Dynamic pvcs, Error threshold, Full status polling cycles – Visara LINCS Configuration User Manual
Page 61: Link verification timer, Lmi role, Max transmit frame size field
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Chapter 3. Line Options
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Dynamic PVCs
The Dynamic PVCs field toggles to ENABLE or DISABLE the use of dynamic PVCs.
If dynamic PVCs are DISABLED, LINCS will utilize only those DLCIs specified on the
PVC definition panels and on the LLC circuit panels. This setting may be desirable for security
reasons. Dynamic PVCs must be disabled for lines that do not have the LMI role set to User.
If dynamic PVCs are ENABLED, LINCS will communicate over all new PVCs reported by
LMI up to the 256 PVC board maximum. The default is ENABLE.
Error Threshold
The Error Threshold (N392) data entry field determines the number of errors that can occur
during a given measurement interval before a PVC is considered inactive.
Valid entries range from 1 to 10. The default is 3.
Full Status Polling Cycles
The Full Status Polling Cycles (N391) field tells LINCS how often to request a full status
report (every N391 polling cycles).
Valid entries for this data entry field range from 1 to 255. The default is 6.
Link Verification Timer
The Link Verification Time (T391) field toggles to define the frequency with which LMI
Status Enquiry messages are sent to the Frame Relay switch. This timer should be set to a
value less than the T392 timer configured on the switch.
Toggle choices are: 5, 10 (default), 15, 20, 25 and 30.
LMI Role
The Role field toggles to determine the LINCS LMI role. This field should be set to:
• User - (the default) if LINCS is connected to a switch with LMI enabled.
• Network (Switch) - if LINCS will emulate a switch over a connection to another user
device (FRTE).
• Disable - to disable the LMI feature.
Max Transmit Frame Size Field
Max Transmit Frame Size is a data entry field that determines the maximum size of the Frame
Relay frame to be transmitted by this line. This value includes all fields between the opening
and closing flags of a frame. LLC frames to be transmitted will be fragmented (as defined by
RFC1490) if necessary to conform to this value.
Valid entries range from 279 to 4119.