Recovery Strategy; Prevention Strategy - IBM pSeries 670 Service Manual

Recovery Strategy

The recovery strategy consists of making two calls to establish a remote session. This solution is the
easiest to implement and allows more freedom for configuring your server's serial ports.
To set up a remote terminal session, dial into the service processor and start the system. After the
operating system is loaded and initialized, the connection will be dropped. At this point, call the server
back and the operating system will answer and offer you the login prompt.

Prevention Strategy

The disconnect is caused by the operating system when it initializes the Primary Console. The tests listed
in "Transfer of a Modem Session" on page 976 are conducted with the remote terminal selected as the
primary console to manifest the modem's response to DTR transitions.
v If a local ASCII terminal or a graphics console is to be a permanent part of your server, then make one
of them the primary console. Your remote terminal will no longer experience the connection loss.
v If a local console is not a permanent part of your server, you can still assign either the unused graphics
console or the unused serial port as the primary console. This gives you the desired seamless
connection at your remote terminal.If you choose to use the unused serial port as the primary console,
some initialization traffic will be sent to any serial device attached to that port. As a result, that serial
device's connection and function could be affected. These impacts may make that port unattractive for
devices other than a temporary local ASCII terminal.
Appendix D. Modem Configurations
977