Chapter 3. Terminal Menu Operation and Structure61200176L1-1 Express 6100/6120 User Manual 3-33»» Frame Relay/Maintenance ProtocolWrite security: 3, Read security: 5The Frame Relay maintenance protocol is used on the WAN port. Themaintenance protocol is used to send link status and virtual circuit in-formation between Frame Relay switches and other devices (such asrouters) that communicate with them. Possible choices are listed be-low.»» Frame Relay/Polling FrequencyWrite security: 3, Read security: 5This parameter is the interval that the Express 6100/6120 polls theFrame Relay switch using the maintenance protocol selected above.The Express 6100/6120 is required to poll the Frame Relay switch pe-riodically to determine whether the link is active. The value is in sec-onds and ranges from 5 to 30 seconds with a default of 15 seconds.»» Frame Relay/DLCI MappingThis menu allows each DLCI to be mapped to a particular Frame Re-lay maintenance protocol. Each protocol parameter can be individu-ally configured for each DLCI. By factory default, the DLCI map isempty.When empty and a maintenance protocol other than static is used, theExpress 6100/6120 will poll the switch to determine which DLCIs areAnnex D (def) This is an ANSI standard and is the most com-monly used standard in the US.Annex A This is the CCITT European standard.LMI This was developed by a vendor consortiumand is also known as the “consortium” man-agement interface specification. It is still usedby some carriers in the U.S.Static This should be selected when there is no FrameRelay switch in the circuit. The DLCIs are as-signed in the DLCI Mapping and must be thesame for the device it will communicate with.
