Copyright 2003 CCNA 3 Chapter 6 Switches By Your Name
Copyright 2003 Objectives LAN design LAN switches
Copyright 2003 LAN Design Goals Functionality Scalability Adaptability Manageability
Copyright 2003 LAN Design Considerations The function and placement of servers Collision-detection issues Segmentation issues Broadcast domain issues
Copyright 2003 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
Copyright 2003 Layer 1 Design
Copyright 2003 Typical MDF in Star Topologies
Copyright 2003 Layer 1 Documentation
Copyright 2003 Layer 2 Design
Copyright 2003 LAN Topology
Copyright 2003 Microsegmentation
Copyright 2003 Asymmetric Switching
Copyright 2003 Layer 3 Design
Copyright 2003 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.
Copyright 2003 Physical Network Maps
Copyright 2003 VLAN Communication
Copyright 2003 LAN Switches
Copyright 2003 Access Layer Shared bandwidth Switched bandwidth MAC layer bandwidth Microsegmentation
Copyright 2003 Access Layer Switches Catalyst 1900 series Catalyst 2820 series Catalyst 2950 series Catalyst 4000 series Catalyst 5000 series
Copyright 2003 Distribution Layer Aggregation of the wiring-closet connections Broadcast/multicast domain definition VLAN routing Any media transitions that need to occur Security
Copyright 2003 Distribution Layer Switches Catalyst 2926G Catalyst 5000 family Catalyst 6000 family
Copyright 2003 Core Layer The core layer is a high-speed switching backbone. The core layer should be designed to switch packets as fast as possible.
Copyright 2003 Core Layer Switches Catalyst 6500 series Catalyst 8500 series IGX 8400 series Lightstream 1010