1) broadband connection (isp) ==> isp modem ==> local router (befsr41) ==> switch ==> all computers through one domain ip to make it lan.
It has static ip

2) broadband connection (isp) ==> isp modem ==> local router (befsr41) ==> single computer
no static ip

now, i pick one computer from my lan connection and that computer has two ethernet card. So, i am using two different cables to connect with my computer. One is from broadband connection 1 and other is from broadband connection 2. I have bridge the connection for both connection into my computer. Now, i have plugged out for internet connection. To verify which internet connection i am using. Connection 1 or connection 2. Now, i have verified that i am using connection 2 is working but i am not able use my lan. so, how may i use my lan and also in parallel use connection 2? still, i have plugged out my internect connection 1.