Virtual circuit In virtual circuit, a preplanned route is established before any packets are sent, then all packets follow the same route Each packet contains a virtual circuit identifier instead of destination address and each node on the preestablished route knows where to forward such packets the node need not make a routing decision for each packet. Example: X25, Frame relay atm 1616 Virtual Circuit • In virtual circuit, a preplanned route is established before any packets are sent, then all packets follow the same route. • Each packet contains a virtual circuit identifier instead of destination address, and each node on the preestablished route knows where to forward such packets. —The node need not make a routing decision for each packet. • Example: X.25, Frame Relay, ATM