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CHAPTER 1 : DESIGNING AND SUPPORTING COMPUTER NETWORKS - Coggle Diagram
CHAPTER 1 : DESIGNING AND SUPPORTING COMPUTER NETWORKS
Explain How a Hierarchical Network Design Creates a Stable, Reliable, Scalable Network
Network requirements:
Fast recovery
Application response time
Erase of management
Fast troubleshooting
Four Fundamental
Availability
Security
Scalability
Manageability
3 layer
Distribution layer : interconnects smaller LANs
Core Layer : Connect Distribution layer device
Access Layer: provides connections for hosts and end devices
Three layer model
Server farm
Enterprise edge
Enterprise campus
Advantages
eases the design task
provides scalability
creates a deterministic network
enables the designer to add services and solution
Steps in network design project
Characterize the existing network
Design the network topology and solutions
Identify the network requirements
Explain what Factors Need to be Considered when Designing the Network Core Layer
network backbone
Goals of the core layer
Combining routing and switching in the same device
High-speed and aggregate links
Redundancy and load balancing
Quick convergence
Full mesh topology
Reducing human error
Partial mesh topology
Failure prevention
Explain which Factors Need to be Considered when Designing the Distribution Layer of a Network
Route summarization
Isolating Core Layer from Access Layer failures
Routing between VLANs
Filtering and managing traffic flow
Access control policies