LB2120 wan ip address

Question

Hi! I'm trying to configure as failover an LB2120, but i not see a way to configure the wan ip address. I have some external services that i need to reach on the inside lan.How i can do that?Thanks!

schumaku · Answer

masterx81&nbsp;wrote:Hi! I'm trying to configure as failover an LB2120, but i not see a way to configure the wan ip address.The only WAN IP the LB2120 does handle is the 4G/3G one - very uncommon that you have (and can!) configure this address fixed. Your WWAN provider might offer some "static" addresses on your SIM/contract - the IP address&nbsp;is done by the provider.&nbsp;masterx81&nbsp;wrote:I have some external services that i need to reach on the inside lan.Any kind of DDNS should do the job, isn't it?&nbsp;Not sure&nbsp;you got it right: This LB2120 isn't intended to bring over the broadband IP address to the mobile 4G/3G.&nbsp;&nbsp;

masterx81 · Answer

The problem is the static ip address of the wan ethernet interface. In any case i've resolved in a "not so nice" way of using a router with dhcp and created a reservation before the lb2120. All work as it should but there is one more device that can be avoided.

schumaku · Answer

That's by design - the WAN Ethernet interface is just a L2 port, and has no routing functionality. It is indeed intended for connecting to an existing broadband (or whatever) router only. Only the WWAN mobile network port is routed/NATed.

masterx81 · Answer

Maybe it's not designed to be a router, but actually it is a router, with nat and port forwarding. The only thing disabled is the ability to use a static ip address...

schumaku · Answer

Again no - not for the LAN to the (misleadinlgy named?) WAN port: Here it's just a L2 bridge. And on that level it does sniff if the WAN connected Internet router still has connectivity to the world, on the same L2 level it does catch the traffic for the device management IP address trafic.&nbsp;NAT and port forwarding does only apply for the WWAN data path.

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LB2120 wan ip address

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