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NETWORK DESIGN - Coggle Diagram
NETWORK DESIGN
NETWORK REQUIREMENTS
- Most businesses have a few requirements for their network.
- Stay up all the time.
- Should reliably deliver applications and provide reasonable response times.
- Should be secure.
- Should be easy to modify to adapt to network growth and general business changes.
- Troubleshooting should be easy. Finding and fixing a problem should not be too
time-consuming.
- Simply said:
- Ease of management.
- Fast Recovery.
- Application Response Time.
- Fast troubleshooting.
NETWORK DESIGN GOAL
Scalability:
- Network can grow to include new user group.
Availability:
- network can delivers consistent, reliable performance, 24 hours a day,
7 days a week.
Security:
- Security is a feature that must be designed into the network.
Manageability:
- The available network staff must be able to manage and support the network
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Methodology
- Three Distinct
- Step 1. Identify the network requirements
- Step 2. Characterize the Existing Network
- Step 3. Design the Network Topology And Solutions
STEP 1
- Network designer and customers/client, document the goals
of the project .
- Business goals: Focus on how the
network can make the business more
successful.
- Technical requirements: Focus on
how the technology is implemented
within the network.
STEP 2
- Information about the current network and
services is gathered and analysed.
- Compare the functionality of the existing
network with the defined goals of the new
project.
- The designer determines whether any existing
equipment, infrastructure, and protocols can
be reused, and what new equipment and
protocols are needed to complete the design.
STEP 3
- A common strategy for network
design is to take a top-down
approach.
- When the design is complete, a
prototype or proof-of-concept test is
performed.
- This approach ensures that the new
design functions as expected before it
is implemented.
Cisco Lifecycle Services
- Designed to support evolving networks.
- A six-phase approach (PPDIOO).
- Each phase includes the activities required to successfully deploy and operate Cisco technologies.
- It specifies how to maximise performance throughout the lifecycle of a network.
- SIX phases – Prepare, Plan, Design, Implement, Operate & Optimise.
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