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DFN50133 NETWORK DESIGN : CHAPTER 1 DESIGNING AND SUPPORTING COMPUTER…
DFN50133 NETWORK DESIGN : CHAPTER 1 DESIGNING AND SUPPORTING COMPUTER NETWORKS
How Hierarchical Network Design Creates Stable, Reliable, Scalable Network
4 Network requirements
(2) Fast recovery
(1) Ease management
(3) App response
(4) Fast troubleshooting
4 Fundamental network design goals
(1) Scalability
(2) Availability
(3) Security
(4) Manageability
What is Core Layer?
connects
Distribution Layer
devices
Define Distribution Layer?
interconnects
smaller
LANs
Describe Access Layer?
provides
connection
hosts
end devices
Subdividing
Modular Framework
Advantages
(1) Creates
deterministic
network
clearly
defined
modules
(3) Provides
scalability
allowing
enterprises
add
modules
easily
(2) Eases
design
task
making
module
independent
(4) Enables
designer
add
services
solution
changing
underlying
network
design
Network design projects
3 Steps
(1) Identify
network
requirements
(2) Characterize
existing
network
(3) Design
network topology
solutions
three-layer model modular areas
(3) Enterprise edge
(1) Enterprise campus
(2) Server farm