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
5-3 WAN Design Case Study

5-3 WAN Design Case Study

Key Concepts

WAN Topologies

WAN Topologies refer to the physical or logical layout of the Wide Area Network. Common topologies include Point-to-Point, Hub-and-Spoke, and Mesh. Each topology has its advantages and is suited for different scenarios.

Example: A Point-to-Point topology might be used for connecting two remote offices directly. A Hub-and-Spoke topology, where a central hub connects multiple spokes (branch offices), is often used for centralized management and resource sharing.

Analogies: Think of WAN topologies as different road layouts. A Point-to-Point topology is like a direct highway between two cities. A Hub-and-Spoke topology is like a central airport with multiple connecting flights to smaller towns.

Redundancy and Failover

Redundancy and Failover are critical for ensuring high availability in WANs. Redundancy involves having backup paths or components to maintain connectivity in case of a failure. Failover mechanisms automatically switch to these backup paths when the primary path fails.

Example: A company might use dual ISPs (Internet Service Providers) to ensure continuous internet connectivity. If one ISP fails, the network can automatically switch to the other ISP without interruption.

Analogies: Redundancy and Failover are like having multiple power lines to a house. If one line goes down, the house can still receive power through the backup line.

Bandwidth Management

Bandwidth Management involves optimizing the use of available bandwidth to ensure efficient data transfer and minimize latency. This includes techniques like Quality of Service (QoS) to prioritize critical traffic and traffic shaping to control data flow.

Example: A WAN might implement QoS to prioritize VoIP traffic over file transfers. Traffic shaping can be used to limit the bandwidth allocated to non-critical applications, ensuring that critical applications have sufficient bandwidth.

Analogies: Bandwidth Management is like managing lanes on a highway. QoS is like designating certain lanes for emergency vehicles, while traffic shaping is like controlling the speed of cars to avoid congestion.

Security Considerations

Security in WAN design involves protecting the network from unauthorized access, data breaches, and other threats. This includes implementing firewalls, VPNs (Virtual Private Networks), and encryption to secure data in transit.

Example: A company might use VPNs to create secure connections between remote offices and the central data center. Firewalls can be deployed at the perimeter to filter incoming and outgoing traffic, and encryption can be used to protect sensitive data.

Analogies: Security considerations are like fortifying a castle. Firewalls are like walls and gates, VPNs are like secret tunnels, and encryption is like encoding messages to ensure they can't be intercepted.

Scalability and Flexibility

Scalability and Flexibility in WAN design allow the network to grow and adapt to changing requirements. This includes using modular hardware and software solutions that can be easily expanded or reconfigured.

Example: A WAN might use modular routers and switches that can be upgraded with additional modules as the network grows. Software-defined WAN (SD-WAN) solutions provide flexibility by allowing network configurations to be managed centrally and dynamically adjusted.

Analogies: Scalability and Flexibility are like designing a house with room for future expansions and flexible rooms that can be easily reconfigured to meet changing needs.

By understanding these key concepts, network professionals can design robust, secure, and efficient WANs that meet the demands of modern enterprise environments.

© 2024 Ahmed Baheeg Khorshid. All rights reserved.