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Appendix F. Frame Relay Firmware Version
F-2 Express 4100/4110 User Manual 61200176L2-1
Frame Relay/Maintenance Protocol
Write security: 3, Read security: 5
The Frame Relay maintenance protocol is used on the WAN port. The
maintenance protocol is used to send link status and virtual circuit infor-
mation between Frame Relay switches and other devices (such as routers)
that communicate with them. Possible choices are listed below.
Frame Relay/Polling Frequency
Write security: 3, Read security: 5
This parameter is the interval that the Express 4100/4110 polls the Frame
Relay switch using the maintenance protocol selected above. The Express
4100/4110 is required to poll the Frame Relay switch periodically to deter-
mine whether the link is active. The value is in seconds 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 Relay
maintenance protocol. Each protocol parameter can be individually con-
figured for each DLCI. By factory default, the DLCI map is empty.
When empty and a maintenance protocol other than static is used, the
Express 4100/4110 will poll the switch to determine which DLCIs are
active. These active DLCIs will attempt to determine the IP and IPX
addresses on the other end of the virtual circuit using Inverse ARP
Annex D
(def) This is an ANSI standard and is the
most commonly used standard in the
US.
Annex A
This is the CCITT European standard.
LMI
This was developed by a vendor con-
sortium and is also known as the “con-
sortium” management interface
specification. It is still used by some
carriers in the U.S.
Static
This should be selected when there is
no Frame Relay switch in the circuit.
The DLCIs are assigned in the DLCI
Mapping and must be the same for the
device it will communicate with.