ITM 301 Lecture Notes - Lecture 5: Dot-Decimal Notation, Classful Network, Internet Protocol Suite

• School: Ryerson University
• Department: Information Technology Management
• Course: ITM 301
• Professor: Nurul Huda

Document Summary

Separates network into multiple logically defined segments (subnets). (geo locations, department boundaries, tech type) Reasons to separate traffic: enhance security, improve performance, simplify troubleshooting. Fixed network id size limits number of network hosts. Difficult to separate traffic from various parts of a network. Subnet mask bits(ipv4): 1"s = network info, 0"s = host info. Combining bits (and): 1 bit + 1 bit = 1, 0"s + any other bit = 0. Special addresses: used as subnet masks. cannot be assigned to node network interface (ex. Calculating ipv4 subnets: (2^n)-2 = y n: # of subnet mask bits needed to switch from 0 to 1. Lan subnetting: lan"s devices interpret device subnetting information. Provides additional ways of arranging network and host information in an ip. Conventional network class distinctions do not exist. Subdividing class c network into 6 subnets of 30 addressable hosts each. Supernet: subnet created by moving subnet boundary lef.