1 ccna 4 v3.1 module 5. 2 ccna 4 v3.0 module 5 frame relay
Post on 22-Dec-2015
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TRANSCRIPT
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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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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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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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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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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