How to access LM1200 on Network

[SomebodySysop]

I have Netgear LTE Modem LM1200. 

Firmware Version: EC25AFFDR07A09M4G
Firmware Build Date: Unknown
App Version: NTG9X07C_20.06.09.00
Web App Version: LM1200-HDATA_03.03.103.201

If I plug it into ethernet port of PC, I can access it at 192.168.5.1.  However, I have so far been unable to assign it an IP that which can reach it on my network.

I want to be able to connect it to my network and access it in order to troubleshoot, but no IP that I assign it (whether in my 192.168.1.0/24 range or outside that range) is accessible on my network.  In fact, so far, no IP other than 192.168.5.1 is even accessible when device is plugged into PC.

Is there some documentation on this?  Can someone please assist?  

Thanks!

[SomebodySysop · Accepted solution]

Solved the problem.  I had to go into advanced settings -> lan: Select "router" mode, then turn off dhcp, then change ip (192.168.1.253 in my case), then switch to "bridge" mode, then save. A lot of hoops for sure, but when I did this and plugged lm1200 into my 192.168.1.0/24 network, I was able to reach the dashboard on the network.

[SomebodySysop · Accepted solution]

Solved the problem.  I had to go into advanced settings -> lan: Select "router" mode, then turn off dhcp, then change ip (192.168.1.253 in my case), then switch to "bridge" mode, then save. A lot of hoops for sure, but when I did this and plugged lm1200 into my 192.168.1.0/24 network, I was able to reach the dashboard on the network.

[SomebodySysop]

Decided to go ahead and document my entire process for setting up software-based failover using the LM1200 modem: https://www.youtube.com/watch?v=WG0Mh4Ts9GQ