User`s guide
Configuring Common
Interface Characteristics
QMS CrownNet System Administratorî‚’'s Guide2-16
n The frame last received by that SAP
n The frame last sent to a specific address and that SAP, when
using a specific route found in the source routing table.
If the frame last sent or received included routing information, the
guess entry is updated to try a single-route-broadcast next time. In
any case, the current broadcast guess entry for an SAP is considered
successful and up to date when a frame is received specifically
addressed to the CrownNet interface on that SAP or a frame is sent to
a specific address and that SAP.
When an entry in the SAP table is not updated, it times out after any
of the following events:
n Five seconds have passed since the last transmission of a frame
using a route-type-guess for the source route of that SAP.
n Three frames have been sent using a route-type-guess, after a
previous route-type-guess timed out from any of the listed events.
n Ten frames have been sent using a route-type-guess after that
route-type-guess was considered successful by receiving a frame
addressed specifically to the CrownNet interface or by transmit-
ting a frame along a route found in the source routing table.
When a route-type-guess entry times out, it is updated with a new
guess taken in the following cycling order: no route, single route, all
routes.