ccna 3 v3.0 module 5 switches
DESCRIPTION
CCNA 3 v3.0 Module 5 Switches. Purpose of This PowerPoint. This PowerPoint primarily consists of the Target Indicators (TIs) of this module in CCNA version 3.0. It was created to give instructors a PowerPoint to take and modify as their own. This PowerPoint is: - PowerPoint PPT PresentationTRANSCRIPT
222© 2003, Cisco Systems, Inc. All rights reserved.
Purpose of This PowerPoint
• This PowerPoint primarily consists of the Target Indicators (TIs) of this module in CCNA version 3.0.
• It was created to give instructors a PowerPoint to take and modify as their own.
• This PowerPoint is:
NOT a study guide for the module final assessment.
NOT a study guide for the CCNA certification exam.
• Please report any mistakes you find in this PowerPoint by using the Academy Connection Help link.
333© 2003, Cisco Systems, Inc. All rights reserved.
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LAN Design Goals
• Functionality
• Scalability
• Adaptability
• Manageability
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LAN Design Considerations
• The function and placement of servers
• Collision-detection issues
• Segmentation issues
• Broadcast domain issues
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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
101010© 2003, Cisco Systems, Inc. All rights reserved.
Extended Star Topology in a Multi-Building Campus
181818© 2003, Cisco Systems, Inc. All rights reserved.
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.
232323© 2003, Cisco Systems, Inc. All rights reserved.
Access Layer
• Functions of the Access Layer:
Shared Bandwidth
Switched Bandwidth
MAC Layer Bandwidth
Microsegmentation
242424© 2003, Cisco Systems, Inc. All rights reserved.
Access Layer Switches
• Catalyst 1900 series
• Catalyst 2820 series
• Catalyst 2950 series
• Catalyst 4000 series
• Catalyst 5000 series
262626© 2003, Cisco Systems, Inc. All rights reserved.
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
272727© 2003, Cisco Systems, Inc. All rights reserved.
Distribution Layer Switches
Cisco Catalyst 2926G
Cisco Catalyst 6000 Family<not pictured>
Cisco Catalyst 5000 Family
282828© 2003, Cisco Systems, Inc. All rights reserved.
Core Layer
The core layer is a high-speed switching backbone. The core layer should be designed to switch packets as fast as possible.