ITM 301 Lecture Notes - Lecture 3: Broadcast Domain, Classless Inter-Domain Routing, Default Gateway

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

Document Summary

Segmentation: dividing a network into multiple smaller networks, traffic on one network is separated from another network"s traffic, each network is its own broadcast domain. Accomplish the following: enhance security, improve performance, simplify troubleshooting. Ipv4 address is divided into two parts: network id and host id. 192. 168. 89. 127/24: 24 represents the number of 1s in the subnet mask and the number of bits in the network id, known as a cidr block. To better manage network traffic, segment the network so that each floor contains one. Class a, class b, and class c networks: can be subnetted. Each class has different number of host information bits usable for subnet information. Varies depending on network class and the way subnetting is used. Lan subnetting: lan"s devices interpret device subnetting information, external routers. Need network portion of device ip address. Supernetting: combine contiguous networks that all use the same cidr block into one supernet, also called classless routing or ip address segmentation.