What is LMI in computer?

What is LMI in computer?

Local Management Interface (LMI) is a term for some signaling standards used in networks, namely frame relay and Carrier Ethernet.

What is management interface used for?

Management interfaces allow network operators to manage the devices in their networks by providing access to each device’s control, configuration, and status information.

What are the LMI extensions or the features for managing complex internetwork?

It offers a number of features (called extensions) for managing complex internetworks. Key Frame Relay LMI extensions include global addressing, virtual-circuit status messages, and multicasting.

What is DLCI in frame relay?

A data link connection identifier (DLCI) is a Frame Relay 10-bit-wide link-local virtual circuit identifier used to assign frames to a specific PVC or SVC. Frame Relay networks use DLCIs to statistically multiplex frames. DLCIs are preloaded into each switch and act as road signs to the traveling frames.

What is a frame relay switch?

Frame relay is a packet-switching telecommunication service designed for cost-efficient data transmission for intermittent traffic between local area networks (LANs) and between endpoints in wide area networks (WANs).

What is interface Management?

Definition: Interface management includes the activities of defining, controlling, and communicating the information needed to enable unrelated objects (including systems, services, equipment, software, and data) to co-function. Most new systems or services require external interfaces with other systems or services.

What are the basic management interfaces of a managed switch?

Managed switches support Simple Network Management Protocol (SNMP) via embedded agents and have a command line interface (CLI) that can be accessed via serial console, Telnet, and Secure Shell.

How do you check a frame relay?

1. Use the show interfaces serial command to check the state of the interface. 2. If the output shows that the interface is up but the line protocol is down, use the show frame-relay lmi exec command to see which LMI type is configured on the Frame Relay interface.

What is a primary benefit of Frame Relay?

Benefits or advantages of Frame Relay It offers high throughput compare to X. 25. ➨The bandwidth can be allocated dynamically as per need. ➨The network overhead is less due to incorporation of congestion control mechanism.

What is the local management interface ( LMI )?

The Local Management Interface (LMI) is a set of extensions to the Frame Relay protocol that were designed to provide information about the status of Frame Relay networks, and extend the technology’s capabilities.

What does the Ethernet local management interface do?

Ethernet Local Management Interface (E-LMI) is an Ethernet layer operation, administration, and management (OAM) protocol defined by the Metro Ethernet Forum (MEF) for Carrier Ethernet networks. It provides information that enables auto configuration of customer edge (CE) devices. Odom, Wendell (2008).

Which is the LMI type defined by ANSI?

ANSI. This is the LMI type defined by ANSI. It uses DLCI 0 to exchange status information. Q.933a. This is the LMI type defined by the ITU-T. It uses DLCI 0 to exchange status information. A router and its local Frame Relay switch must be using the same LMI type in order for diagnostic messages to be passed between them.

How is LMi used in frame relay switch?

For example, LMI is used to send keepalive messages between a router and a Frame Relay switch. These messages verify the status of PVCs, and help to ensure that data can be transferred between Frame Relay DTE and DCE equipment.

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