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Direct Connections
Writer: Caroline Juszczak Project: Compaq Integrated Remote Console User Guide Comments: 281862-002
File Name: H-CH07.DOC Last Saved On: 12/21/98 11:08 AM
COMPAQ CONFIDENTIAL - NEED TO KNOW REQUIRED
Cable Requirement
For proper communication, IRC requires a null-modem cable with a complete
set of modem control signals. The exact wiring diagram for this cable is shown
in Appendix B. Cables are occasionally labeled as “null-modem” which do not
conform to this diagram. Check with your cable vendor to ensure that the cable
meets the requirements shown in Appendix B. Cables that differ from this
specification may not function correctly.
Communication Requirements
For proper operation, both IRC and the terminal must be configured and
operate compatibly. The following communication attributes are important for
proper out-of-band access:
■ Managed Server Serial Port Configuration — For a direct-connect
configuration, one of the server’s integrated serial ports is used as the
communication device. Verify that the desired port is enabled and
configured correctly. See “Configuring an external modem or direct
connection” in Chapter 2 for more details. One suggested configuration
is using integrated serial port B configured as COM2, IRQ3.
■ IRC Configuration — Make sure you have configured IRC’s
communication device as direct connect. Also ensure that the COM port
and interrupt settings match the serial port selected above. In direct-
connect configurations, it is recommended that the serial port sharing
options be set to dedicated, making the selected serial port into a
dedicated out-of-band management port. Configure and note the baud
rate and communication settings, as the terminal needs to mirror these
settings to gain access.
■ Terminal Communication Settings — Configure the terminal to match
to communication settings specified for IRC. This includes the
communication baud rate, number of data bits, whether a 7-bit parity
mode is selected, and the number of stop bits. If the terminal is not
configured correctly, you can not obtain a login prompt from IRC.
■ Flow Control — Configure the terminal for hardware flow control. An
improper flow control setting could result in the loss of characters,
causing the terminal to display incomplete or garbled information,
especially during peak video activity.