Expand Configuration and Management Manual (G06.24+)

Subsystem Description
Expand Configuration and Management Manual—523347-008
18-17
Example of End-to-End Protocol Packet Exchanges
Normal Data Exchange
Figure 18-3 is an example of an error-free exchange of data. Node \A sends two LRQs
to node \B. Node \B sends ACK sequence number 2 to indicate the positive
acknowledgment of node \A’s LRQs and then replies to each LRQ with an LCMP. Node
\A acknowledges node \B’s LCMPs by sending ACK sequence number 2.
Note. The sequence number of an LCMP does not necessarily match the sequence number of
a corresponding LRQ. The explicit ACK may not be seen if other data packets are being
transmitted.
Figure 18-3. Normal Exchange
012CDT .CDD
LRQ (0)
LRQ (1)
ACK (2)
LCMP (0)
LCMP (1)
ACK (2)
NODE \A NODE \B