User:Itpastorn/dko/ccna1-3.1-9

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TCP/IP Protocol Suite and IP addressing

Contents

Overview CCNA 1 - Module 9 (3.1)

  • Why the Internet was developed and TCP/IP and the design of the Internet
  • The four layers of the TCP/IP model
  • Describe the functions of each layer of the TCP/IP model
  • The OSI model vz. the TCP/IP model
  • The function and structure of IP addresses
  • How and why sub- and supernetting. CIDR.
  • Public vz. private addressing
  • Reserved IP addresses
  • Static and dynamic addressing
  • Routing

[edit] Introduction to TCP/IP

[edit] History and future of TCP/IP

[edit] Application Layer Protocols

Sample chapter in PDF-format from CCNA 4.0

[edit] Transport layer

Covered in detail in module 11

[edit] Internet layer

Internet Protocol

  • IPv4
    • Address Classes
    • Network address
    • Broadcast address
  • IPv6
  • Hostname
  • /etc/hosts

[edit] Network Access

[edit] The OSI model and the TCP/IP model

Also explained in Module 2#Networking_Models

[edit] Internet architecture

  • "The cloud"
  • Abstract physical details from users
  • Diversity of application and network access layer techniques
  • "Dual homed device"
  • Fault tolerance
  • Redundant paths (routing)

[edit] Internet Addresses

[edit] Addressing

IPv4 uses 32 bits. Alternatives to IP:

[edit] Decimal and binary conversion

Also explained in Module 1#Network_Math

[edit] IPv4 addressess

  • Hierarchical
    • Network part
    • Host part

[edit] IP address classes

  • A-E class (most significant bits pattern, range, subnet mask, usage)
  • CIDR

[edit] Reserved IP addresses

[edit] Public and private IP addresses

  • IANA
  • Internet Service Provider (ISP)
  • Public addressess are unique
    • 10.0.0.0 - 10.255.255.255
    • 172.16.0.0 - 172.31.255.255
    • 192.168.0.0 - 192.168.255.255

Network Address Translation (NAT)

[edit] Introduction to subnetting

  • "break a large network up into smaller, more efficient and manageable segments"
  • By borrowing host bits.

[edit] IPv4 versus IPv6

  • 4 octets = 32 bits = 4 billion addresses. Dotted numerical notation.
  • 16 octets = 128 bits = 640 sextrillion addresses. Hexadecimal notation, with shortening rules.

[edit] Obtaining an IP address

[edit] Obtaining an Internet address

MAC addresses are unroutable and only locally significant

[edit] Static assignment of an IP address

[edit] RARP IP address assignment

Reverse ARP - obsolete. Assigns only IP.

[edit] BootP IP address assignment

Bootstrap Protocol - Can assign more info, but is not dynamic.

[edit] DHCP IP address management

DHCP at Learn Networking

[edit] Problems in address resolution

IP and MAC address must match. Advanced topics: Proxy ARP, Common Address Redundancy Protocol(CARP)

[edit] Address Resolution Protocol (ARP)

Advanced topics:

  • Arping
  • /proc/net/arp
  • /etc/hosts
  • /etc/ethers

[edit] Extra topics (in addition to CCNA)

[edit] Additional resorces (besides Wikipedia)

[edit] Navigation