For success on your CCNA 640-802 and CCENT exams, you call for to grasp how and why Frame Relay LMI messages operate. You obligation to know this for real-world networking as well, since Frame Relay is prevailing in today's networks - and lacking LMI, you have no Frame Relay!
The Local Management Interface (LMI) messages are dispatched involving the DCE, as usual the resource provider, and the DTE, the Cisco skilled worker. LMI Status messages ladle as keepalives for the framework link. If keepalives are not continually prescriptive by some the DCE and DTE, the supporting structure connexion will small indefinite amount. The LMI as well indicates the PVC cachet to the router, reflected as either influential or unreactive.