Internet and Bridge Connection?

[MGT]

hey everyon, a quick question...
let's say i have 2 internet connection
connection (A) for the LAN
and connection (B) for a USB modem
Both connections are bridged together...

My question is...

Assuming i'm running an application that requires constant internet access, IE online game ...
If connection (A) fails, does connection (B) fill it's place automatically?.. or will my applican't disconnect from the internet?

Thanx in advance

[I Like Stories]

Assuming your using two different service providers?

The application will disconnect.

How it works is your application has established a path to the game server through ISP A. Consider that game server needs to be able to connect back towards you too. Now if your connection to ISP A fails, the game server doesn't know how to send the packets back to you. The game server only knows about the IP address of ISP A. Game server doesn't know about ISP B unless your application knows the connection was broken and can somehow reestablish the path using a different IP address.

Eventually the connection will time out.

With a NAT'd Internet connection you could run dual connections to the same ISP,and providing the ISP will allow you to run a protocol called Equal Cost Multi-Path (ECMP) you have two physical connections to the same ISP, if one fails the other automatically backs it up.

You would need a much more sophisticated router than the typical consumer grade router and two drops from the same ISP. The ISP needs to run ECMP too.

Which is all well and good, but the most likely thing to fail is the ISPs network, not your connection to them.