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CCNA 4 v3.0 Module 5 Frame Relay

CCNA 4 v3.0 Module 5 Frame Relay. Objectives. Frame Relay concepts Configuring Frame Relay. Frame Relay Operation. Frame Relay Switches. Frame Relay Concepts. Local Significance of DLCIs.

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CCNA 4 v3.0 Module 5 Frame Relay

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  1. CCNA 4 v3.0 Module 5 Frame Relay

  2. Objectives • Frame Relay concepts • Configuring Frame Relay

  3. Frame Relay Operation

  4. Frame Relay Switches

  5. Frame Relay Concepts

  6. Local Significance of DLCIs The data-link connection identifier (DLCI) is stored in the Address field of every frame transmitted.

  7. Terminology • The connection through the Frame Relay network between two DTEs is called a virtual circuit (VC). • Virtual circuits may be established dynamically by sending signaling messages to the network. In this case they are called switched virtual circuits (SVCs).

  8. Frame Relay Stack Layered Support

  9. Frame Relay Functions

  10. Bandwidth and Flow Control Bit counter Example 1

  11. Frame Relay Concepts

  12. LAPF Frame

  13. Full-Mesh Topology

  14. Frame Relay Mesh

  15. LMI • Three types of LMIs are supported by Cisco routers: • Cisco — The original LMI extensions • Ansi — Corresponding to the ANSI standard T1.617 Annex D • q933a — Corresponding to the ITU standard Q933 Annex A

  16. Stages of Inverse ARP and LMI Operation #1

  17. Stages of Inverse ARP and LMI Operation #2

  18. Configuring Basic Frame Relay

  19. Configuring a Static Frame Relay Map

  20. Reachability Issues with Routing Updates in NBMA By default, a Frame Relay network provides nonbroadcast multiaccess (NBMA) connectivity between remote sites. An NBMA environment is treated like other multiaccess media environments, where all the routers are on the same subnet.

  21. Frame Relay Subinterfaces

  22. Configuring Point-to-Point Subinterfaces

  23. Verifying Frame Relay • The show interfaces command displays information regarding the encapsulation and Layer 1 and Layer 2 status. It also displays information about the following: • The LMI type • The LMI DLCI • The Frame Relay data terminal equipment/data circuit-terminating equipment (DTE/DCE) type

  24. The show frame-relay lmi Command

  25. The show frame-relay pvc Command

  26. The show frame-relay map Command

  27. Troubleshooting Frame Relay • Use the debug frame-relay lmi command to determine whether the router and the Frame Relay switch are sending and receiving LMI packets properly.

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