COMP247 Lecture Notes - Lecture 8: Reverse Address Resolution Protocol, Virtual Circuit, Transmission Control Protocol

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

Document Summary

Deliver datagram to recipient transport layer and finally the intended application. Maximum length of the datagram is 65, 536 byes. Hlen=5 (actual length = 5*4=20 bytes) - standard (minimum size) A global identification system necessary for hosts (and routers) Solution: unique identifier is ip address in internet. Internet address defines node"s connection to its network. Multihomed: a device connected to more than one network. Routing: process of choosing a path over which to send packets. Routing occurs at tcp/ip host when it sends ip packets and at an intermediate ip router. Ip uses this in-memory table to make all decisions about routing an ip packet. Forwarding: taking a packet, looking at its da, consulting the table, sending the packet accordingly on the right interface. Routing: process by which forwarding tables are built. Forwarding table versus routing table: separate data structures for the two preferred. Decision has to be made as to where the packet is to be forwarded (router/ host)