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How does a local serial device log in on a console server serial port  The Management Console enables any serial port on the console server to be configured in Terminal Server mode*. From the Serial&Network:Serial Ports you select Terminal Server Mode for the serial port and specify the Terminal Type (vt220, vt102, vt100, Linux or ANSI) to be used. An agetty program will run in the console server monitoring the serial port awaiting an incoming terminal login session. 
Alternately all console server firmware versions allow you to directly configure a getty program (either agetty or mgetty) on any of the serial ports from the command line. The getty will configure the port appropriately and wait for a connection to be made. If you set hardware flow control then an active connection on a serial device is usually indicated by the Data Carrier Detect (DCD) pin on the serial device being raised. When a connection is detected, the getty program issues a login: prompt, and then invokes the login program to handle the actual system login. To manually configure a serial port to run a getty you must first disable portmanager on that serial port and then spawn a getty:
* Refer to the faq 232 for a discussion on the differences between the Terminal Server and Console Server mode of operation. |
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