Difference between revisions of "CCNA Explorer 3 LAN 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

Redundant Links

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 Forwarding rates Cisco Catalyst Switch Guide Link Aggregation Switch faetures: PoE Switch faetures: L3 Access Layer features Distribution Layer features Core Layer features