The IP protocol stack treats the ATM host adapter as a network interface operating in a LAN-based paradigm. All IP end-nodes in the LIS must be connected to the ATM network and must be able to communicate with each other. IP end-nodes configured in different logical IP subnets must communicate via an IP router. They may not set up a direct VC, even though this is possible. For PVCs, each end-node can just query each known PVC to get the IP addr of the other end.
Some interconnection is needed to other CalREN projects.
Configure as multiple IP subnets. This leads to a scaling problem since the number of PVCs needed grows quadratically, and the switches have a limited table space for PVCs. The BAGNet backbone architecture is currently two switches with six sites on one and nine on the other. This exacerbates the problem.