Network Design

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Network Design
How To !!!
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Network Design( Scheme of Presentation)

• Introduction, Documentation
  
• Wiring Closet Specifications,Media and Related
  issues, Identifying Potential Wiring Closets
  Horizontal and Backbone
  Cabling,Grounding, wiring Plans Network Power
  Supply Issues

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Beginning Step( Analysis)

• To gather information about the
  organization. organization's history and current
  status
• To make a detailed analysis and assessment of
  the current and projected requirements of those
  people who will be using the network.
• .To identify the resources and constraints of the
  organization.

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Problem Matrix

• The methods used to organize the ideas and plans
  when doing a design is to use the problem-solving
  matrix. This matrix lists alternatives and
  various choices, or options, from which you can
  choose.
• Engineering Design Cycle

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Documentation in network design

• logical topology physical topology
• cut sheets problem-solving matrices
• labeled outlets Labled cable runs
• summary of outlets and cable runs
• summary of devices, MAC addresses, and IP
  addresses

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Beginning of the Design
Presented by Shams Ayub
Network Design
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Network Design

• Selection of Technologies, such as
• Token Ring,
• FDDI,
• Ethernet.
• Our focus is on the Ethernet Technology.

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Layer 1 Issues

• Ethernet is a Logical Bus Topology,
• Which has Collision Domains
• Using the process called Segmentation.
• Segmentation helps keeping the Collision Domains
  small.
• Subnetting and Routers do Segmentation.

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Layer 1 Issues

• Media / Cable selection - CAT 5 UTP as the
  medium.
• Physical Topology Star / Extended Star topology
  as the physical (wiring) topology.
• Types of Ethernet topologies10BASE-T and
  100BASE-TX (Fast Ethernet - expensive).
• (NOTE If you have the resources, you might run
  100BASE-TX throughout the network. If not, you
  might use Fast Ethernet to connect the main
  distribution facility (central control point of
  our network) to other intermediate distribution
  facilities).

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Layer 1 Issues

• Use (if the pocket allows ?)
• hubs,
• repeaters,
• transceivers
• plugs, cable, jacks, and patch panels.
• To finish Layer 1 design, you must generate both
  a logical and a physical topology.
• Note As always, an important part of your design
  involves documenting your work.

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Layer 2 Issues

• Develop a Layer 2 LAN Topology, meaning, to add
  Layer 2 devices to your topology to improve its
  capabilities.
• You could add switches to reduce congestion and
  collision domain size.
• Plan for future expansion more intelligent Layer
  2 devices

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Layer 3 Issues

• Develop a Layer 3 topology i.e add Layer 3
  devices that will add to the topology's
  capabilities.
• Layer 3 is where routing is implemented. You
  could use Routers to build scalable internetworks
  such as LANs, WANs, or networks of networks.
• Routers imposes Logical Structure on the network
  you designing. They can also be used for
  segmentation.
• Routers, unlike bridges, switches, and hubs,
  break up both collision and broadcast domains.

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Documentation!!!

• As much as one hates it ??
• NO Documentation means INCOMPLETE DESIGN!!
• So document your network design's Physical and
  logical topologies.
• Documentation should include any brainstormed
  ideas, problem-solving matrices, and any other
  notes one makes while making ones determinations.

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Beginning of the Design
Presented by Ahmed Al-Naamany
Network Design
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Beginning of the Design

• Know the Specific requirements of the networks
• Develop logical topology
• physical topology
• cut sheets
• label outlets
• label cable runs
• summary of outlets and cable runs
• summary of devices and IP addresses

Budget!!
Network Design
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Beginning of the Design
Identifying The MDF and IDF locations Taking in
consideration the load balancing and future
expansions of the network
Network Design
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Wiring Closets Specs!

• Tiled Floors or Shinning
• Exit door should be open able from inside
• There should be one closet per floor and if the
  area is more than 1000 M2 additional one should
  be added
• Equipment Mounting should be based on a 1.9 cm
  plywood that is raised at least by 4.4. cm from
  the underlaying wall.
• Safety measures should include Fire inhibition
  I.e. all conduit openings should be covered to
  stop fire and Smoke

Network Design
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Beginning of the Design
The 100 meters rule!!!
Network Design
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Designing around the interference!!

• Interference Devices
• florescent lights
• heaters .radios
• air cleaners .televisions
• computers
• motion sensors
• radar .motors
• switches .welders
• auto ignitions
• etc

Network Design
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Work Flowcharts Time lines

• installing outlets
• installing jacks
• running cables
• punching cables into patch panels
• testing cables
• documenting cables
• installing hubs, switches, bridges, and routers
• configuring routers
• installing and configuring PCs NICS

Network Design
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Server and Main Distribution Facility

• UPS provision
• near the POP
• Proper Grounding to a common of all Network
  equipment
• Provision for future expansions

Network Design
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That is a quick brief of Network Design
Last word of caution!!! Make absolute sure that
there is no rain water, high humidity and or
dust build-up near the network installations
Network Design