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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:
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 Lag
| 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 | Hvilke forretningskrav har virksomheden. Identificer teknologier (voice etc) som skal anvendes, og udarbejd en netværksstrategi. |
| Plan | Identificer netværkskravene ved at sammenligne det fysiske netværk med forretningskravene fra Preparefasen. Udarbejd en projekt plan. |
| Design | Design netværket ud fra resultater fra Prepare og Plan faserne. Nøgleord: High Availability, Security, Scalability og Performance. |
| Implement | Installer og konfigurer det nye udstyr. |
| Operate | Daglig netværksdrift. |
| Optimize | Proaktivt Network Management. Modificer design løbende. |
Top-down eller Bottom-up design
Top-down design
Tager hensyn til virksomhedens behov og giver stort overblik. Designet tilpasses nuværende og fremtidige behov.
- Ulemper:
- Tidskrævende
- Dyrere nu-og-her.
Bottom-up design
Designet er baseret på erfaringer fra netværket og giver en hurtig løsning på behovet nu og her.
- Ulemper:
- Uhensigtsmæssigt design, tab af overblik.
- Virksomhedens fremtidige behov dækkes ikke.
Sektioner i et Design dokument
| Sektion | Description |
|---|---|
| Introduktion | Formål og mål for netværks designet |
| Design krav | Virksomhedens krav og begrænsninger til netværket. |
| Nuværende netværk | Netværkstegninger, hard- og softwareversioner og eksisterende konfigurationer. |
| Design | Ny logisk topologi, design og IP adresseplaner |
| Proof of Concept | Resultater fra et pilotprojekt/FAT (Field Acceptence Test) |
| Implementations plan | Detaljeret beskrivelse af installationsfasen. |
| Bilag | Support information til virksomheden. |
Optimering af kommunikationen mellem applikationer og services ved at anvende intelligente netværks services som for eksempel sikkerhed, virtualisering og QoS