Space Link Extension - Service Management - CCSDS

DRAFT RECOMMENDED STANDARD FOR SPACE LINK EXTENSION SERVICE MANAGEMENT
validation are specific to each notified operation, and are specified in the associated Notifier
and Recipient requirements for each notified operation.
If the Notification is valid at the service management level, the Recipient returns a
Confirmation message to the Notifier’s message set port. The information returned as
part of the Confirmation is operation-specific. The Recipient may perform local
functions specific to a Notification as part of processing the Notification (e.g.,
updating local databases to reflect the Notification).
Upon receipt of an UnrecognizedMessageSetResponse or InvalidMessage-
Response, the Notifier performs exception response validation in accordance with the
Receive and Validate SLE-SM Exception Response activity subgroup of the Document
Exchange Protocol activity group specified in 3.3. The Notifier attempts to correlate the
contents of each syntactically correct UnrecognizedMessageSetResponse and
InvalidMessageResponse with a Notification that has been sent by the Notifier.
If the UnrecognizedMessageSetResponse or InvalidMessageResponse can
be correlated to a Notification, the Invoker informs (by other means) the Recipient of
the information contained in the Notification, and completes the procedure. The means
by which the Notifier informs the Recipient (e.g., attempt to retransmit the Notification
vs. contact by voice) is a local matter and may depend on the operation with which the
Notification is associated. The Notifier may also perform other local functions as a
result of the failure of the Notification.
Upon receipt of the SleSmMessageSet containing the Confirmation, the Notifier
performs message set validation as specified for the Receive and Validate SLE-SM Message
Set activity subgroup of the Document Exchange Protocol activity group in 3.3. If the
Confirmation is valid at the service management level, the Notifier completes the
notified operation procedure. The Notifier may perform local functions specific to a
Confirmation as part of completing the procedure (e.g., updating local databases to
reflect success of the Notification). If the SleSmMessageSet fails syntactic or
authorization validation, the Notifier generates and transmits an
UnrecognizedMessageSetResponse to the Recipient’s exception response port as
specified in 3.3. If the Confirmation message fails service management validation, the
message is deemed invalid and the Notifier is not required to interpret or act upon the
message any further.
If the Notifier does not receive a validated Confirmation before the confirmation timer
for that notification expires, the Notifier informs the Recipient of the information contained
in the Notification and completes the procedure. The means by which the Notifier
informs the Recipient (e.g., attempt to retransmit the Notification vs. contact by voice)
is a local matter and may depend on the operation with which the Notification is
associated. The Notifier may also perform other local functions as a result of the failure of
the Notification (e.g., manually update local databases to reflect that the Recipient has
been notified).
CCSDS 910.11-R-2 Page 3-58 March 2008