• Like
LAN and WAN Design: Putting it All Together
Upcoming SlideShare
Loading in...5
×

Thanks for flagging this SlideShare!

Oops! An error has occurred.

LAN and WAN Design: Putting it All Together

  • 3,083 views
Published

 

  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
No Downloads

Views

Total Views
3,083
On SlideShare
0
From Embeds
0
Number of Embeds
0

Actions

Shares
Downloads
103
Comments
1
Likes
1

Embeds 0

No embeds

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
    No notes for slide

Transcript

  • 1. LAN and WAN Design: Putting It All Together Chapter 11
  • 2. Learning Objectives
    • Discuss general LAN and WAN design issues that include using structured wiring and structured networking
    • Describe and implement LAN design principles
    • Explain and implement WAN design principles
  • 3. General LAN and WAN Design Issues
    • Factors that affect design
    • Analyzing existing topology and resources
    • Network management
    • Cable installation and replacement
    • Structured wiring
    • Vertical wiring and structured networking
    • Full-duplex communications
    • Bridge, router, and hub design issues
  • 4. Factors That Affect a LAN or WAN Design
    • Anticipated network traffic
    • Redundancy requirements
    • User movement
    • Accommodating for future growth
    • Security considerations
    • WAN connectivity
    • LAN and WAN costs
  • 5. Designing for Redundancy
  • 6. Analyzing Existing Topology and Resources
    • Inspect cable plant
    • Compile bandwidth utilization baseline data
    • Audit resources
    • Review traffic
    • Perform network capacity management
  • 7. Network Management
    • Directly related to network design and topology; some topologies are easier to manage than others
  • 8. Cable Installation and Replacement
  • 9. Limitations of Thinnet/Thicknet Cable Plants
    • Cannot meet high bandwidth requirements
    • Expensive to maintain and troubleshoot
    • Difficult to expand
  • 10. Cable Replacement Factors
    • Replacement of legacy cable
    • Cable and connector costs
    • Installation costs
    • Environmental requirements
    • Extra cable requirements
    • Creation or redesign of wiring closet locations
  • 11. Guidelines for Installing Cable
    • Use structured wiring and structured networking principles
    • Meet or exceed maximum bandwidth required
    • Install Category 5 or better UTP cable horizontally to desktop
    • Install multimode fiber-optic riser cable between floors
    • Follow IEEE specs for cable run distances
      • Single-mode fiber-optic cable for long runs
    continued…
  • 12. Guidelines for Installing Cable
    • Install 802.11 wireless options where appropriate
    • Install star-based cable plants
    • Install only high-quality cable
    • Follow all building codes
    • Do not exceed 25 pounds of force when pulling twisted-pair cable
    • Follow rules for cable bend radius
    continued…
  • 13. Guidelines for Installing Cable
    • Leave extra cable at endpoints
    • Use a qualified contractor, if desired
    • Adhere to IEEE specs for cable and installation
    • Label cable following EIA/TIA-606 standard
    • Ground cable plants
  • 14. Structured Wiring
    • Cable fans out in horizontal star fashion from centralized chassis switch(es) or hub(s) located in telecommunications rooms or wiring closets
  • 15. Structured Wiring Requirements
    • Flexible cabling, eg, twisted-pair
    • Wiring nodes into physical star
    • Adherence to EIA/TIA-568-A / EIA/TIA-568-B standards for horizontal wiring
    • Centralized cable plant in chassis hubs or switches
    • Built-in intelligence for chassis hubs or switches
    continued…
  • 16. Structured Wiring Requirements
    • Ability to isolate hosts/servers on own cable segment
    • Ability to provide high-speed links to network devices
  • 17. Vertical Wiring
    • Cabling and network equipment used between floors
    • Physically links telecommunications room(s) on one floor to adjoining floors
    • Ties horizontal cable on each floor into logical backbone
  • 18. Principles of Vertical Wiring
    • Deploy extended star topology between devices
    • Use high-speed cable to reduce congestion and because it is not susceptible to EMI and RFI
    • Follow EIA/TIA-568-A / EIA/TIA-568-B standards for vertical or backbone cabling
    • Use riser rated cable for cable runs through cable ports or vertical shafts
    • Install fire-stop material
  • 19. Structured Networking
    • Use of solid horizontal and vertical wiring design that enables centralizing a network at strategic points
  • 20.  
  • 21. Administrative Capabilities of Structured Networks
    • Centralize or distribute network management
    • Incorporate vertical and horizontal network design using high-speed communications on the backbone (fat pipes)
    • Reconfigure network physically and logically
