ccna 4 frame relay(ii)contents.kocw.net/kocw/document/2016/wonkwang/... · 2017-01-23 · 2 purpose...
TRANSCRIPT
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CCNA 4 Frame Relay(II)
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Purpose of This PowerPoint
• This PowerPoint primarily consists of the Target Indicators (TIs) of this module in CCNA version 3.0.
• It was created to give instructors a PowerPoint to take and modify as their own.
• This PowerPoint is:
NOT a study guide for the module final assessment.
NOT a study guide for the CCNA certification exam.
• Please report any mistakes you find in this PowerPoint by using the Academy Connection Help link.
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To Locate Instructional Resource Materials on Academy Connection:
• Go to the Community FTP Center to locate materials created by the instructor community
• Go to the Tools section
• Go to the Alpha Preview section
• Go to the Community link under Resources
• See the resources available on the Class home page for classes you are offering
• Search http://www.cisco.com
• Contact your parent academy!
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Objectives
• Frame Relay concepts
• Configuring Frame Relay
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Frame Relay Operation
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Frame Relay Switches
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Frame Relay Concepts
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Local Significance of DLCIs
The data-link connection identifier (DLCI) is stored
in the Address field of every frame transmitted.
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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).
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Frame Relay Stack Layered Support
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Frame Relay Functions
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Bandwidth and Flow Control
Bit counter Example 1
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Frame Relay Concepts
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LAPF Frame
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Full-Mesh Topology
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Frame Relay Mesh
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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
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Stages of Inverse ARP and LMI Operation #1
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Stages of Inverse ARP and LMI Operation #2
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Configuring Basic Frame Relay
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Configuring a Static Frame Relay Map
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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.
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Frame Relay Subinterfaces
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Configuring Point-to-Point Subinterfaces
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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
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The show frame-relay lmi Command
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The show frame-relay pvc Command
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The show frame-relay map Command
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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.