Digi TransPort WR31 User Manual page 564

Configure legacy protocols
Confirm Mode
When confirm mode is set to On, then the incoming TCP socket is not successfully connected
until the corresponding outgoing call has been connected. The incoming TCP socket triggers the
corresponding outgoing call either to a local PAD instance or to whatever is configured. The
effect of this mode is that the socket will fail if the outbound call fails and so may be useful in
backup scenarios. In addition it will ensure no data is sent into a "black hole". (When this setting
is not enabled, data that is sent on the inbound TCP connection before the outbound
connection has been successful can be lost.)
RFC 1086 Mode:
RFC 1086 specifies a mode of operation in which the IP socket answers and then with a simple
protocol in the socket identifies the X.25 address and other X.25 call setup parameters to use.
Then when the X.25 call parameters have been identified the X.25 call is made and if successful
then data is then switched between the X.25 call and the IP socket. The protocol selects whether
incoming or outgoing support is required.
IP Length Header
When IP length header is On, the IP length indicator field is inserted at the start of each packet.
When set to 8583 Ascii 4 byte, the IP length header conforms to the ISO 8583 format.
In the example above, 3 IP sockets will listen for an incoming connection on IP Port 2004. Once
connected each socket makes an X.25 Call to jollyroger. The router recognizes that jollyroger is
a pre-defined macro (as illustrated below), and translates it into an X.25 Call to address 32423
with the string x25 data included as data in the call. The outgoing X.25 call(s) are made over
whichever interface is specified by the Switch from XOT(TCP) to parameter on the
Configuration > Network > Protocol Switch page.
Add button
Adds the IP to X.25 call mapping to the X.25 configuration.
Related CLI commands
Entity Instance Parameter
ipx25 n ip_port
ipx25 n nb_listens
ipx25 n x25call
ipx25 n pid
ipx25 n cnf_mode
ipx25 n rfc1086_mode
ipx25 n iphdr
Digi TransPort WR Routers User Guide
Values
0-65535
0-software-dependent max
NUA, NUI or X.25
macro name
hex numbers
1=enabled, 0=disabled
1=enabled, 0=disabled
0=Off
1=On
2=8583 Ascii 4 byte
Configure X.25 parameters
Equivalent web parameter
IP Port
Number of Sockets
X25 Call
PID
Confirm Mode
RFC 1086 Mode
IP length header
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