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DESGN v2.1 - Designing for Cisco Internetwork Solutions


Designing for Cisco Internetwork Solutions (DESGN) v2.1 is an instructor-led course presented by Cisco Systems, Inc., training partners. This five-day course will enable learners to gather customer internetworking requirements, identify solutions, and design the network infrastructure and elements to ensure the basic functionality of the proposed solutions. The purpose of this course is to provide learners with the knowledge and skills to achieve associate-level competency in network design. The DESGN course is the first course in a design curriculum that supports the design certification track. The course focuses on the technology and methods currently available.


Upon completing this course, the student will be able to meet these overall objectives:

  • Discuss methodology in network design
  • Describe how to structure and modularize the network design using the Cisco Network Architectures for the Enterprise
  • Design the enterprise campus, and describe the architectural approach to the data center and virtualization market
  • Design the enterprise edge and remote modules as needed
  • Design a network addressing plan and select suitable routing protocols for a given network design
  • Evaluate security solutions for the network
  • Discuss voice and video networking considerations in the enterprise network design
  • Recommend a design for a basic wireless solution


The knowledge and skills that a learner must have before attending this course are as follows:

  • Cisco CCNA level of knowledge and Implementing Cisco IP Switched Networks (SWITCH) level of knowledge are strongly recommended for students attending the DESGN course.

Who Should Attend

The primary audience for this course is as follows:

  • Individuals seeking the Cisco CCDA certification
  • Individuals seeking the Cisco CCDP certification

The secondary audience for this course is as follows:

  • Presales and postsales network engineers who are involved in enterprise network design, planning, and implementation. (Postsales network engineers who are involved in the implementation will be involved in providing feedback to the presales network engineers and correct possible design flaws.)


  • Module 1: Network Design Methodology Overview

    Lesson 1: Understanding the Network Architectures for the Enterprise

        • Business Drivers for a New Network Framework
        • Cisco Network Architectures for the Enterprise

    Lesson 2: Identifying Design Requirements

        • Using the PPDIOO Approach for Networks
        • Using the PPDIOO Design Methodology
        • Identifying Customer Design Requirements
        • Identifying Network Applications and Network Services

    Lesson 3: Characterizing the Existing Network and Sites

        • Characterizing the Network and Sites
        • Identifying Major Features of the Network
        • Auditing the Existing Network
        • Using Tools for Auditing the Network
        • Analyzing Network Traffic and Applications
        • Using Tools for Analyzing Network Traffic
        • Analyzing Network Health

    Lesson 4: Using a Top-Down Approach to Network Design

      • Introducing the Top-Down Approach to Network Design
      • Using Decision Tables in Network Design
      • Assessing the Scope of the Network Design Project
      • Using Structured Design Principles
      • Planning an Implementation
      • Testing Your Design
      • Design Documentation
  • Module 2: Structuring and Modularizing the Network

    Lesson 1: Designing the Network Hierarchy

        • Introducing the Hierarchical Network Model
        • Describing Access Layer Functionality
        • Describing Distribution Layer Functionality
        • Describing Core Layer Functionality

    Lesson 2: Using a Modular Approach in Network Design

        • Describing Cisco Network Architectures for the Enterprise Modules
        • Describing Enterprise Campus Infrastructure Modules
        • Describing the Enterprise Edge Modules
        • Describing Remote Enterprise Modules

    Lesson 3: Supporting Services on Borderless Networks

        • Explaining the Role of Borderless Network Services
        • Security Infrastructure Services
        • Mobility Considerations
        • Application Performance Considerations
        • High-Availability Network Services

    Lesson 4: Identifying Network Management Protocols and Features

      • Network Management Overview
      • SNMP Characteristics
      • Management Information Base (MIB) Characteristics
      • Using RMON
      • NetFlow Characteristics
      • Cisco Discovery Protocol Features
      • Syslog Features
  • Module 3: Designing Basic Campus and Data Center Networks

    Lesson 1: Describing Campus Design Considerations

        • Campus Design Factors
        • Environmental Characteristics and Considerations
        • Infrastructure Device Characteristics and Consideration

