3.12.9 CmdSN
CmdSN is either the initial command sequence number of a
session (for
the first Login request of a session -
the "leading" login) or the
command sequence number in the command stream
(e.g., if the leading
login carries the CmdSN 123 all other
Login requests carry the CmdSN
123 and the first non-immediate command
also carries the CmdSN 123).
The target MUST use the value presented
with the first login request.
Why
does it spell out “the first non-immediate command”? It would seem like it
should just say “the first command … “. Because immediate commands always get
the next CmdSN anyway.
Eddy
