HP-UX SNAplus2 R7 NOF Programmer's Guide

NOF API Verbs
DEFINE_LS
VQL_PVC
Permanent Virtual Circuit
If you define both SVC and PVC LSs between the same local node and remote node, unpredictable results
may occur if the SVC LS is started first (since it may not be possible to match the incoming call to the correct
LS). To avoid these problems, ensure that PVC LSs are activated before any SVC LSs between the same pair
of nodes.
req_rev_charge
Specifies whether X.25 should request reverse charging when attempting to contact the remote system using
this LS. Possible values are:
AP_YES
Request reverse charging.
AP_NO
Do not request reverse charging. If the X.25 network does not support facilities negotiation, this
parameter must be set to AP_NO.
If the X.25 network does not support facilities negotiation, this parameter must be set to AP_NO (also see the
fac parameter below).
loc_packet
Packet size used for sending data on switched virtual circuits from the local station to the remote station.
This parameter is used only if the vc_type parameter is set to VQL_SVC. The packet size you specify is sent
as an optional facility on the outgoing call.
The actual size used is 2 to the power of loc_packet; for example, setting loc_packet to 7 indicates a packet
size of 2 to the power of 7, which is 128. To indicate using the default packet size for the network, set this
parameter to zero. Check with the administrator of your X.25 network to determine the correct value to use.
rem_packet
Packet size used for receiving data on switched virtual circuits from the remote station. This parameter is
used only if the vc_type parameter is set to VQL_SVC. The packet size you specify is sent as an optional
facility on the outgoing call.
The actual size used is 2 to the power of rem_packet (as for loc_packet above). To indicate using the default
packet size for the network, set this parameter to zero. Check with the administrator of your X.25 network
to determine the correct value to use.
loc_wsize
Window size used for sending data from the local station to the remote station. Specify a value in the range
1–7, or zero to indicate using the default window size for the network. Check with the administrator of your
X.25 network to determine the correct value to use.
rem_wsize
Window size used for receiving data from the remote station. Specify a value in the range 1–7, or zero to
indicate using the default window size for the network. Check with the administrator of your X.25 network
to determine the correct value to use.
fac_len
Length of the additional X.25 facilities data that follows (in the fac parameter). If no additional data is
required, specify zero. If the X.25 network does not support facilities negotiation, specify zero and see the
fac parameter below for more information.
fac
If the X.25 provider software is configured to allow flow control negotiation, SNAplus2 includes information
about reverse charging options, packet sizes, and window sizes in the facilities data sent to the remote system.
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