Specifications

Configuring Asynchronous Serial Traffic over UDP
How to Configure Asynchronous Serial Traffic over UDP
DC-46
Cisco IOS Dial Technologies Configuration Guide
Enabling UDPTN
There are two methods of enabling UDPTN. You can manually enable UDPTN when you want to begin
transmission or reception, or you can configure the router to automatically enable UDPTN when a
connection is made to the line.
To manually enable UDPTN and begin UDPTN transmission or reception, use the following command
in EXEC mode:
To automatically enable UDPTN when a connection is made to the line, use the following commands
beginning in global configuration mode:
Verifying UDPTN Traffic
To verify that UDPTN is enabled correctly, perform the following steps:
Step 1 Enable UDPTN debugging by using the debug udptn EXEC command.
Step 2 Enable UDPTN by using the udptn ip-address EXEC command, and then observe the debug output.
The following debug output shows a UDPTN session being successfully established and then
disconnected.
Router# debug udptn
Router# udptn 172.16.1.1
Trying 172.16.1.1 ... Open
*Mar 1 00:10:15.191:udptn0:adding multicast group.
*Mar 1 00:10:15.195:udptn0:open to 172.16.1.1:57 Loopback0jjaassdd
*Mar 1 00:10:18.083:udptn0:output packet w 1 bytes
*Mar 1 00:10:18.087:udptn0:Input packet w 1 bytes
Router# disconnect
Closing connection to 172.16.1.1 [confirm] y
Router#
Command Purpose
Router# udptn ip-address [ port ] [/transmit] [/receive]
Enables UDPTN to the specified IP address (optionally,
using the specified port). Use the /transmit or /receive
keyword if the router will only be sending or receiving
UDPTN.
Command Purpose
Step 1
Router(config)# line line-number
Enters line configuration mode for the line number
specified.
Step 2
Router(config-line)# autocommand udptn ip-address
[ port ] [/transmit] [/receive]
Enables UDPTN automatically when a connection is
made to the line (optionally, using the specified port).
Use the /transmit or /receive keyword if the router will
only be sending or receiving UDPTN.