Let me explain to you the Scenario , im under a Router and from that router the connection goes to a Layer 2 Switch ( Highly Intelegent ) Now from this switch there goes around 7 sub networks ,

How ever each subnetwork is being able to communicate within theriselves but cannot communicate with other subnetworks though they are under the same L3 Switch. i understand that the Gateway address differs for each subnetworks from the L3 swith.

But is there any way to Communicate among these sub networks ?