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RAD Data comm Modular Access Device with Integrated Router Manuel D’Utilisation

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FCD-IPM Installation and Operation Manual 
Chapter 5  Setup Menu 
 
Interface Parameters Menu 
5-71 
Full Status Enquiry
Full Status
 Enquiry
Status Enquiry
Status Enquiry Reply
Full Status Reply
Status Enquiry Reply
Status Enquiry Reply
Status Enquiry Reply
Full Status Reply
Status Enquiry
Status Enquiry
Status Enquiry
Time
10 seconds
10 seconds
10 seconds
10 seconds
10 seconds
Polling interval = 10
Full enquiry interval = 4
FCD-IPM
Frame Relay Network
 
Figure 5-74.  Polling Intervals 
 
Sliding monitored events window
S.E.
Frame
S.E.
Frame
S.E
Frame
.
?
?
?
Acknowledged.
Frame
Monitored events
(status enquiring frames
and full status enquiry
frame = 5)
Link is DOWN when unacknowledged monitored events > 3
Link is UP when unacknowledged monitored events < 3
Unacknowledged.
Frame
S.E.
Frame
F.S.E.
Frame
S.E.
Frame
S.E.
Frame
Error threshold     = 3
Monitored events = 5
 
Figure 5-75.  Monitored Events 
After the link is declared DOWN, it can only be declared UP
 
 
 again when the 
sliding monitored events window contains only successfully monitored events. 
?
3
3
?
?
?
?
?
3
3
3
3
3
Link is DOWN
Link is UP
Link is UP again
 
Figure 5-76.  Monitored Events - Down Link