Chapter 6. Running A Serial Over Lan Session - IBM eServer BladeCenter JS20 Installation And User Manual

Chapter 6. Running a Serial Over LAN session

The IBM Eserver BladeCenter management-module command-line interface
provides a convenient method for entering commands that manage and monitor
BladeCenter components. The blade server does not support a direct connection to
a monitor, keyboard, or mouse. Therefore, to enable communication between the
blade server and these devices, you must first configure the SOL feature on the
blade server to establish an SOL connection as described in Chapter 5,
"Configuring your blade server," on page 41 and then start an SOL session as
described in this chapter.
This chapter contains the following information about running an SOL session:
v Starting the command-line interface
v Establishing a Telnet connection
v Establishing a Secure Shell (SSH) connection
v Starting an SOL session
v Ending an SOL session
In the BladeCenter environment, the integrated system management processor
(ISMP) and network interface card (NIC) on each blade server route the serial data
from the blade server serial communications port to the network infrastructure of the
BladeCenter unit, including an Ethernet compatible I/O module that supports SOL
communication. Configuration of BladeCenter components for SOL operation is
done through the BladeCenter management module (see Chapter 5, "Configuring
your blade server," on page 41). The management module also acts as a proxy in
the network infrastructure to couple a client running a Telnet session with the
management module to an SOL session running on a blade server, enabling the
Telnet client to interact with the serial port of the blade server over the network.
Because all SOL traffic is controlled by and routed through the management
module, administrators can segregate the management traffic for the BladeCenter
unit from the data traffic of the blade servers.
To start an SOL connection with a blade server, you must first start a Telnet
command-line interface session with the management module. When this Telnet
command-line interface session is running, you can start a remote console SOL
session with any blade server in the BladeCenter unit that is set up and enabled for
SOL operation. You can have as many as 14 simultaneous SOL sessions active
(one for each of up to 14 blade servers) with six additional command-line interface
sessions available for BladeCenter unit management. If security is a concern, you
can use SSH sessions to establish secure Telnet command-line interface sessions
with the BladeCenter management module before starting an SOL console redirect
session with a blade server.
The most recent versions of all BladeCenter documentation are available from the
IBM Web site. Complete the following steps to check for updated BladeCenter
documentation and technical updates:
1. Go to http://www.ibm.com/pc/support/.
2. In the Learn section, click Online publications.
3. On the "Online publications" page, in the Brand field, select Servers.
4. In the Family field, select BladeCenter.
5. Click Continue.
© Copyright IBM Corp. 2004
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