Space Link Extension - Service Management - CCSDS

DRAFT RECOMMENDED STANDARD FOR SPACE LINK EXTENSION SERVICE MANAGEMENT
UM:SLE-SM Entity
CM:SLE-SM Entity
Sender
message set
SLE-SM
message set
port
Receiver
exception response
SLE-SM
exception
response port
Figure 3-2: Exchange of SLE-SM Documents via Message Set and Exception
Response Ports
3.3.2 PROTOCOL EXECUTION
3.3.2.1 General
The SLE-SM document exchange protocol is described in terms of transmitting an SLE-SM
message set from a Sender to a Receiver. On the occurrence of certain exception conditions,
the Receiver sends exception responses back to the Sender.
The following subsections describe the Sender and Receiver activities involved in the
execution of the SLE-SM document exchange protocol.
3.3.2.2 Sender Generates Message Set
The execution of the SLE-SM document exchange protocol begins with a Sender generating
an SleSmMessageSet containing one or more SLE-SM messages, and sending the
message set to the SLE-SM message set port of the intended Receiver.
The messages carried by an SleSmMessageSet generated by a Sender are:
– one or more invocation messages that are used to initiate the various SLE-SM
operations;
– a single return message that reports the status, outcome, or product of an operation;
– a single notification message that informs of the occurrence of a non-routine event; or
– a single confirmation message that confirms receipt of a notification.
CCSDS 910.11-R-2 Page 3-5 March 2008