1 CCNA 4 v3.1 Module 5

2 CCNA 4 v3.0 Module 5 Frame Relay

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555 Objectives Frame Relay concepts Configuring Frame Relay

666 Frame Relay Operation

777 Frame Relay Switches

888 Frame Relay Concepts

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

10 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).

11 Frame Relay Stack Layered Support

12 Frame Relay Functions

13 Bandwidth and Flow Control Bit counter Example 1

14 Frame Relay Concepts

15 LAPF Frame

16 Full-Mesh Topology

17 Frame Relay Mesh

18 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

19 Stages of Inverse ARP and LMI Operation #1

20 Stages of Inverse ARP and LMI Operation #2

21 Configuring Basic Frame Relay

22 Configuring a Static Frame Relay Map

23 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.

24 Frame Relay Subinterfaces

25 Configuring Point-to-Point Subinterfaces

26 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

27 The show frame-relay lmi Command

28 The show frame-relay pvc Command

29 The show frame-relay map Command

30 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.