ADTRAN 1200350L1, User Manual

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Chapter 4: Configuration Overview
61200350L1-1 Router Option Module User Manual 4-27
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 cir-
cuit information 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 Router Option Module polls
the Frame Relay switch using the maintenance protocol selected
above. The Router Option Module is required to poll the Frame Re-
lay switch periodically to determine whether the link is active. The
value is in seconds and ranges from 5 to 30 seconds.
Frame Relay/DLCI Mapping
This menu allows each DLCI to be mapped to a particular protocol.
Each protocol parameter can be individually configured for each
DLCI. By factory default, the DLCI map is empty.
When empty and a maintenance protocol other than static is used,
the Router Option Module 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 In-
verse ARP (IARP). If there is a response, the network learned will be
added to the router tables and the virtual circuit will be treated as an
unnumbered interface. Bridge mode is not attempted in this case.
Annex D(def) An ANSI standard that is most commonly used
in the US.
Annex A The CCITT European standard.
LMI Used by some carriers in the U.S.
Developed by a vendor consortium and known
as the “consortium” management interface spec-
ification.
Static Select 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.