    Lesson 2: Designing the Campus Infrastructure Module

        • Design Considerations for the Campus Network
        • Design Considerations for the Building Access Layer
        • Design Considerations for the Building Distribution Layer
        • Design Considerations for the Campus Core Layer

    Lesson 3: Describing Enterprise Data Center Considerations

        • Describing the Enterprise Data Center Architectures
        • Enterprise Data Center Infrastructure

    Lesson 4: Describing Enterprise Network Virtualization Tools

      • Virtualization Overview
      • Virtualization Technologies
      • Network Virtualization Design Considerations
  • Module 4: Designing Remote Connectivity

    Lesson 1: Identifying WAN Technology Considerations

        • Review of WAN Features
        • Comparison of WAN Transport Technologies
        • WAN Design Requirements

    Lesson 2: Designing the Enterprise WAN

        • Traditional WAN Designs
        • Remote-Access Network Design
        • VPN Design
        • Enterprise vs. Service Provider Managed VPN
        • Enterprise Managed VPN: IPsec
        • IPsec Direct Encapsulation
        • Cisco Easy VPN
        • Service Provider Managed VPN: Metro Ethernet
        • VPLS Design
        • MPLS Design
        • MPLS Layer 3 VPN Design
        • WAN Backup Strategy Design
        • Selecting the Enterprise WAN Architecture
        • Selecting Enterprise WAN Components

    Lesson 3: Designing the Enterprise Branch

      • Enterprise Branch Architecture
      • Enterprise Branch Design
      • Enterprise Teleworker (Cisco Virtual Office Solution) Design
  • Module 5: Designing IP Addressing and Selecting Routing Protocols

    Lesson 1: Designing IPv4 Addressing

        • IPv4 Addressing
        • Developing an Addressing Plan

    Lesson 2: Designing IPv6 Addressing

        • IPv6 Addressing
        • IPv6 Address Assignment Strategies
        • Strategies for IPv6 Deployment

    Lesson 3: Reviewing Enterprise Routing Protocols

        • Reviewing Routing Protocol Fundamentals
        • Routing Protocols for the Enterprise

    Lesson 4: Designing a Routing Protocol Deployment

      • Applying Routing Protocols to a Hierarchical Network Structure
      • IPv6 Route Summarization
  • Module 6: Evaluating Security Solutions for the Network

    Lesson 1: Defining Network Security

        • Network Security Background
        • Understanding Network Security Policy and Processes

    Lesson 2: Understanding the Cisco SAFE Approach

        • Cisco SAFE Architecture
        • Trust and Identity Management
        • Threat Defense
        • Secure Connectivity
        • Maintaining Data Integrity
        • Security Management

    Lesson 3: Selecting Network Security Solutions

      • Security Integration in Network Devices
      • Securing the Enterprise Network
  • Module 7: Identifying Voice and Video Networking Considerations

    Lesson 1: Integrating Voice and Video Architectures

        • Differentiating Between Analog and Digital Signaling
        • Introducing Voice and Video over IP
        • Voice and Video Standards
        • Introducing VoIP
        • Introducing Video Considerations
        • Call Control and Transport Protocols

    Lesson 2: Identifying the Requirements of Voice and Video Technologies

      • Minimizing Delay, Jitter, and Loss
      • Preventing Echo
      • Voice Coding and Compression
      • Bandwidth Considerations
      • Using QoS for Voice and Video
      • Voice Traffic Engineering Overview
  • Module 8: Identifying Design Considerations for Basic Wireless Networking

    Lesson 1: Cisco Unified Wireless Network Review

        • Cisco Unified Wireless Network Architecture
        • Wireless Infrastructure
        • Overview of WLAN Controllers
        • Access Point Support and Scaling

    Lesson 2: Wireless Network Controller Technology

        • Lightweight Access Point Connectivity to a WLC
        • Lightweight Access Point Operations
        • Mobility in the Cisco Unified Wireless Network
        • Controller Redundancy Design
        • Radio Resource Management and RF Groups

    Lesson 3: Designing Wireless Networks Using Controllers

      • RF Site Survey
      • Design Considerations for Campus Wireless Networks
      • Design Considerations for Branch Wireless Networks
      • Design Considerations for Guest Services in Wireless Networks
      • Design Considerations for Outdoor Wireless Networks