Planning a Network Upgrade Working at a SmalltoMedium

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Planning a Network Upgrade Working at a Small-to-Medium Business or ISP – Chapter 3

Planning a Network Upgrade Working at a Small-to-Medium Business or ISP – Chapter 3 Version 4. 1 © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 1

Objectives § Perform a customer site survey. § Describe the importance of planning when

Objectives § Perform a customer site survey. § Describe the importance of planning when beginning a network upgrade. § Describe physical topology considerations when upgrading a network. § Describe structured cabling. § Describe network configuration and interaction of network devices. § Describe other considerations when planning an upgrade. © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 2

Documenting the Existing Network § Perform a site survey. § Investigate and document the

Documenting the Existing Network § Perform a site survey. § Investigate and document the physical layout of the premises. © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 3

Documenting the Existing Network § Current information gathered during a site survey: – Number

Documenting the Existing Network § Current information gathered during a site survey: – Number of users and types of equipment – Current Internet connectivity – Application requirements – Existing infrastructure – Physical layout © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 4

Documenting the Existing Network § Planning information gathered during a site survey: – Projected

Documenting the Existing Network § Planning information gathered during a site survey: – Projected growth – New services required – Security and privacy requirements – Reliability and uptime expected – Budget constraints © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 5

Documenting the Existing Network § Physical topologies – Wired – Wireless § Logical topologies

Documenting the Existing Network § Physical topologies – Wired – Wireless § Logical topologies © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 6

Documenting the Existing Network § Understand the relationship between the devices and the network,

Documenting the Existing Network § Understand the relationship between the devices and the network, regardless of the physical cabling layout © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 7

Documenting the Existing Network § Record information about the current network on a brief

Documenting the Existing Network § Record information about the current network on a brief inventory sheet. © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 8

Planning the Network Upgrade § Requirements Gathering § Selection and Design § Implementation §

Planning the Network Upgrade § Requirements Gathering § Selection and Design § Implementation § Operation § Review and Evaluation © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 9

Planning the Network Upgrade § Physical environment § Wiring closets: MDF, IDF © 2007

Planning the Network Upgrade § Physical environment § Wiring closets: MDF, IDF © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 10

Planning the Network Upgrade § Cabling considerations: – User work areas – Telecommunications room

Planning the Network Upgrade § Cabling considerations: – User work areas – Telecommunications room – Backbone area – Distribution area © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 11

Planning the Network Upgrade § Structured cabling § Cabling choices: STP, UTP, coaxial, fiber

Planning the Network Upgrade § Structured cabling § Cabling choices: STP, UTP, coaxial, fiber optic § Patch cables § Horizontal cabling § Vertical cabling § Backbone cabling § Cable management § Cable labeling © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 12

Planning the Network Upgrade § Straight-through cables § Crossover cables § Console (rollover) cables

Planning the Network Upgrade § Straight-through cables § Crossover cables § Console (rollover) cables § Serial cables © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 13

Purchasing and Maintaining Equipment § Managed Service § In-House © 2007 Cisco Systems, Inc.

Purchasing and Maintaining Equipment § Managed Service § In-House © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 14

Purchasing and Maintaining Equipment § LAN switches provide connectivity within the local area networks.

Purchasing and Maintaining Equipment § LAN switches provide connectivity within the local area networks. © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 15

Purchasing and Maintaining Equipment § Routers interconnect local networks and are needed in a

Purchasing and Maintaining Equipment § Routers interconnect local networks and are needed in a WAN environment. © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 16

Purchasing and Maintaining Equipment § ISRs combine the functions of switches, routers, access points,

Purchasing and Maintaining Equipment § ISRs combine the functions of switches, routers, access points, and firewalls into the same device. © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 17

Purchasing and Maintaining Equipment Factors for choosing a router: § Type of connectivity §

Purchasing and Maintaining Equipment Factors for choosing a router: § Type of connectivity § Features available § Cost © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 18

Purchasing and Maintaining Equipment § Design considerations: – Reliability – Availability – “ 5

Purchasing and Maintaining Equipment § Design considerations: – Reliability – Availability – “ 5 9 s of uptime” – Fault tolerance © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 19

Purchasing and Maintaining Equipment § IP addressing plan: – IP address scheme – Network

Purchasing and Maintaining Equipment § IP addressing plan: – IP address scheme – Network information © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 20

Summary § A site survey including extensive documentation of both physical and logical network

Summary § A site survey including extensive documentation of both physical and logical network information must be performed before a network upgrade can be planned. § The five phases of a network upgrade include requirements gathering, selection and design, implementation, operation, and review and evaluation. § Structured cabling deals with the placement of cables, location of wiring closets, cable management, and electrical considerations. § Cost and expandability are important considerations when planning equipment upgrades. © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 21

© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 22

© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 22