RAD Data comm Modular Access Device with Integrated Router, E1/T1 Polling Intervals

FCD-IPMInstallation and Operation Manual						Chapter 5 Setup Menu
Polling interval = 10
Full enquiry interval = 4
	FCD-IPM			Frame Relay Network
	Full Status Enquiry			Full Status Reply
10 seconds		Status Enquiry
				Status Enquiry Reply
10 seconds		Status Enquiry
				Status Enquiry Reply
10 seconds		Status Enquiry
				Status Enquiry Reply
10 seconds		Status Enquiry
				Status Enquiry Reply
10 seconds		Full Status
		Enquiry		Full Status Reply
			Time
Figure 5-74. Polling Intervals
Error threshold	= 3
Monitored events = 5
		Sliding monitored events window
S.E.	S.E.	S.E.	S.E.	F.S.E.	S.E.	S.E.
Frame	Frame	Frame	Frame	Frame	Frame	Frame
		?		?	?
Acknowledged.				Monitored events
Frame				(status enquiring frames
		Unacknowledged.		and full status enquiry
				frame = 5)
		Frame

Link is DOWN when unacknowledged monitored events > 3

Link is UP when unacknowledged monitored events < 3

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.

Link is DOWN

3 ? 3 ? ? ? ? ? 3 3 3 3 3

Link is UP Link is UP again

Figure 5-76. Monitored Events - Down Link

Interface Parameters Menu 5-71