Www.ciscopress.com Copyright 2003 CCNA 4 Chapter 15 Frame Relay By Your Name. - презентация

1 Copyright 2003 CCNA 4 Chapter 15 Frame Relay By Your Name

2 Copyright 2003 Objectives Frame Relay concepts Configuring Frame Relay

3 Copyright 2003 Frame Relay Operation

4 Copyright 2003 Frame Relay Concepts

5 Copyright 2003 Frame Relay Switches

6 Copyright 2003 DLCI The data-link connection identifier (DLCI) is stored in the Address field of every frame transmitted.

7 Copyright 2003 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 Copyright 2003 Frame Relay Stack Layered Support

9 Copyright 2003 Frame Relay Functions

10 Copyright 2003 Bandwidth and Flow Control Bit counter Example 1

11 Copyright 2003 Concepts

12 Copyright 2003 LAPF Frame

13 Copyright 2003 Full-Mesh Topology

14 Copyright 2003 Frame Relay Mesh

15 Copyright 2003 LMI 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 Copyright 2003 Stage 1 of Inverse ARP and LMI Operation

17 Copyright 2003 Stage 2 of Inverse ARP and LMI Operation

18 Copyright 2003 Configuring Frame Relay

19 Copyright 2003 Configuring Basic Frame Relay

20 Copyright 2003 Configuring a Static Frame Relay Map

21 Copyright 2003 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.

22 Copyright 2003 Frame Relay Subinterfaces

23 Copyright 2003 Configuring PPP Interfaces

24 Copyright 2003 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

25 Copyright 2003 The show frame-relay lmi Command

26 Copyright 2003 The show frame-relay pvc Command

27 Copyright 2003 The show frame-relay map Command

28 Copyright 2003 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.