    continued…
  • 22. Administrative Capabilities of Structured Networks
    • Segment network according to workgroup patterns, using VLANs
    • Add redundancy
    • Quickly expand network and introduce new high-speed network options
    • Proactively monitor and diagnose problems for quick resolution
  • 23. Using Full-Duplex Communications
    • Ability to send and receive simultaneously
    • Use in areas of network with high-speed links
    • Eliminates collisions
    • Increases network throughput and reduces number of lost frames
    • Most switches employ one of two types of flow control
      • Jamming
      • Buffering
  • 24. Bridge, Router, and Hub Design Issues
    • Bridges and routers
      • Design flexibility
      • High-speed networking options
      • Redundancy
    • Hubs
      • Centralize network management and troubleshooting
      • Reproduce network traffic on all segments
  • 25. Advantages of RFIs and RFPs
    • Help organizations clearly define needs
    • Provide vendors with understanding of the organization
    • Enable vendors to show how they would address those needs
    • Provide basis for contract negotiation
    • Supply guidelines for installation process
  • 26. LAN Design Principles
    • Replace legacy hubs with switches
    • Replace older switches that do not offer SNMP compatibility with newer ones that have it
    • Connect high-speed workstations to switches
    • Connect servers to high-speed switched ports
    • Connect integrated or workgroup area switches to high-speed switches
    • Connect major department segments or high-speed switches to routers
  • 27. Walking Through a Design
  • 28.  
  • 29.  
  • 30.  
  • 31. Locating Hosts and Servers
    • In centralized host or server farms
      • Saves money
      • High traffic
    • In different locations throughout the network
      • Reduces network traffic
      • Provides security
        • Flexibility if disaster destroys one location
        • Can have redundant hosts at different locations
  • 32. Connecting Hosts and Servers
  • 33. Building in Redundancy
  • 34. Interspersed Hosts and Servers
  • 35. Designing for Multimedia Applications
    • Often include increased bandwidth
    • Often include implementation of Internet Group Management Protocol
  • 36.  
  • 37. Wireless LAN Network Designs
    • Peer-to-peer
    • Multiple-cell
  • 38. Peer-to-Peer Design
  • 39.  
  • 40. Maintenance and Support Issues
    • Constant process
    • To reduce maintenance, develop schemes to replace aging devices before they become a maintenance problem
  • 41. WAN Design Principles
    • Devices required at local site to accomplish WAN connectivity
      • Routers
      • Access servers
      • Modems
      • Specialized adapters
      • Multiplexers
      • Wireless, microwave, and satellite devices
      • ATM WAN access switches
  • 42. Configuring LAN Topology for WAN Connectivity
  • 43. WAN Connectivity Using a Router
  • 44. Wireless MANs and WANs
    • Wireless MAN options
      • Wireless bridge
      • Proprietary infrared design
      • Proprietary radio wave options
      • Terrestrial microwave
    • Wireless WAN options
      • Geosynchronous satellites
      • LEO satellites
  • 45. WAN Provider Topologies
    • Established by WAN service provider
    • Selection depends on:
      • Bandwidth required
      • Budget
      • Speed and type of interfaces on the LAN
  • 46. Price Structure
    • Ranges from unlimited usage to limited usage billed per minute
    • Cost-related elements
      • Monthly service charges
      • LAN connectivity equipment
      • User training and support
      • Network staff training
      • Network support and troubleshooting
      • Lost work time when a connection is down
      • Periodic equipment upgrade costs
  • 47. Bandwidth Considerations
    • Choice of service provider depends on:
      • Amount of bandwidth needed
      • Service level agreement (SLA) offered by provider
  • 48. Vendor and Customer Equipment
    • Equipment varies according to size of vendor
    • Equipment should be at more than one location
  • 49. Chapter Summary
    • General LAN design principles
      • Accommodating for growth and security
      • Implementing the cable plant
      • Using structured wiring and structured networking techniques
      • Using full-duplex communications
      • Designing around switches and routers
      • Creating requests for information and requests for proposals
    continued…
  • 50. Chapter Summary
    • Specific LAN design principles
      • Where to locate hosts and servers
      • How to design for multimedia applications
    • Wireless LAN designs and maintenance and support issues
    continued…
  • 51. Chapter Summary
    • WAN design principles
      • Wireless MAN and WAN designs
      • WAN provider topologies
      • Price structure
      • Bandwidth
      • Equipment issues