NETGEAR is aware of a growing number of phone and online scams. To learn how to stay safe click here.
Forum Discussion
LB2120 Invalid IP-Range for Valid Netmask
Hello Netgear support, I find myself re-visiting an old case (29339992) which was closed, and absolutely NOT to my satifaction. In fact, the final notes in the case log clearly shows that I was "dum...
Not sure what you try to achieve. The default 192.168.5.1 IP address (in the 192.168.5.0/24 network) does act as an in-band management address the LB2120 link layer technology used in many Netgwar consumer products.
If you are connecting a system (like a router) to the LB2120 LAN port (yes - LAN) the wireless provider network will assign an IP address and a subnet. This does allow to use the LB2120 for either a single system, unless your mobile contract does allow using a fixed assigned subnet (a rare species), or you can use the LB2120 LAN port to connect a router/security appliance.
Different from the common NAT routers, that 192.168.5.0/24 network and the LAN port is not to connect to a LAN (a pleonasm, I know) where you have all your NATed systems. In general, there is no reason to change the LB2120 in-band management IP address (and subnet) - unless your LAN infrastructure does somehow overlap with the 192.168.5.0/24 network.
Your use case for this product is wrong and does require a review. The LB2120 Data Sheet as well as the LB2120 Product Web Page does clearly show the intended usage for the Internet access in the WAN/Internet and optional to a broadband modem (on the LB2120 WAN port) if the 4G part is used as a fail-over only. It does not replace a common NAT router. I'm amazed the Netgear customer support was not able tp provide you with such an explanation by the way.
Last, your argumentation ref. network classes is wrong: A Class C network is always 255.255.255.0. But in reality, and due to the shortage of IP addresses, the ISP and IT world has changed to classless CIDR.
Afraid, for once nothing to fix on the Netgear side.