SNA Link/iX Node Managers Guide (30291-90507)

Chapter 2 71
SNA Node and Link Configuration
Configuring the SNA Node and Link
Inactivity Timeout
Required. The number of minutes that the QLLC
module will wait between incoming packets. The timer
is reset each time a packet is received. If the specified
number of minutes elapses before the next packet
arrives, the virtual circuit is cleared and then released.
For an incoming SVC, this results in a recoverable link
failure. If 0 is specified, the timer is disabled. This can
result in an indefinite period of inactivity; however,
note that it might be desirable to disable the timer for
permanent virtual circuits (PVCs).
Range: 0-32767 (integer)
Default: 0
Virtual Circuit Type
Required. The type of virtual circuit to be used to
connect to the host: permanent virtual circuit (PVC) or
switched virtual circuit (SVC). The X.25 network
subscription information and the host NPSI
configuration should be used to determine the type of
virtual circuits that are available for this connection.
If you specify PVC, you must also specify the PVC
Number field (see below).
If you specify SVC, you must also specify the Remote’s
X.25 Network Address and Call Direction fields
(both fields are described later in this chapter).
Values: PVC and SVC
Host Configuration:
• PVC: The TYPE operand of the X25.LINE macro for
the PVC must be set to PERMANENT, refer to Table
2-2.
• SVC: The TYPE operand of at least one X25.LINE
macro must be set to SWITCHED, refer to Table 2-3.
PVC DATA
Information about the permanent virtual circuit (PVC).
PVC Number
Conditionally required. The number identifying the
permanent virtual circuit that will connect the
HP e3000 node to the remote system. This is found in
the X.25 network subscription information, and is
equivalent to the Logical Channel Number (LCN).