCP for its WAN port.

[Jeffreo]

Hi Will - can you advise what firmware your M1 is running, what model / firmware for your router, and what subnet your router is being allocated on it's WAN? Would be super helpful.

[W1lliam]

I am staying with Telstra device, FW NTG9X50C_10.25.01.01, Router's Subnet Mask is 255.255.255.255, not sure if it matters, DNS server was set to manual on my Router behind.

[Jeffreo]

Thanks Will. Would you mind confirming what model router you are using, and what firmware on the router? 

[W1lliam]

I had tried with different models of router from Netgear, R7800/XR500/R9000, all with latest stock FW. None of them is having problem.

Was staying with M1 that WiFi is enabled while router connected via its Ethernet, to reduce thermal issue on M1, I then turned it to IP Passthrough mode (where WiFi will be disabled). It works prior to the change, and I don't experience any issue when it is turned to IP Passthrough mode.

[haller]

My Nighthawk is the latest firmware version (NTG9X50C_12.02.06.01 AT&T version).  Under the Network tab of the status page on M1 it claims an IPV4 mask of 255.255.255.0 however when IP Passthrough is enabled it passes 255.255.255.255 to the router.  It seems like 255.255.255.255 mask should work for the WAN side since the M1 is the only host on that network.  It is strange that with IP Passthrough enabled and setting the router to use DHCP on the Internet IP it does not work but static Internet IPsetting and manually changing mask to 255.255.255.0 allows it to work.  I also have M1's DHCP disabled and auto DNS mode with IP Passthrough.  I've got a number of hosts on the internal network that get confused by double NATing so I'm really hoping netgear can help figure the IP Passthrough.  Maybe there is a firware difference with the AT&T version?

Different topic, but it's also odd that my battery drains down to 51% while plugged in to wall adaptor whenever the ethernet jack is being used (even with wireless disabled and wi-fi range set to short).  If the wall adaptor had trouble supplying enough current I would expect to to continue draining until the battery was at 0%.  Only time i've been able to get a full charge is when nothing is connected to the ethernet jack.  I'll have to post this issue under a different thread.