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6620-3201
4.84 Confi gure
>
VXN client
Datawire’s VXN
®
protocol acts as a replacement to X.25 and the Layer 2 protocol that X.25 is
carried over. The Westermo unit still uses the X.25 entity to handle VXN sessions for the sake of
convenience.
Using the Web Page(s)
Service name:
The name of the Datawire VXN server to use. This is supplied by Datawire.
Primary host name:
The primary hostname to connect to when locating the Datawire VXN servers. Supplied by Datawire.
Primary port:
TCP port to use in conjunction with the
Primary hostname
. Supplied by Datawire.
Secondary host name:
Secondary hostname to connect to when locating the Datawire VXN servers. Supplied by Datawire.
Secondary port:
TCP port to use in conjunction with the
Secondary hostname
. Supplied by
Datawire.
Merchant ID:
Currently a
fi
xed string used by the unit when setting up security associations with the VXN server. In
the future, the Merchant ID will be supplied by the service making the transaction request (e.g. TPAD),
and may be extracted from the transaction itself.
Terminal ID:
Currently a
fi
xed string. In the future, the Terminal ID will be supplied by the service making the
transaction request.
OPNS server name:
The server name to use during OPNS negotiations. This parameter is supplied by Datawire, and is
currently set to “OPNS Server”.
OPNS service name:
The service to be used during OPNS negotiations, which is different to the service used for
transactions. This parameter is supplied by Datawire, and will usually be “opns.dw”.
Keep socket open between transactions:
When this parameter is set to “No”, the TCP socket will be closed once all outstanding transactions
are completed. When this parameter is set to “Yes”, the socket will be left open, however the server
may close the socket if it is inactive for a long time.
Socket connection timeout (s):
This is the maximum time to wait for a connection to the VXN server to be established.
Transaction timeout (s):
This is the maximum time to wait for a transaction to be completed.
Service discovery timeout (s):
This is the maximum time to wait (after the socket has opened) for a response when querying for
services to access. The IP addresses and ports which of these services are stored within the unit.
When the
fi
rst transaction is performed, a table of all available IP addresses and ports providing
access to the service name is populated by querying the primary and secondary hosts. Subsequent
transactions use the same IP addresses/ports until a connection fails, at which time the failed entry
is removed. When there are none left, the table will be repopulated when the next transaction takes
place.
Retries:
The maximum number of times the unit should attempt to perform the transaction before the
transaction is considered to have failed.
