1. CCNA 4 v3.0 Module 5 Frame Relay

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4. Objectives
Frame Relay concepts
Configuring Frame Relay

5. Frame Relay Operation

6. Frame Relay Switches

7. Frame Relay Concepts

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

9. 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).

10. Frame Relay Stack Layered Support

11. Frame Relay Functions

12. Bandwidth and Flow Control
Bit counter Example 1

13. Frame Relay Concepts

14. LAPF Frame

15. Full-Mesh Topology

16. Frame Relay Mesh

17. 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

18. Stages of Inverse ARP and LMI Operation #1

19. Stages of Inverse ARP and LMI Operation #2

20. Configuring Basic Frame Relay

21. Configuring a Static Frame Relay Map

22. 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.

23. Frame Relay Subinterfaces

24. Configuring Point-to-Point Subinterfaces

25. 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

26. The show frame-relay lmi Command

27. The show frame-relay pvc Command

28. The show frame-relay map Command

29. 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.