Space Link Extension - Service Management - CCSDS

DRAFT RECOMMENDED STANDARD FOR SPACE LINK EXTENSION SERVICE MANAGEMENT
NOTE – The failure of syntactic and authentication validation and/or message set
validation of an UnrecognizedMessageSetResponse, an Invalid-
MessageResponse, or a Confirmation from the Recipient will eventually
result in the expiration of the associated disposition timer, which results in the
Notifier’s informing the Recipient of the event by other means.
Upon receipt of an UnrecognizedMessageSetResponse, the Recipient 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 Recipient attempts to correlate the contents of the syntactically correct
UnrecognizedMessageSetResponse with a Confirmation that has been sent by
the Recipient. If the UnrecognizedMessageSetResponse can be correlated to a
Confirmation, the Recipient informs the Notifier (by other means) that it received the
Notification. The Recipient may also perform local functions to determine why the
Confirmation was not validated by the Notifier).
3.4.3.3 Sequence Diagram
Figure 3-25 is the sequence diagram for the notified operation procedure pattern. It is
composed of multiple instances of the Send Message sequence specified in figure 3-4.
ConfirmedNotificationProcedurePattern {notifier, recipient, Notification, Confirmation}
notifier
recipient
ref
Send Message (Notification, notifier, recipient)
ref
Send Message (Confirmation, recipient, notifier)
Figure 3-25: Sequence Diagram for Notified Operation Procedure Pattern
3.4.3.4 State Machines
Figures 3-26 and 3-27 are the state diagrams for the notified operation procedure pattern
from the points of view of the operation Notifier and Receiver, respectively. Tables 3-34 and
3-35 are the corresponding state tables.
CCSDS 910.11-R-2 Page 3-59 March 2008