CCNA Explorer 3 LAN Design

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Switched LAN Architecture

Hirarchical Network Design

Benefits of a Hirarchical Network

  • Scalability
    • Hierarchical netowrk can be expanded easily
  • Redundancy
    • Redundancy at the core and distribution level ensure path availability
  • Performance
    • Link aggregation between levels and high-performance core and distribution level switches allow for near wire-speed throughout the network
  • Security
    • Port security at the access level and policies at the distribution level make the network more secure
  • Manageability
    • Consistency between switches at each level makes management more simple
  • Maintainablity
    • The modularity af hierarchical design allows for the network to scale without becoming overly complicated
Network diameter

Bandwith Aggregation

bandwith Aggregation

Redundant Links

Redundant Links

Converged Networks

Converged networks - One to rule them all
Voice network
Video network
Data network

Matching Switches to Specific LAN Functions

Locate heavy traffic servers close to the users
  • Bandwidth aggregation and switch forwarding rates are important factors to consider when attempting to eliminate bottlenecks
  • Switches selected for data centers should be higher performing switches than the switches you would find in the wiring closets at the access layer
Topology Diagrams

Switch Form Factors

Switch Form Factors
Forwarding rates
Cisco Catalyst Switch Guide

Cisco Catalyst 3750-E StackWise Plus

Link Aggregation

Link Aggregation

Power over Ethernet(PoE)

Switch faetures: PoE
Cisco Compact Series Switches With PoE Pass-Through

Layer 3 Features

Switch faetures: L3

Access Layer Switch Features

Access Layer features

Distribution Layer Switch Features

Distribution Layer features

Core Layer Switch Features

Core Layer features
Features of Cisco Catalyst Switches