About Me
Cisco Certified Design Professional (CCDP) - Enterprise
1 Enterprise Architecture and Design Principles
1-1 Enterprise Network Design Concepts
1-1 1 Network Design Life Cycle
1-1 2 Design Considerations for Enterprise Networks
1-1 3 Network Segmentation and Micro-Segmentation
1-1 4 Network Security Design Principles
1-1 5 Network Scalability and Performance
1-1 6 Network Resilience and Redundancy
1-1 7 Network Automation and Programmability
1-1 8 Network Virtualization and SDN
1-1 9 Network Management and Monitoring
1-1 10 Compliance and Regulatory Requirements
1-2 Enterprise Network Design Models
1-2 1 Hierarchical Network Design Model
1-2 2 Spine-Leaf Architecture
1-2 3 Modular Network Design
1-2 4 Centralized vs Distributed Network Design
1-2 5 Hybrid Network Design Models
1-3 Enterprise Network Design Tools and Methodologies
1-3 1 Network Design Documentation
1-3 2 Network Design Software Tools
1-3 3 Network Design Methodologies (e g , TOGAF, Zachman)
1-3 4 Network Design Best Practices
2 Enterprise Network Infrastructure Design
2-1 Campus Network Design
2-1 1 Campus Network Topologies
2-1 2 Campus Network Access Layer Design
2-1 3 Campus Network Distribution Layer Design
2-1 4 Campus Network Core Layer Design
2-1 5 Campus Network Wireless Design
2-1 6 Campus Network Security Design
2-1 7 Campus Network Management and Monitoring
2-2 Data Center Network Design
2-2 1 Data Center Network Topologies
2-2 2 Data Center Network Fabric Design
2-2 3 Data Center Network Redundancy and Resilience
2-2 4 Data Center Network Security Design
2-2 5 Data Center Network Virtualization
2-2 6 Data Center Network Automation
2-2 7 Data Center Network Management and Monitoring
2-3 WAN Design
2-3 1 WAN Topologies
2-3 2 WAN Connectivity Options (e g , MPLS, VPN, Internet)
2-3 3 WAN Optimization Techniques
2-3 4 WAN Security Design
2-3 5 WAN Management and Monitoring
2-4 Cloud and Hybrid Network Design
2-4 1 Cloud Network Design Principles
2-4 2 Hybrid Network Design
2-4 3 Cloud Connectivity Options
2-4 4 Cloud Network Security Design
2-4 5 Cloud Network Management and Monitoring
3 Enterprise Network Services Design
3-1 IP Addressing and Subnetting
3-1 1 IPv4 and IPv6 Addressing
3-1 2 Subnetting Techniques
3-1 3 IP Address Management (IPAM)
3-1 4 Addressing for Network Virtualization
3-2 Routing Protocols and Design
3-2 1 Interior Gateway Protocols (e g , OSPF, EIGRP)
3-2 2 Exterior Gateway Protocols (e g , BGP)
3-2 3 Routing Policy Design
3-2 4 Route Redistribution and Filtering
3-2 5 Routing for Network Virtualization
3-3 Switching and VLAN Design
3-3 1 Layer 2 Switching Protocols (e g , STP, VTP)
3-3 2 VLAN Design and Implementation
3-3 3 Trunking and Inter-VLAN Routing
3-3 4 Virtual Switching (e g , VSS, VPC)
3-3 5 Switching for Network Virtualization
3-4 Network Security Services Design
3-4 1 Firewall Design and Implementation
3-4 2 Intrusion Detection and Prevention Systems (IDSIPS)
3-4 3 Network Access Control (NAC)
3-4 4 VPN Design and Implementation
3-4 5 Secure Network Design Best Practices
3-5 Network Management and Monitoring Services Design
3-5 1 Network Management Protocols (e g , SNMP, NetFlow)
3-5 2 Network Monitoring Tools and Techniques
3-5 3 Network Performance Optimization
3-5 4 Network Troubleshooting and Diagnostics
3-5 5 Network Management for Virtualized Environments
4 Enterprise Network Implementation and Optimization
4-1 Network Implementation Planning
4-1 1 Implementation Project Management
4-1 2 Implementation Documentation
4-1 3 Implementation Best Practices
4-1 4 Implementation Testing and Validation
4-2 Network Optimization Techniques
4-2 1 Network Performance Tuning
4-2 2 Network Traffic Analysis and Optimization
4-2 3 Network Latency Reduction Techniques
4-2 4 Network Optimization for Virtualized Environments
4-3 Network Troubleshooting and Diagnostics
4-3 1 Troubleshooting Methodologies
4-3 2 Common Network Issues and Solutions
4-3 3 Network Diagnostics Tools and Techniques
4-3 4 Troubleshooting for Virtualized Networks
4-4 Network Compliance and Audit
4-4 1 Network Compliance Requirements
4-4 2 Network Audit Procedures
4-4 3 Network Compliance Best Practices
4-4 4 Network Compliance for Virtualized Environments
5 Enterprise Network Design Case Studies
5-1 Campus Network Design Case Study
5-1 1 Case Study Overview
5-1 2 Design Considerations
5-1 3 Implementation and Optimization
5-1 4 Lessons Learned
5-2 Data Center Network Design Case Study
5-2 1 Case Study Overview
5-2 2 Design Considerations
5-2 3 Implementation and Optimization
5-2 4 Lessons Learned
5-3 WAN Design Case Study
5-3 1 Case Study Overview
5-3 2 Design Considerations
5-3 3 Implementation and Optimization
5-3 4 Lessons Learned
5-4 Cloud and Hybrid Network Design Case Study
5-4 1 Case Study Overview
5-4 2 Design Considerations
5-4 3 Implementation and Optimization
5-4 4 Lessons Learned
2-3 WAN Design

