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