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| − | |+ [[Network_design_methodology#PPDIOO|PPDIOO]] | + | |+ [[Network_design_methodology#PPDIOO|PPDIOO]] Network live-cycle phases (Prepare, Plan, Design, Implement, Operate og Optimize) |
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== Links == | == Links == | ||
Latest revision as of 11:09, 18 September 2016
Cisco Certified Design Associate
- Exam: 640-863
Strategic network design
Cisco Service-Oriented Network Architecure (SONA) describes a model for design of networks. Cisco updated their designmodel from Architecture for Voice, Video and Integrated Data(AVVID) to Intelligent Information Network (IIN).
There are three faces in the IIN design.
- Integrated transport: Voice, Video and Data are joined and transported together.
- Integrated services: For exampel Storage (SAN), voice
- Integrated Applications:
Reading plan
See fronter Network Semester 3
Materials
The Book
CCDA Official Exam Certification Guide
- ISBN: 978-1-58720-177-6
Part I - General Network Design
- Chapter 1: Network design methodology
- Chapter 2: Network Structure models
Part II - LAN and WAN design
- Chapter 3: Enterprise LAN design
- Chapter 4: Wireless LAN design
- Chapter 5: Technologies
- Chapter 6: WAN design
Part III - The Internet Protocol and Routing Protocols
- Chapter 7: Internet Protocol version 4
- Chapter 8: Internet Protocol version 6
- Chapter 9: Routing Protocol Selection Criteria
- Chapter 10: RIP and EIGRP Characteristics and Design
- Chapter 11: OSPF and IS-IS
- Chapter 12: Border Gateway Protocol, Route manipulation and IP Multicast
Part IV - Security, Convergence and Network Management
- Chapter 13: Security Management
- Chapter 14: Security Technologies and design
- Chapter 15: Traditional Voice Architectures and IP Telephony design
- Chapter 16: Network Management protocols
Part V - Comprehensive Scenarios
- Chapter 17: Comprehensive Scenarios
Summary
IIN
| IIN Phase | Description |
|---|---|
| Integrated Transport | Joining voice, data and video in a transport network |
| Integrated Service | Ingegrate common services such as storage, virtualization of network systems |
| Integrated Application | The Network knows the applications, server virtualization |
SONA Layer
| SONA lag | Description |
|---|---|
| Network Infrastructure layer | Contains enterprise servers, storage and clients |
| Interactive Service Layer | Optimizationof communication between applications and services by utilizing intelligent network services such as security, Voice, Virtualization og QoS |
| Application layer | Business applications (Programs) and collaboration tools (mail, voice ...) |
SONA Infrastruktur services
| SONA lag | Description |
|---|---|
| Identity Services | Including AAA, NAC og NBAR |
| Mobility Services | Access to network services regardless of physical location |
| Storage Services | Storage of critical data |
| Compute Services | Enhancing compute resources (Virtualization) |
| Security Services | Security of all resources |
| Voice and collaboration Services | Shared services and programs |
PPDIOO
| PPDIOO aktivitet | Description |
|---|---|
| Prepare | DThe Prepare phase establishes organization and business requirements, develops a network
strategy, and proposes a high-level architecture to support the strategy. Technologies that support the architecture are identified. This phase creates a business case to establish a financial justification for a network strategy. |
| Plan | The Plan phase identifies the network requirements by characterizing and assessing the network,
performing a gap analysis against best-practice architectures, and looking at the operational environment. A project plan is developed to manage the tasks, responsible parties, milestones, and resources to do the design and implementation. This project plan is followed during all phases of the cycle. |
| Design | The network design is developed based on the technical and business requirements obtained from
the previous phases. The network design provides high availability, reliability, security, scalability, and performance. The design includes network diagrams and an equipment list. The project plan is updated with more granular information for implementation. After the Design phase is approved, the Implement phase begins. |
| Implement | New equipment is installed and configured in the Implement phase. New devices replace or
augment the existing infrastructure. The project plan is followed during this phase. Planned network changes should be communicated in change control meetings, with necessary approvals to proceed. Each step in the implementation should includes a description, detailed implementation guidelines, estimated time to implement, rollback steps in case of a failure, and any additional reference information. As changes are implemented they are also tested before moving to the Operate phase. |
| Operate | The Operate phase maintains the network’s day-to-day operational health. Operations include
managing and monitoring network components, routing maintenance, managing upgrades, managing performance, and identifying and correcting network faults. This phase is the design’s final test. During operation, network management stations should monitor the network’s general health and generate traps when certain thresholds are reached. |
| Optimize | The Optimize phase involves proactive network management by identifying and resolving issues
before they affect the network. The Optimize phase may create a modified network design if too many network problems arise, to improve performance issues, or to resolve application issues. The requirement for a modified network design leads to the network life cycle beginning. |
Top-down or Bottom-up design
Top-down design
Incorporates the organization’s requirements. Provides the big picture. The design meets current and future requirements.
- Disadvantages:
- Time demanding
- Expensive short term.
Bottom-up design
The design is based on previous experience and allows for a quick solution.
- Disadvantages:
- May result in inappropriate design.
- Organizational requirements are not included.
Sections in a Design dokument
| Section | Description |
|---|---|
| Introduction | describes the project’s purpose and the reasons for the network design. |
| Design Requirements | lists the organization’s requirements, constraints, and goals. |
| Existing Network Infrastructure | includes logical (Layer 3) topology diagrams; physical topology diagrams; audit results; routing protocols; a summary of applications; a list of network routers, switches, and other devices; configurations; and a description of issues. |
| Design | contains the specific design information, such as logical and physical topology, IP
addressing, routing protocols, and security configurations. |
| Proof of Concept | results from live pilot or prototype testing. |
| Implementation plan | includes the detailed steps for the network staff to implement the new
installation and changes. |
| Appendixes | contains additional information and configurations. |
Optimization of communication between applications and services by using intelligent network services such as security, virtualization and Quality of Service (QoS)