2-3 WAN Design

Key Concepts

WAN Topologies

WAN Topologies refer to the physical or logical arrangement of network devices and connections across wide geographic areas. Common WAN topologies include Point-to-Point, Hub-and-Spoke, and Mesh topologies. Each topology has its advantages and is suited for different network requirements.

Example: A Point-to-Point topology connects two remote sites directly, providing a dedicated link. A Hub-and-Spoke topology centralizes traffic through a central hub, which is useful for centralized management and control.

WAN Technologies

WAN Technologies encompass the various methods and protocols used to transmit data over long distances. Key technologies include MPLS (Multiprotocol Label Switching), SD-WAN (Software-Defined WAN), and traditional technologies like Frame Relay and ATM.

Example: MPLS is a highly scalable technology that routes data based on labels, providing efficient and secure data transfer. SD-WAN uses software to manage and optimize WAN connections, offering flexibility and cost savings.

WAN Optimization

WAN Optimization techniques enhance the performance of WAN connections by reducing latency, improving bandwidth utilization, and minimizing data redundancy. Tools and technologies like WAN accelerators, compression, and caching are commonly used for optimization.

Example: A WAN accelerator can compress data before transmission, reducing the amount of data that needs to be sent over the WAN. Caching frequently accessed data at remote sites can reduce the need for repeated data transfers.

Security in WAN Design

Security in WAN Design involves protecting data as it travels across the network. This includes implementing encryption, firewalls, VPNs (Virtual Private Networks), and access control mechanisms to ensure data integrity and confidentiality.

Example: A VPN can create a secure tunnel over the public internet, ensuring that data transmitted between remote sites is encrypted and protected from unauthorized access. Firewalls can filter traffic to block malicious activities.

Scalability and Redundancy

Scalability in WAN Design refers to the ability to expand the network to accommodate more users, devices, and traffic. Redundancy involves creating backup systems or paths to ensure continuous operation in the event of a failure.

Example: A scalable WAN design might include multiple links and technologies to handle increased traffic. Redundant links ensure that if one link fails, traffic can be rerouted through an alternative path, maintaining network connectivity.

Examples and Analogies

Think of WAN Topologies as different road layouts connecting cities. A Point-to-Point topology is like a direct highway between two cities, while a Hub-and-Spoke topology is like a central airport with flights to multiple cities.

WAN Technologies are like different types of transportation vehicles. MPLS is like a high-speed train that efficiently routes passengers, while SD-WAN is like a flexible bus service that adapts to changing needs.

WAN Optimization is like improving traffic flow on a highway. Techniques like lane widening (compression) and rest stops (caching) make the journey faster and more efficient.

Security in WAN Design is like having security checkpoints and encrypted communication channels to protect travelers and their belongings from theft and harm.

Scalability and Redundancy are like building multiple highways and backup routes to handle increased traffic and ensure continuous travel even if one route is closed.

By understanding these key concepts, network professionals can design robust, secure, and scalable WANs that meet the needs of modern enterprises.

© 2024 Ahmed Baheeg Khorshid. All rights reserved.