Chapter 6. Running A Serial Over Lan Session - IBM JS20 - BladeCenter - 8842 Maintenance And Troubleshooting Manual
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Also See for JS20 - BladeCenter - 8842:
- Configuration and options manual (548 pages) ,
- Installation and user manual (132 pages) ,
- Installation and user manual (146 pages)
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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 and then start an SOL session as
described in this chapter.
Note: Detailed information about configuring the SOL feature is described in the
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 controller (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 the BladeCenter JS20
Installation and User's Guide on the IBM BladeCenter Documentation CD). 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, allowing 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, it is possible for administrators to
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 installed in the BladeCenter unit that is set up and
enabled for SOL operation. You can establish as many as 20 separate Telnet
sessions with the BladeCenter management module, giving you the ability to have
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, secure shell (SSH) sessions can be used 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/support/.
© Copyright IBM Corp. 2003
BladeCenter JS20 Installation and User's Guide on the IBM BladeCenter
Documentation CD.
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