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Coddy

IP Addressing and Subnetting

via Coddy

Overview

Master IP addresses from the bits up: binary, IPv4 anatomy, subnet masks, CIDR, subnetting drills, private ranges, network planning with VLSM, and a first look at IPv6. Practice everything in the terminal.

Prerequisites:

  • Comfortable running commands in a terminal
  • No networking knowledge required

Syllabus

Bits and Binary

  • Numbers as Bits
  • Binary to Decimal
  • Powers of Two
  • Recap - Binary Warm-up

IPv4 Anatomy

  • Four Octets
  • The 32-Bit View
  • Network and Host
  • Valid or Not
  • Recap - Read an Address

The Subnet Mask

  • What a Mask Does
  • Mask to Prefix
  • Prefix to Mask
  • ANDing It Out
  • Recap - Mask Basics

CIDR Notation

  • Goodbye Classes
  • Reading CIDR
  • Block Sizes
  • Recap - CIDR Reading

Inside a Subnet

  • Network Address
  • Broadcast Address
  • Usable Hosts
  • First and Last Host
  • Recap - Subnet Facts

Subnetting Drills

  • The Block Size Trick
  • Which Subnet Am I In
  • Splitting a /24
  • Splitting Again
  • Recap - Subnetting Drills

Special Addresses

  • Private Ranges
  • Loopback
  • Link-Local
  • Zero and Broadcast

Planning Networks

  • Right-Sizing
  • VLSM Step by Step
  • Allocation Order
  • Checking for Overlap
  • Recap - Plan a Network

IPv6 First Steps

  • Why IPv6
  • Reading IPv6
  • Prefixes in IPv6
  • Recap - IPv6 Basics

Capstone - The Office

  • The Floor Plan
  • Sizing Each Team
  • Carving the Block
  • The Router's View
  • Recap - Ship the Plan

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