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CIS512 Network Design

CIS512 Network Design. CIS512 Spring 2005 Kutztown University Prof. Frye. David Hooley Jin Yuan Warren Chester. Network Design Decisions:. Convergence – a single infrastructure for Data Voice Video Is the technology mature and reliable enough? Yes – Some examples

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CIS512 Network Design

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  1. CIS512 Network Design CIS512 Spring 2005 Kutztown University Prof. Frye David Hooley Jin Yuan Warren Chester

  2. Network Design Decisions: • Convergence – a single infrastructure for • Data • Voice • Video • Is the technology mature and reliable enough? • Yes – Some examples • EMM Office – VOIP for > 2 years • Dartmouth – WVOIP • Northwestern – Video over IP

  3. Implications of Convergence • Demand for high network bandwidth • Cat6 handles Gigabit on copper • High bandwidth switches • High bandwidth backbone • High reliability & uptime requirements • Data technology has improved • Employ redundancy • Technology interfaces needed • Voice & video gateways available

  4. Benefits of Convergence • Need to support only one technology • Less expensive • Less training of staff required • Fewer vendors need be involved • Better integration of applications • High rate of innovation in converged technology • New models will be less expensive in the future with more capacity & features • New applications & technologies will be available

  5. Net Design Decisions • Install Cat6 cabling – Copper 1Gigabit capable • 2-3 times the number of drops on building plans • No fiber (expensive, NICs expensive, cu is capable) • one coax drop to classrooms (video servers expensive) • Install Gigabit switches, high bandwidth backbone • Use fiber between main & individual network rooms • Install Voice over IP gateway, use IP Phones • Phone changes are done via a web page rather than wiring changes • Install Video Servers • Allow TV viewing over IP, use PCs & video projectors

  6. Wireless Net Design Decisions • Install one Wireless Access Point (AP) per Equip. Room to cover hallways and common areas near by. • Install three APs in the big auditorium. Note the 312 wired connections available. Midlevel APs often support 100 users. Users unsatisfied with their bandwidth (wireless APs are shared devices) can use a dedicated wired connection. • APs use the Virtual LAN features of the switches to route all AP traffic through the wireless authentication (like Blue Socket ) before entering the network.

  7. External Connections • Internet Service • T1 is probably insufficient bandwidth but T3 is about what all of KU uses now • Three T1s would probably be adequate • Expect a lot of traffic to main campus • Possible to use this for VOIP to main campus • Telephone Service • T1 service to local provider (24 voice lines) • Probably a fiber connection to provider

  8. Scaled Partial Diagram of the Network Typical Wall Box: 2 RJ11s populated, 2 blank Fiber between Equipment Rooms Individual Network Equipment Room ( 2 per floor) Layer 2 switches Patch Panels Routers Alarm & Monitors Firewall UPS Fiber To Telephone Service Provider Layer 3 Switches 1 Cat6 LDAP server W2k & storage Cable bundle to wall boxes: 4 Cat6 & 1 Coax to each classroom VOIP Gateway Fiber To Internet Service Provider Video Server Security Equipment Alarm & Monitors Wall Box installed above drop ceiling in hallways for Wireless Access Point UPS & HVAC Typical Wall Box: 2 RJ11s populated, 1 blank, Coax Conn. Wireless Access Point in hall ceilings Main Network Equipment Room Rm 007

  9. Network Equipment Room Master Diagram 4th Floor Rm 430 3rd Floor Rm 328 3rd Floor Rm 303 2nd Floor Rm 267 2nd Floor Rm 265 Big Aud. 312 ports 3 Wireless AP 1st Floor Rm 168 1st Floor Rm 166 Main Network Equipment Room To Telephone Service Provider Basement Rm 007 To Data Service Provider (Internet)

  10. Individual Network Equipment Room Rack Diagram Fiber Cable Management Fiber Cable Management 19” Standard Equipment Rack – Open frame Drop cable terminations Expandable Layer 2 switch modules 48 ports / module 48 ports / module Empty space for easier cable management – install wire mgmt panels Alarm & Monitor System UPS & Power Management

  11. Main Network Equipment Room Detailed Diagram Overhead cable trays for inter-rack cable management Internal Fiber & Cable Management LDAP Server Incoming Fiber & Cable Management VOIP Gateway General Server, W2k Call Management System Two Layer 3 switches for redundant links to Individual Equipment Rooms RAID Storage Server, disks Main router for Internet Video Servers (optional) Firewall Packet Shaper – Bandwidth Mgmt Network Monitoring & Alarm Equipment Wireless Authentication – Blue Socket

  12. New Building Network Infrastructure Recommendation • A state-of-the-art network infrastructure • Provides necessary services – Data, Voice, Video • Can accommodate new services • Lower future operational and maintenance costs • Initial equipment costs – about $280,000 • Additional end user equipment needed • IP Telephones • Personal Computers – Office, Classrooms, Labs • Initial equipment costs – about $250,000

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