How does dual lan controller mb work?

nanowatt · February 16, 2016

The question is quite simple.What will happen if i plug 2 ethernet connectors in 2 different sockets of the same mb, both providing internet coming directly from the operator.Will it give me larger bandwidth or higher speeds?

Sunshine1868 · February 16, 2016

You will not get higher bandwidth or higher speeds.

The only way to achieve this would be to ensure the MB supports a link-aggregation protocol such as LACP. Doing this however requires that every device in the network that you want this larger bandwidth to "touch" ALSO supports LACP. Most consumer-grade hardware (switches, routers, etc.) DO NOT support link-aggregation in any way. So unless the ISP's device supports LACP and you are allowed to configure it, no, your bandwidth will not be any higher.

As for what really happens: your Network Interface Cards (NICs) will simply be assigned 2 different IP addresses, one primary and one secondary. your PC will likely fail-over to the secondary if the primary fails.

Altecice · February 16, 2016

I dont believe it will give you larger bandwith, they will just show up as Local Area Connection #1, #2... Im not sure if you can team them together but I doubt it will be enabled by default.