RAD Data comm Modular Access Device with Integrated Router 사용자 설명서
FCD-IPM Installation and Operation Manual
Chapter 5 Setup Menu
Interface Parameters Menu
5-71
Full Status Enquiry
Full Status
Enquiry
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
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