Table of Contents
IP and Networking Basics
Outline
Origins of TCP/IP
Distributed Network Design
Simplified view of the Internet
Internetworks
A small internetwork or “Internet”
The unifying effect of the network layer
OSI Stack & TCP/IP Architecture
Open Systems & TCP/IP
Layered Model Concept
OSI Model
OSI Model
Frame, Datagram, Segment, Packet
Layers 7, 6, 5
Layer 4
Layer 3
Layer 3
Layer 3
Layer 2
Layer 1
OSI and TCP/IP
Protocol Layers: The TCP/IP Hourglass Model
Layer Interaction
Layer Interaction: OSI 7-Layer Model
Layer Interaction: TCP/IP Model
Encapsulation & Decapsulation
Layer 2 - Ethernet frame
Layer 3 - IP datagram
Layer 4 - TCP segment
IP Addressing
Purpose of an IP address
Purpose of an IP Address
Basic Structure of an IP Address
Address Exercise
Address Exercise
Addressing in Internetworks
Address Structure Revisited
Network Masks
Example Prefixes
Special Addresses
Allocating IP Addresses
More Address Exercises
More levels of address hierarchy
Old-style classes of IP addresses
Old-style classes of IP addresses
Netmasks of classful addresses
Traditional subnetting of classful networks
Traditional Supernetting
Classless Addressing
Classless Addressing
Grouping of decimal numbers
Grouping of binary numbers
Grouping of binary numbers
Classless addressing example
Classless addressing exercise
Large Network Issues & Routers
Large Networks
WAN Design
An IP Router
IP router - action for each packet
Forwarding is hop by hop
Hop by Hop Forwarding
Router Functions
Forwarding table structure
Encapsulation and Types of Links
Encapsulation (reminder)
Classes of Links
Point to Point Links
Broadcast links
Broadcast links
NBMA links (Non-broadcast multi-access)
ARP
Ethernet Essentials
Ethernet/IP Address Resolution
Address Resolution Protocol
ARP Table
ARP Frame
Format of an ARP Message
Types of ARP Messages
ARP Procedure
Reverse ARP - RARP
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