Link Server Desconnected every 3min

Hi All,

i Install 2 SQL server in two different Machine. both are running in my LAN.

for my application requirement i link 2 machine SQL Server to my first Server. Everything is working fine when my application is running continually. But if i not doing any thing in application after 3 or 4 min it showing Server 5 Error.

when i try Test Connection is showing Connection Successful after that every thing working fine but this process i do every 3 min.

is there any solution which successfully connected forever?

Thank!

Hitesh Patel