Architectural principles (contd)
IP over everything: (Vint Cerf, VP, MCI)
- An internetworking protocol which works over all underlying sub-networks and provides a single, simple service model (“best-effort delivery”) to the user.
- Translation vs Overlays
- Translation: Eg. Bridges, gateways. Find an identical subset of services and map.
- (+) No software changes in networks required.
- (-) When many networks, subset = 0