Compaq 281862-002 manual Direct Connections, Connecting Using a Terminal or Terminal Emulator

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Chapter 7

Direct Connections

In a data-center environment, connecting a modem to each server may be undesirable. For this reason, Integrated Remote Console (IRC) supports configurations whereby access can be obtained through companion hardware, such as a “buddy server” or terminal server. In a “buddy server” configuration, two servers are directly connected to each other’s serial ports. If either server fails, the other server can be used to gain out-of-band access to the failing one.

In a terminal server configuration, a cluster of servers can be connected to a terminal server or terminal concentrator, allowing out-of-band access to any of the servers through either a LAN (telnet) connection, or through a shared modem or bank of modems.

For both configurations, identical concepts apply. The following section entitled “Connecting Using a Terminal or Terminal Emulator” describes the elements necessary to setup a direct-connection to IRC from a generic terminal device. Additional information necessary for terminal server configurations is found later in this chapter in the section entitled “Connecting to a Terminal Server.”

Connecting Using a Terminal or

Terminal Emulator

The following section contains information necessary to connect IRC directly to a terminal or terminal emulator. For simplicity, the terminal or terminal emulator is referred to as the “terminal.”

For proper operation in direct connect mode mode, IRC requires the following:

1.A null-modem cable, with the complete set of modem control signals.

2.A terminal or terminal emulator that supports the complete set of modem control signals, including hardware flow control, proper DTR assertion, and DCD interpretation.

Compaq Integrated Remote Console User Guide