COMP247 Lecture Notes - Lecture 7: Internet Protocol Suite, Optical Fiber, Collision Detection

• School: Macquarie University
• Department: Computing
• Course: COMP247
• Professor: Damian Jurd

Document Summary

A backbone network is a high-speed (cid:374)et(cid:449)o(cid:396)k li(cid:374)ki(cid:374)g a(cid:374) o(cid:396)ga(cid:374)isatio(cid:374)"s lans together to transfer information between them and provide connections to other backbones, mans and. Disconnected network: disconnected networks can transmit at the same time as each other, but they o(cid:271)(cid:448)iously (cid:272)a(cid:374)"t (cid:272)o(cid:373)(cid:373)u(cid:374)i(cid:272)ate, so the t(cid:449)o (cid:374)et(cid:449)o(cid:396)ks o(cid:271)(cid:448)iously a(cid:396)e(cid:374)"t a (cid:271)a(cid:272)k(cid:271)o(cid:374)e. Repeater/hub: two networks connected by a hub/repeater creates a single collision domain, shares the physical layer and data rate, connects network at a bit level, too many collisions in comparison to a backbone. Components of a backbone network: cabling, functions the same way as in lans, optical fibre is often chosen because of high data rates, devices (hardware, computers or special purpose devices for interconnecting networks, repeaters/hubs, bridges/switches, routers, gateways. If port for source and destination is the same, then do nothing, the destination will have already seen this frame: search all forwarding tables for destination addresses except for port p.