1 / 33

Year 2 - Chapter 4/Cisco 3 - Module 4 LAN Design

Year 2 - Chapter 4/Cisco 3 - Module 4 LAN Design. By Carl Marandola. Objectives. Explain LAN design goals Identify LAN design issues Explain network design methodology Describe how to gather and analyze network equipment Identify Layer 1 (media and topology) design issues

quanda
Download Presentation

Year 2 - Chapter 4/Cisco 3 - Module 4 LAN Design

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. Year 2 - Chapter 4/Cisco 3 - Module 4LAN Design By Carl Marandola

  2. Objectives • Explain LAN design goals • Identify LAN design issues • Explain network design methodology • Describe how to gather and analyze network equipment • Identify Layer 1 (media and topology) design issues • Identify Layer 2 (LAN switching) design issues • Identify Layer 3 (routing) design issues • Describe the physical and logical network implementation documentation

  3. LAN Design Goals • Functionality • The network must work. • Scalability • The network must be able to grow and contract to meet the needs of the organization. • Adaptability • The network must adapt to new technologies. • Manageability • The network must support network monitoring and management.

  4. Critical Components of LAN Design • Function and Placement of Servers • Intranets • Collision Detection (Ethernet) • Segmentation • Bandwidth Versus Broadcast Domains

  5. Server Placement • Servers can be categorized into two distinct classes: • Enterprise servers • Workgroup (departmental) servers

  6. Intranets • Centralized Web Servers (Comparable to Enterprise Servers) • Limited to Internal Users • Those that have logged in to corporate network • Accessed by Web Browser • Many Day-to-Day Job Functions on the Web

  7. Collision Detection (Ethernet) • Legacy Ethernet • Contention refers to excessive collisions caused by too many devices vying for services. • Broadcasts becomes excessive when: • Too many client packets looking for services • Too many server packets announcing services • Too many routing table updates • Too many broadcast-dependent protocols, such as ARP, DHCP, and so forth

  8. Broadcast and Collision Domains

  9. Network Design Methodology • Gathering Requirements • Analyzing Requirements • Designing the Network Topology • Designing the Layer 1, 2, and 3 LAN structure • Documenting the logical and physical network

  10. Gathering Requirements • Who will be using the network? • What resources do they need to access? • What is their level of skill? • What are their attitudes toward computers and applications? • What data and processes are mission-critical? • What protocols are allowed on the network? • What desktop hosts (OSs) are supported? • Who has authority over addressing, naming, topology design, and configuration? • What about the existing computer hardware and software? • How are these resources currently linked and shared? • What financial resources are available? • Who controls these resources?

  11. Analyzing Requirements

  12. Develop a Physical Topology

  13. OSI Layer 1, 2, and 3 Issues

  14. Layer 1 Topology: Signaling Method, Medium Type, and Maximum Length

  15. MDF in a Star Topology

  16. MDFs and IDFs

  17. Extended Star

  18. Fast Ethernet or Gigabit Ethernet Fast Ethernet or Gigabit Ethernet 10BaseT, 100BaseTX, and 1000BaseX Ethernet • 10 Mbps (and 100 Mbps) to desktops • Vertical cabling 100 Mbps (or Gigabit) between MDFs and IDFs • 100 Mbps (or Gigabit) server to network • Often multiple links combined into channels to provide increased bandwidth in vertical runs and server connections

  19. Elements of a Logical Topology Diagram

  20. Cut Sheet

  21. Select Layer 2 Devices

  22. Asymmetric Switching

  23. Switches to Reduce Congestion

  24. Determining the Number of Cable Runs and Drops

  25. Hubs Share (Split) Bandwidth

  26. Switches, Hubs, and Collision Domains Switches combined with full-duplex create collision-free domains.

  27. Layer 3 Design

  28. VLANs in the Design

  29. Routers Provides Logical Structure to a Network

  30. Diagramming a Standards-Based LAN with Routers

  31. Logical Maps

  32. Addressing Maps

  33. Physical Maps

More Related