1 / 17

Planning a Network Upgrade

Planning a Network Upgrade. Working at a Small-to-Medium Business or ISP – Chapter 3. Purpose of a Site Survey. Documents existing network structure Shows physical layout to determine if new equipment can be installed Will also help show . . . What is already on site

channing
Download Presentation

Planning a Network Upgrade

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

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

  2. Purpose of a Site Survey • Documents existing network structure • Shows physical layout to determine if new equipment can be installed • Will also help show . . . • What is already on site • What type of equipment may be needed • Floor plan of structure • Determine obvious issues • Unlabeled cables • Poor physical security • Lack of power • Lack of UPS

  3. Perform a Customer Site Survey • What does the technician look for . . . • Number of hosts or users • how many will be added over the next 12 months • how many network servers and/or printers are needed • Internet Service and Equipment • if upgrading speed, may need to upgrade equipment • Existing network devices • type of network equipment installed • configurations loaded on devices • Security • are additional firewalls needed • Applications • VoIP or video conferencing • Wireless or Wired • amount of square feet between access points

  4. Determine the Topologies • Physical topology • actual physical layout of devices • Logical topology • documents what paths are taken through the network • includes: • IP addresses • device names • workstations • routers • servers

  5. Perform a Customer Site Survey • Documentation on current hosts and devices • Includes: • device name • location • brand and/or model • operating system • IP addressing • connectivity method • security

  6. Coming up with a Game Plan • A good plan will help identify the following: • Strengths • Weaknesses • Opportunities • Threats • AKA SWOT

  7. Phases of the Network Upgrade • Requirements Gathering • analyze data from on-site visit to determine network requirements • done by the design team • creates Analysis Report • Selection and Design • selection of devices & cabling • weaknesses of design are identified and addressed here • creation of a prototype • Implementation • overlooked tasks are corrected • constant customer communication is CRITICAL • Operation • Review and Evaluation

  8. Examining the Physical Environment • Examine existing facilities and existing cabling • Find MDF (Main Distribution Facility) • houses network devices • all network cable concentrate here • may also contain POP of ISP • Any IDFs? (Intermediate Distribution Facility) • additional wiring closets • connect to MDF

  9. Cabling Considerations • Check cable types needed • STP • UTP • Coaxial • Fiber • Check cable specifications • Straight Through • Crossover • Rollover • Serial • TIA/EIA 568A/568B standard

  10. Check Out the Cabling • Patch Cable • from PC to wall plate • Horizontal cable • from wall plate to IDF • Vertical cable • from IDF to MDF • Backbone cable • handles major traffic • Wiring closet location • Cable management system • protects cables/cable runs • Cable labeling • Electrical

  11. Purchasing Equipment for the Network • Managed services • equipment obtained from ISP through a lease • all updates, maintenance, etc. of equipment are the responsibility of the ISP • In-house services • all responsibility falls on the customer

  12. Selection of Network Devices • Selection of LAN devices • hubs could be used with smaller LANs • switches more efficient • managed switch – control over individual ports • which is better? (one 24 port switch or 2-12 port switches) • Selection of a WAN device (router) • fixed or modular expansion? • fixed – specific number/type of ports • modular – includes expansion slots • breaks up collision and broadcast domains

  13. Cisco Devices • Router • 1841 ISR (Integrated Services Router) • used for medium-sized business • different connectivity options • Switch • 2960 switch • used for Fast Ethernet and Gigabit connectivity

  14. Network Reliability and Availability • Reliability • can be achieved by adding redundancy to the network • use of two routers instead of one • Five-9’s of availability • network operational 99.999% of time • Use of fault tolerance helps to ensure reliability • a network will continue operating properly in the event of a failure • Use of the following devices will help ensure fault tolerance • UPS • multiple power supplies • hot-swappable devices

  15. IP Addressing Plan • The following devices will need IP addresses • user PCs • servers • printers, IP phones • router LAN interfaces • router WAN (serial interfaces)

  16. 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.

More Related