Exploration Chapter 5 Slides

Exploration Chapter 5 Slides - OSI network layer CCNA...

Info iconThis preview shows pages 1–7. Sign up to view the full content.

View Full Document Right Arrow Icon
12 May 2009 S Ward Abingdon and Witney College CCNA Exploration Semester 1 1 OSI network layer CCNA Exploration Semester 1 Chapter 5
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
12 May 2009 S Ward Abingdon and Witney College CCNA Exploration Semester 1 2 OSI network layer OSI model layer 3 TCP/IP model Internet layer Application Presentation Session Transport Network Data link Physical Application Transport Internet Network Access TCP, UDP IP Ethernet, WAN technologies HTTP, FTP, TFTP, SMTP etc Segment Packet Frame Bits Data stream
Background image of page 2
12 May 2009 S Ward Abingdon and Witney College CCNA Exploration Semester 1 3 Network layer topics IP version 4 – the most common layer 3 routed protocol Dividing hosts into groups – why and how Routing – sending packets the right way Routing – how routers learn routes IP addressing – in chapter 6
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
12 May 2009 S Ward Abingdon and Witney College CCNA Exploration Semester 1 4 Purpose of layer 3 Decide how to get the data from source to destination, then route it.
Background image of page 4
12 May 2009 S Ward Abingdon and Witney College CCNA Exploration Semester 1 5 Layer 3 protocol A layer 3 protocol such as IP version 4 must: Provide an addressing scheme to identify networks and individual hosts Encapsulate a segment from layer 4 into a packet and include addresses Direct the packet across one or many networks to the destination host Decapsulate (remove the packet header) and give the segment to layer 4.
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
12 May 2009 S Ward Abingdon and Witney College CCNA Exploration Semester 1 6 Network layer protocols Internet Protocol version 4 (IPv4) – the most common Internet Protocol version 6 (IPv6) – designed to replace version 4 eventually Novell Internetwork Packet Exchange (IPX) AppleTalk Connectionless Network Service (CLNS/DECNet)
Background image of page 6
Image of page 7
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 27

Exploration Chapter 5 Slides - OSI network layer CCNA...

This preview shows document pages 1 - 7. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online