This read-create Unsigned32 (3..20) specifies, per its source description, how many consecutive BFD messages can be missed from the peer before the BFD session is declared down and upper-layer protocols like OSPF, IS-IS, or PIM are notified of the fault, for this admin-table template. Admins raise this on templates used over less reliable links to avoid flapping routing protocols on a single missed BFD packet, or lower it for templates needing the fastest possible failure detection. For example, setting this to 3 with a fast transmit interval gives very quick failure detection, while raising it to 10 on a noisy WAN link template reduces false failure declarations.