8.1 Subnetting an IPv4 Network
8.1.1 Network Segmentation
- 8.1.1.1 Broadcast Domains
- 8.1.1.2 Problems with Large Broadcast Domains
- 8.1.1.3 Reasons for Subnetting
8.1.2 Subnetting an IPv4 Network
- 8.1.2.1 Octet Boundaries
- 8.1.2.2 Subnetting on the Octet Boundary
- 8.1.2.3 Classless Subnetting
- 8.1.2.4 Video Demonstration – The Subnet Mask
- 8.1.2.5 Video Demonstration – Subnetting with the Magic Number
- 8.1.2.6 Classless Subnetting Example
- 8.1.2.7 Creating 2 Subnets
- 8.1.2.8 Video Demonstration – Creating Two Equal-Sized Subnets
- 8.1.2.9 Subnetting Formulas
- 8.1.2.10 Creating 4 Subnets
- 8.1.2.11 Video Demonstration – Creating Four Equal-Sized Subnets
- 8.1.2.12 Video Demonstration – Creating Eight Equal-Sized Subnets
8.1.3 Subnetting a /16 and /8 Prefix
- 8.1.3.1 Creating Subnets with a /16 prefix
- 8.1.3.2 Creating 100 Subnets with a /16 Network
- 8.1.3.3 Calculating the Hosts
- 8.1.3.4 Video Demonstration – Creating One Hundred Equal-Sized Subnets
- 8.1.3.5 Creating 1000 Subnets with a /8 Network
- 8.1.3.6 Video Demonstration – Subnetting Across Multiple Octets
8.1.4 Subnetting to Meet Requirements
- 8.1.4.1 Subnetting Based on Host Requirements
- 8.1.4.2 Subnetting Based on Network Requirements
- 8.1.4.3 Network Requirement Example
- 8.1.4.4 Activity – Calculate the Subnet Mask
- 8.1.4.5 Activity – Determining the Number of Bits to Borrow
- 8.1.4.6 Lab - Calculating IPv4 Subnets
- 8.1.4.7 Packet Tracer - Subnetting Scenario
- 8.1.4.8 Lab – Designing and Implementing a Subnetted IPv4 Addressing Scheme
8.1.5 Benefits of Variable Length Subnet Masking
- 8.1.5.1 Traditional Subnetting Wastes Addresses
- 8.1.5.2 Variable Length Subnet Masks
- 8.1.5.3 Basic VLSM
- 8.1.5.4 Video Demonstration – Basic VLSM
- 8.1.5.5 VLSM in Practice
- 8.1.5.6 VLSM Chart
- 8.1.5.7 Video Demonstration – VLSM Example
- 8.1.5.8 Activity – Practicing VLSM