© 2007 Cisco Systems, Inc. All rights reserved.Cisco Public 1 ETHERNET Derived From CCNA Network Fundamentals – Chapter 9 EN0129 PC AND NETWORK TECHNOLOGY I

2 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Characteristics of Network Media used in Ethernet  Characteristics of Ethernet in its early years.

3 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Characteristics of Network Media used in Ethernet  Emergence of the LAN switch as a key innovation for managing collisions on Ethernet-based networks

4 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Characteristics of Network Media used in Ethernet  Characteristics of state-of-the-art Ethernet and its utilization of cabling and point-to-point topography

5 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Physical and Data Link Features of Ethernet  Standards and Implementation

6 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Physical and Data Link Features of Ethernet  How the Ethernet operates across two layers of the OSI model

7 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Physical and Data Link Features of Ethernet  Logic Link Control – Connecting the Upper Layers

8 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Physical and Data Link Features of Ethernet  Media Access Control (MAC)

9 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Physical and Data Link Features of Ethernet  Physical Implementations of the Ethernet

10 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Function and Characteristics of the Media Access Control Method  MAC in Ethernet

11 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Function and Characteristics of the Media Access Control Method  Carrier Sense Multiple Access with Collision Detection

12 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Function and Characteristics of the Media Access Control Method  Ethernet Timing

13 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Layer 2 addressing and its Impact on Network Operation and Performance  The Frame – Encapsulating the Packet

14 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Layer 2 addressing and its Impact on Network Operation and Performance  The Ethernet MAC Address

15 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Layer 2 addressing and its Impact on Network Operation and Performance  Hexadecimal Numbering and Addressing

16 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Layer 2 addressing and its Impact on Network Operation and Performance  Another Layer of Addressing

17 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Layer 2 addressing and its Impact on Network Operation and Performance  Ethernet Unicast, Multicast and Broadcast

18 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Compare and Contrast the Use of Ethernet Switches versus Hubs in a LAN.  Legacy Ethernet – Using Hubs

19 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Compare and Contrast the Use of Ethernet Switches versus Hubs in a LAN.  Ethernet – Using Switches

20 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Compare and Contrast the Use of Ethernet Switches versus Hubs in a LAN.  How a switch can eliminate collisions, backoffs and re- transmissions, the leading factors in reduced throughput on a hub-based Ethernet network

21 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Explain the Address Resolution Protocol (ARP) process.  Mapping IP to MAC Addresses

22 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Explain the Address Resolution Protocol (ARP) process.  ARP – Destinations Outside the Local Network

23 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Explain the Address Resolution Protocol (ARP) process.  ARP – Removing Address Mappings

24 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Explain the Address Resolution Protocol (ARP) process.  ARP Broadcasts - Issues