Recap: Internets Switches versus routers Switches move frames through a single network(lan or Wan Routers move packets through internets Messages Messages in single networks are called frames Messages in internets are called packets Packets are encapsulated within(carried inside rames 88 Recap: Internets • Switches versus Routers – Switches move frames through a single network (LAN or WAN) – Routers move packets through internets • Messages – Messages in single networks are called frames – Messages in internets are called packets – Packets are encapsulated within (carried inside) frames