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CCNA 3 v3. 1 Module 8

CCNA 3 v3. 1 Module 8. CCNA 3 Module 8 Virtual LANS (VLANS). Objectives of Module 8. VLAN concepts VLAN configuration Troubleshooting VLANs. Introduction to VLANs. VLANs.

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CCNA 3 v3. 1 Module 8

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  1. CCNA 3 v3.1 Module 8

  2. CCNA 3 Module 8 Virtual LANS (VLANS)

  3. Objectives of Module 8 • VLAN concepts • VLAN configuration • Troubleshooting VLANs

  4. Introduction to VLANs

  5. VLANs VLANs logically segment switched networks based on an organization's functions, project teams, or applications as opposed to a physical or geographical basis.

  6. Broadcast Domains

  7. 3 Broadcast Domains, 3 VLANs

  8. Static VLANs

  9. Dynamic VLANs

  10. Port-Centric VLANs

  11. VLAN Configuration

  12. Benefits of VLANs • Easily move workstations on the LAN • Easily add workstations to the LAN • Easily change the LAN configuration • Easily control network traffic • Improve security

  13. Communicating Between VLANs

  14. VLAN Types

  15. Inter-Switch Link

  16. Concurrent Transmissions in a Switch

  17. End-to-End VLANs

  18. Static VLANs • Static VLANs work well in networks where the following is true: • Moves are controlled and managed. • There is robust VLAN management software to configure the ports. • It is not desirable to assume the additional overhead required when maintaining end-station MAC addresses and custom filtering tables.

  19. Verifying VLAN’s

  20. Saving VLAN Configuration Back up using the copy running-config tftp command, or you can use the HyperTerminal Capture Text feature to store the configuration settings.

  21. Deleting VLANs

  22. VLAN Problem Isolation

  23. Problem Isolation in Catalyst Networks

  24. Preventing Broadcast Storms

  25. Common Problems in Troubleshooting VLANs

  26. show vlanCommand

  27. Catalyst IOS Keyword Syntax Description

  28. show spanning-tree Command

  29. VLAN Troubleshooting Scenarios A trunk link cannot be established between a switch and a router

  30. VLAN Troubleshooting Scenarios VTP is not properly propagating VLAN configuration changes.

  31. VLAN Troubleshooting Scenarios Dropped packets and loops

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