Users Guide

3. Enable SSH or Telnet using iDRAC Web interface or RACADM.
Telnet (port 23)/ SSH (port 22) client <−−> WAN connection <−−> iDRAC
The IPMI-based SOL that uses SSH or Telnet protocol eliminates the need for an additional utility because the serial to
network translation happens within iDRAC. The SSH or Telnet console that you use must be able to interpret and respond
to the data arriving from the serial port of the managed system. The serial port usually attaches to a shell that emulates an
ANSI- or VT100/VT220–terminal. The serial console is automatically redirected to the SSH or Telnet console.
Using SOL from PuTTY on Windows
NOTE: If required, you can change the default SSH or Telnet time-out at iDRAC Settings > Services.
To start IPMI SOL from PuTTY on a Windows management station:
1. Run the following command to connect to iDRAC
putty.exe [-ssh | -telnet] <login name>@<iDRAC-ip-address> <port number>
NOTE: The port number is optional. It is required only when the port number is reassigned.
2. Run the command console com2 or connect to start SOL and boot the managed system.
A SOL session from the management station to the managed system using the SSH or Telnet protocol is opened. To access
the iDRAC command-line console, follow the ESC key sequence. Putty and SOL connection behavior:
● While accessing the managed system through putty during POST, if the Function keys and keypad option on putty is set
to:
○ VT100+ — F2 passes, but F12 cannot pass.
○ ESC[n~ — F12 passes, but F2 cannot pass.
● In Windows, if the Emergency Management System (EMS) console is opened immediately after a host reboot, the Special
Admin Console (SAC) terminal may get corrupted. Quit the SOL session, close the terminal, open another terminal, and
start the SOL session using the same command.
Using SOL from OpenSSH or Telnet on Linux
To start SOL from OpenSSH or Telnet on a Linux management station:
NOTE: If required, you can change the default SSH or Telnet session time-out at iDRAC Settings > Services.
1. Start a shell.
2. Connect to iDRAC using the following command:
● For SSH: ssh <iDRAC-ip-address> -l <login name>
● For Telnet: telnet <iDRAC-ip-address>
NOTE:
If you have changed the port number for the Telnet service from the default (port 23), add the port number to
the end of the Telnet command.
3. Enter one of the following commands at the command prompt to start SOL:
● connect
● console com2
This connects iDRAC to the managed system’s SOL port. Once a SOL session is established, iDRAC command line console
is not available. Follow the escape sequence correctly to open the iDRAC command line console. The escape sequence is
also printed on the screen as soon as a SOL session is connected. When the managed system is off, it takes sometime to
establish the SOL session.
NOTE: You can use console com1 or console com2 to start SOL. Reboot the server to establish the connection.
The console -h com2 command displays the contents of the serial history buffer before waiting for input from the
keyboard or new characters from the serial port.
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Setting up iDRAC communication