Understand how to configure Frame Relay on a Cisco router.
It is crucial that you understand the difference between encapsulation, DLCI, LMI, and mappings.

Know how many encapsulation and LMI types Cisco supports.
Cisco supports two encapsulation methods (Cisco and IETF) and three LMI types (Cisco, ANSI, and Q.933A).

Key Terms and Concepts

Data Link Connection Identifiers (DLCIs)
Used to identify a Frame Relay virtual circuit. A Frame Relay service provider, like a telephone company, typically assigns DLCI values that are used by the Frame Relay protocol to distinguish between different virtual circuits on the network.

encapsulation A method of encasing or wrapping data (packets)
within a protocol that is understood by the device on the opposite side of the link.

Local Management Interface (LMI)
LMI messages are used to provide three types of information the current DLCI values, the global or local significance of the DLCI values, and the status of virtual circuits to routers participating in the Frame Relay network.

Related posts:

1. Commands to Configure Frame Relay LMIs, Maps, and Subinterfaces
2. key Frame Relay Terms and Features
3. Commands to Monitor Frame Relay Operation in the Router
4. Monitor Frame Relay Operation in the Router
5. key Frame Relay Terms and Features Exam Points
6. Virtual LANs Exams Points
7. PPP Operations to Encapsulate WAN data on Cisco Routers
8. Five Conversion Steps of Data Encapsulation Points
9. State a Relevant use and Context for ISDN Networking
10. Virtual LANs