ADTRAN Express 6120 Manual de Instruções descarregar pdf (Página 67)

Chapter 3. Terminal Menu Operation and Structure

61200176L1-1 Express 6100/6120 User Manual 3-33

»» Frame Relay/Maintenance Protocol

Write security:3, Readsecurity: 5

TheFrameRelaymaintenanceprotocolisusedon the WAN port. The

maintenance protocol is usedto send link status and virtual circuit in-

formation between Frame Relay switches and other devices (such as

routers) that communicate with them. Possible choices are listed be-

low.

»» Frame Relay/Polling Frequency

Write security:3, Readsecurity: 5

This parameter is the interval that the Express 6100/6120 polls the

Frame 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 Mapping

This 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 is

empty.

Whenempty and a maintenanceprotocolotherthan staticisused,the

Express 6100/6120 will poll the switch to determine which DLCIs are

Annex 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 consortium

and is also known as the “consortium” man-

agement interface specification. It is still used

by some carriers in the U.S.

Static Thisshouldbeselectedwhenthereisno Frame

Relayswitchinthecircuit. TheDLCIsareas-

signedintheDLCIMappingandmustbethe

same for the device it will communicate with.

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ADTRAN Express 6120 Manual de Instruções Página 67