1 CCNA 3 v3.1 Module 5 Switches Claes Larsen, CCAI

222 Objectives

333 LAN Design Goals

444 LAN Design Considerations The function and placement of servers Collision-detection issues Segmentation issues Broadcast domain issues

555 Server Placement

666 Collision Domain: Basic Shared Access

777 Ethernet Technology: Segmentation

888 Broadcast Domain

999 LAN Design Methodology Gather requirements and expectations Analyze requirements and data Design the Layer 1, 2, and 3 LAN structure, or topology Document the logical and physical network implementation

10 Gather Requirements and Expectations

11 Analyze Requirements and Data

12 Develop LAN Topology

13 Developing a LAN Topology

14 Documentation Logical Diagram

15 Extended Star Topology in a Multi-Building Campus

16 Cut Sheet

17 Setting Up VLAN Implementation

18 Use Routers to Impose Logical Structure

19 Addressing Maps

20 Developing a Layer 1 LAN Topology

21 Cable Characteristics and IEEE Values

22 Star Topology Using CAT 5 UTP

23 Typical MDF in Star Topology

24 Multi-Building Campus

25 Extended Star Topology in a Multi-Building Campus

26 Extended Star Topology

27 Documentation Logical Diagram

28 Cut Sheet

29 Developing a Layer 2 LAN Topology

30 Microsegmentation of the Network

31 Asymmetric Switching

32 Collision Domain Size with Hubs

33 Layer 2 Switch Collision Domains

34 Layer 2 Switch with Hubs

35 Layer 2 Migrate to Higher Bandwidth

36 Layer 3 Router Implementation

37 Use Routers to Impose Logical Structure Routers provide scalability because they serve as firewalls for broadcasts. They can also provide scalability by dividing networks into subnetworks, or subnets, based on Layer 3 addresses.

38 Layer 3 Router for Segmentation

39 Logical Addressing Mapped to Physical Network

40 Addressing Maps

41 Logical Network Maps and Addressing Maps

42 Physical Network Maps

43 Setting Up VLAN Implementation

44 VLAN Communication

45 Hierarchical Design Model: Access Layer

46 Access Layer

47 Functions of the Access Layer

48 Features of Access Layer Switches

49 Access Layer Switches Catalyst 1900 series Catalyst 2820 series Catalyst 2950 series Catalyst 4000 series Catalyst 5000 series

50 Distribution Layer

51 Distribution Layer In a switched network, the distribution layer includes several functions such as the following: Aggregation of the wiring-closet connections Broadcast/multicast domain definition VLAN routing Any media transitions that need to occur Security

52 Distribution Layer Switches Cisco Catalyst 2926G Cisco Catalyst 6000 Family Cisco Catalyst 5000 Family

53 Core Layer The core layer is a high-speed switching backbone. The core layer should be designed to switch packets as fast as possible.

54 Core Layer Switches Catalyst 6500 series IGX 8400 series Catalyst 8500 series Lightstream 1010

55 Summary