About Me
Cisco Certified Design Expert (CCDE)
1 Network Design Fundamentals
1-1 Network Design Principles
1-2 Network Design Lifecycle
1-3 Network Design Methodologies
1-4 Network Design Best Practices
2 Enterprise Architecture and Design
2-1 Enterprise Network Architecture
2-2 Network Segmentation and Micro-Segmentation
2-3 Network Virtualization
2-4 Software-Defined Networking (SDN)
2-5 Network Function Virtualization (NFV)
3 Network Infrastructure Design
3-1 Physical Network Design
3-2 Logical Network Design
3-3 Network Addressing and Naming
3-4 Network Topology Design
3-5 Network Redundancy and Resilience
4 Network Services Design
4-1 Routing and Switching Design
4-2 Wireless Network Design
4-3 Network Security Design
4-4 Network Management and Monitoring
4-5 Quality of Service (QoS) Design
4-6 Network Automation and Orchestration
5 Data Center Design
5-1 Data Center Architecture
5-2 Data Center Network Design
5-3 Storage Area Network (SAN) Design
5-4 Data Center Security
5-5 Data Center Virtualization
5-6 Data Center Automation
6 Cloud and Hybrid Network Design
6-1 Cloud Network Architecture
6-2 Hybrid Network Design
6-3 Cloud Security Design
6-4 Cloud Automation and Orchestration
6-5 Multi-Cloud and Hybrid Cloud Strategies
7 Network Design Implementation and Optimization
7-1 Network Design Implementation
7-2 Network Optimization Techniques
7-3 Network Performance Tuning
7-4 Network Troubleshooting and Diagnostics
7-5 Network Design Documentation
8 Network Design Governance and Compliance
8-1 Network Design Governance
8-2 Regulatory and Compliance Requirements
8-3 Network Design Auditing
8-4 Network Design Change Management
8-5 Network Design Risk Management
9 Emerging Technologies and Trends
9-1 Internet of Things (IoT) Network Design
9-2 5G Network Design
9-3 Artificial Intelligence (AI) in Network Design
9-4 Blockchain in Network Design
9-5 Edge Computing Network Design
Network Design Fundamentals

Network Design Fundamentals

1. Network Topology

Network topology refers to the arrangement of various elements (links, nodes, etc.) in a network. The topology can be physical, showing the actual layout of cables and devices, or logical, indicating how data flows in the network.

Example: A star topology connects all devices to a central hub. If one device fails, it does not affect the others, but if the hub fails, the entire network is compromised.

2. Network Segmentation

Network segmentation involves dividing a network into smaller, more manageable segments. This improves performance, security, and fault isolation.

Example: In a large enterprise, the network can be segmented into departments (e.g., HR, IT, Sales) using VLANs. This ensures that traffic within a department is isolated from others, enhancing security and performance.

3. Scalability

Scalability is the ability of a network to grow and manage increased traffic and devices without a significant drop in performance. A scalable network design considers future growth and technological advancements.

Example: A network designed with modular switches and routers allows for easy addition of new devices and expansion of the network without requiring a complete overhaul.

4. Redundancy

Redundancy in network design involves creating backup paths and systems to ensure continuous operation in case of failure. This minimizes downtime and improves reliability.

Example: Implementing redundant power supplies in network devices ensures that if one fails, the other can take over, preventing network outages.

5. Quality of Service (QoS)

Quality of Service (QoS) refers to the ability to manage network traffic to ensure the performance of critical applications. QoS policies prioritize certain types of traffic over others.

Example: In a VoIP network, QoS can prioritize voice packets over data packets, ensuring clear and uninterrupted voice communication.

© 2024 Ahmed Baheeg Khorshid. All rights reserved.