SNAX/APC Management Programming Manual

ALTER PTNR-MODE
Commands and Responses
111813 Tandem Computers Incorporated 5–35
ZAPC-TKN-RESPONSIBLE
specifies the LU that is responsible for selecting and deactivating sessions, as a
result of a change that decreases the session limit or the maximum number of
contention-winner sessions for the source or target LU. This token can be
specified only when the specified PTNR-MODE object is in the STARTED state.
Otherwise, the command is rejected with the error
ZAPC-ERR-TKN-INV-IN-SUMSTATE.
ZAPC-TKN-SEND-PACING-WINDOW
specifies the size of the send pacing window of sessions established by the local
LU sending a BIND request. This token can be specified only when the specified
PTNR-MODE object is in the STOPPED state. Otherwise, the token is not
processed, and the command is rejected with the error
ZAPC-ERR-TKN-INV-IN-SUMSTATE.
ZAPC-TKN-SESS-LIM
specifies the maximum number of sessions that the PTNR-MODE object can have.
This token can be specified only when the specified PTNR-MODE object is in the
STARTED state. Otherwise, the command is rejected with the error
ZAPC-ERR-TKN-INV-IN-SUMSTATE.
Operational Notes
The value of ZAPC-TKN-RESPONSIBLE can be ZAPC-VAL-RESPONSIBLE-
SOURCE or ZAPC-VAL-RESPONSIBLE-TARGET.
If the target PTNR-MODE object is in the STARTED state, a
CHANGE_SESSION_LIMIT CNOS verb is issued.
Maximum RU (request unit) size is limited by the underlying access method.
SNAX/XF and SNAX/CDF support RUs up to 4,096 bytes. SNAX/APN supports
RUs up to 16,000 bytes.
Since SNAX/APC is unable to find the upper limit of the underlying SNAX access
method (such as SNAX/APN, SNAX/XF, or SNAX/CDF) of an LU until the LU is
started, the ZAPC-TKN-D-MAXINRUSIZE and ZAPC-TKN-D-MAXOUTRUSIZE
tokens are not validated against the underlying SNAX access method. However if
the values of these tokens exceeds the upper limit of the underlying SNAX access
method, the ZAPC-TKN-CUR-MAXINRUSIZE and ZAPC-TKN-CUR-
MAXOUTRUSIZE tokens (in the INFO PTNR-MODE response buffer) are set to
the upper limit after the PTNR-MODE is started. If the values of the ZAPC-TKN-
D-MAXINRUSIZE and ZAPC-TKN-D-MAXOUTRUSIZE tokens do not exceed the
upper limit, the ZAPC-TKN-CUR-MAXINRUSIZE and ZAPC-TKN-CUR-
MAXOUTRUSIZE tokens are set when the PTNR-MODE object is started to the
values specified in the ZAPC-TKN-D-MAXINRUSIZE and ZAPC-TKN-D-
MAXOUTRUSIZE tokens.