Compaq 281862-002 manual Connection problems using a direct- connection, 10Troubleshooting

C-10Troubleshooting

Connection problems using a direct- connection

Cannot obtain a login prompt using a direct-connection

After opening a direct serial connection to IRC, a login prompt does not appear on the management console after three carriage returns are entered.

Explanation: In direct connect mode, IRC waits for three carriage returns to invoke the login prompt after the data carrier detect (DCD) signal is driven active by the terminal or terminal server. Failure to obtain a login prompt either means that the carriage returns are not being received correctly by IRC, or the data carrier detect (DCD) signal is inactive.

Solution: Check the following:

■Make sure you are using the appropriate null-modem cable as described in Appendix B. Unfortunately, many cables are labeled as “null- modem” but do not contain the full complement of necessary control signals. IRC requires a full null-modem cable as shown in Appendix B to operate correctly.

■Make sure that the communication settings match between the terminal or terminal server and IRC. These include baud rate, data bits, stop bits and parity settings.

■Make sure that the terminal or terminal server is configured for hardware flow control.

■Make sure that the terminal or terminal server is configured to assert DTR when a connection is opened and de-assert DTR when a connection is closed.

■If you are using HyperTerminal to establish the connection, make sure that your IRC firmware is 1.41 or greater. Obtain the latest system ROM upgrade for your server to upgrade the IRC firmware.