28Cyclades® ACS 5000 Installation/Administration/User Guide

Connection protocols for serial ports

You can access a server or a device connected to a serial port by using the connection protocol specified for the port. The following table shows the protocols available for the serial ports.

Table 3.3: Available Serial Port Protocols

Connection Type

Protocol

Console Access Server (CAS)

Telnet, ssh, Telnet&ssh, Raw

Terminal Server (TS)

Telnet, sshv1, sshv2, Local Terminal, Raw Socket

Dial-up

PPP-No Auth., PPP, SLIP, CSLIP

Other

Power Management, Bi-directional Telnet

TCP port numbers for serial ports

The TCP port numbers by default start at 7001 for serial port 1 and increment up to the number of serial ports on your console server. The console server administrator may change the default port numbers if needed.

To use Telnet to connect to a device through a serial port:

For this procedure you need the hostname of the console server or its IP address and the TCP port number for the serial port to which the device is connected.

To use Telnet in a shell, enter the following command: telnet <hostname IP_address> TCP_port_number

To close a Telnet session:

Enter the Telnet hotkey defined for the client. The default is Ctrl and q to quit.

To use SSH to connect to a device through a serial port:

For this procedure, you need the username configured to access the serial port, the TCP port number and the hostname of the console server or its IP address.

To use SSH in a shell, enter the following command:

SSH - # ssh -l username:TCP_port_number <console_server_IP_addressor the hostname>

To close an SSH session:

Enter the hotkey defined for the SSH client followed by a period. The default is ~.

NOTE: Make sure you enter the escape character followed by a period at the beginning of a line to close the SSH session.

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Avocent ACS 5000 manual Connection protocols for serial ports