Digi TransPort WR31 - Page 564

Configure legacy protocols Configure X.25 parameters
Digi TransPort WR Routers User Guide 564
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 Values Equivalent web parameter
ipx25 n ip_port 0-65535 IP Port
ipx25 n nb_listens 0-software-dependent max Number of Sockets
ipx25 n x25call NUA, NUI or X.25
macro name
X25 Call
ipx25 n pid hex numbers PID
ipx25 n cnf_mode 1=enabled, 0=disabled Confirm Mode
ipx25 n rfc1086_mode 1=enabled, 0=disabled RFC 1086 Mode
ipx25 n iphdr 0=Off
1=On
2=8583 Ascii 4 byte
IP length header