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DESIGNING AND SUPPORTING COMPUTER NETWORKS - Coggle Diagram
DESIGNING AND SUPPORTING COMPUTER NETWORKS
Network Requirements:
ease of management
fast recovery
application response time
fast troubleshooting
4 fundamental network design goals :
scability
availability
security
manageability
3 layer model into modular areas :
Enterprise campus
Server farm
Entrerprise edge
Advantages of Modular Framework
1) it creates a deterministic network with clearly defined boundaries
2) it eases the design task
3) it provides scalability by allowing enterprises to add modules easily
4) it enables the designer to add services and solution without changing the underlying network design
Steps in network design project :
identify the network requirements
chracterize the existing network
design the network topology and solutions
Factors for designing the Network Core Layer
combining routing and switching in the same device
Redundancy and load balancing
High-speed and aggregate links
Quick convergence
Full mesh topology
Partial mesh topology
Failure prevention
Reducing human error
Factors for designing the Distribution Layer of a network
Filtering and managing traffic flow
Access control policies
Route summarization
Isolating Core Layer from Access Layer failures
Routing between VLANs
Factors for designing the Access Layer of a network
Physical location of equipment
Wiring closets
Converged networking
Availability
Naming structures
VLAN architecture
Traffic patterns
Prioritization strategies
Benefits and Security Implications of creating Server Farms
Defined entry and exit points for network traffic
Redundant, high-capacity links
Load balancing and faliover
Lower cost of providing services