Digi TransPort WR21 - Configure NUA to Interface Mappings

Configuring legacy protocols Configure Protocol Switch software
Digi TransPort® Routers User Guide
677
Configure NUA to interface mappings
ÉWeb
1. Go to Configuration > Network >Protocol Switch > NUA to InterfaceMappings.
2. Enter NUAto interface mappings. The NUA to InterfaceMappings page contains a table to
enter a series of X.25 NUA or NUI values along with IP addresses/Ports to which they should be
mapped, if you need to override the default settings in the Configuration > Network > Legacy
Protocols > X.25 > NUA/NUI Interface Mappings page.
If, in the Protocol Switch configuration, you had configured the router to switch from LABP 0
to TCP, the IP Address and Port values would normally be determined from the XOT Remote
IP address and IP stream port parameters. However, having set up the NUA/NUI to IP
addresses table as shown in the example above, if an X.25 call with NUA of value 222 is
received on LAPB 0, it is switched onto a TCP socket using IP address 1.2.3.4 on port 45
instead of the settings configured on the Configuration > Network > Legacy Protocols > X.25 >
NUA/NUI Interface Mappings page.
Similarly, NUIs can also be matched. In this example, a call with NUI of value test is switched
onto a TCP socket using IP address 100.100.100.1 on port 678.
All three comparison fields, NUA, NUI and Call Data can use the wildcard matching characters ?
and *. In the example shown above, when an X.25 call is received with either the NUA having
1234 followed by any 2 digits or a call being received with call user data with any 4 characters
followed by aa, the call is switched to a TCP socket on address 100.100.100.52 on port 4001.
When a connection has been successfully established and data is being switched from the X.25
call to the socket and from the socket to the X.25 connection, it can be terminated by either
the socket closing or the X.25 call clearing.
If the connection terminates because of an incoming X25 CALL CLEAR packet, the switch
terminates the socket connection. If the connection terminates because the socket is closed,
the switch clears the X.25 call by transmitting a CALL CLEAR packet.
3. Click Add to add each NUAto interface mapping.
4. Click Apply.
Command line
Command Instance Parameter Values Equivalent web parameter
nuaip 0-255 nua 0-65536 NUA