DRAG DROP -
Drag and drop the Frame Relay LMI extensions from the left onto the correct descriptions on the right.
Select and Place:
 
















 

Suggested Answer: 
    

LMI Extensions -
In addition to the basic Frame Relay protocol functions for transferring data, the consortium Frame Relay specification includes LMI extensions that make supporting large, complex internetworks easier. Some LMI extensions are referred to as "common" and are expected to be implemented by everyone who adopts the specification. Other LMI functions are referred to as "optional." A summary of the LMI extensions follows: "¢ ""Provide communication and synchronization between the network and the user device, periodically reporting
Virtual circuit status messages (common)
 
the existence of new PVCs and the deletion of already existing PVCs, and generally provide information about PVC integrity. Virtual circuit status messages prevent the sending of data into black holes""that is, over PVCs that no longer exist. "¢ ""Allows a sender to transmit a single frame but have it delivered by the network to multiple recipients. Thus, multicasting supports
Multicasting (optional)
 
the efficient conveyance of routing protocol messages and address resolution procedures that typically must be sent to many destinations simultaneously. "¢ ""Gives connection identifiers global rather than local significance, allowing them to be used to identify a specific interface to
Global addressing (optional)
 
the Frame Relay network. Global addressing makes the Frame Relay network resemble a local-area network (LAN) in terms of addressing; Address Resolution
Protocols, therefore, perform over Frame Relay exactly as they do over a LAN. "¢ ""Provides for an XON/XOFF flow control mechanism that applies to the entire Frame Relay interface. It is intended for
Simple flow control (optional)
 
devices whose higher layers cannot use the congestion notification bits and that need some level of flow control.
Reference:
https://www.cisco.com/en/US/docs/internetworking/troubleshooting/guide/tr1918.html

This question is in 300-101 Cisco Implementing Cisco IP Routing (ROUTE) Exam
For getting Cisco Certified Network Professional (CCNP) Routing and Switching Certificate




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