Starting the command-line interface

Access the management-module command-line interface from a client system by establishing a Telnet connection to the IP address of the management module or by establishing a Secure Shell (SSH) connection.

For the advanced management module, you can also access the command-line interface using a serial connection. You can establish up to 20 separate Telnet, serial, or SSH sessions to the BladeCenter® management module, giving you the ability to have 20 command-line interface sessions active at the same time.

Although a remote network administrator can access the management-module command-line interface through Telnet, this method does not provide a secure connection. As a secure alternative to using Telnet to access the command-line interface, use a serial or SSH connection. SSH ensures that all data that is sent over the network is encrypted and secure.

The following SSH clients are available. Although some SSH clients have been tested, support or nonsupport of any particular SSH client is not implied.

The following table shows the types of encryption algorithms that are supported, depending on the client software version that is being used.

Algorithm SSH version 2.0 clients
Public key exchange Diffie-Hellman-group 1-sha-1
Host key type DSA - 2048-bit
Bulk cipher algorithms 3-des-cbc or blowfish-cbc
MAC algorithms Hmac-sha1

The following topics describe how to connect your system to the management module to perform initial configuration of the BladeCenter unit. The management module has the following default settings:

Note: The advanced management module does not have a fixed static IPv6 IP address by default. For initial access to the advanced management module in an IPv6 environment, users can either use the IPv4 IP address or the IPv6 link-local address. See IPv6 addressing for initial connection for information about determining IPv6 addressing for initial connection.

For IPv4, the system that you are connecting to the management module must be configured to operate on the same subnet as the BladeCenter management module. If the IP address of the management module is outside of your local domain, you must change the Internet protocol properties on the system that you are connecting.

Note: For advanced management modules, the available password options depend on the password options that are configured for the BladeCenter unit.