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Command line interface 10
To establish a console connection with the GbE2 Interconnect Switch:
1. Connect the terminal to the console port using the null modem cable.
2. Power on the terminal.
3. Press the Enter key a few times on your terminal to establish the connection.
4. You will be required to enter a password for access to the GbE2 Interconnect Switch. (For more information, see
the “Setting passwords” section in the “First-time configuration” chapter.)
Setting an IP address
To access the GbE2 Interconnect Switch via a Telnet or an SSH connection, you need to have an Internet Protocol (IP)
address set for the switch. The GbE2 Interconnect Switch can get its IP address in one of two ways:
• Using a Bootstrap Protocol (BOOTP) server—By default, the management interface is set up to request its IP
address from a BOOTP server. If you have a BOOTP server on your network, add the Media Access Control
(MAC) address of the GbE2 Interconnect Switch to the BOOTP configuration file located on the BOOTP server.
The MAC address can be found on a small white label on the back panel of the GbE2 Interconnect Switch. The
MAC address can also be found in the System Information menu (See the “System information” section in the
“Information Menu” chapter.) If you are using a DHCP server that also does BOOTP, you do not have to
configure the MAC address.
• Configuring manually—If your network does not support BOOTP, you must configure the management port with
an IP address.
Establishing a Telnet connection
A Telnet connection offers the convenience of accessing the GbE2 Interconnect Switch from any workstation
connected to the network. Telnet provides the same options for user, operator, and administrator access as those
available through the console port. By default, Telnet is enabled on the GbE2 Interconnect Switch. The GbE2
Interconnect Switch supports four concurrent Telnet connections.
Once the IP parameters are configured, you can access the CLI using a Telnet connection. To establish a Telnet
connection with the GbE2 Interconnect Switch, run the Telnet program on your workstation and enter the telnet
command, followed by the GbE2 Interconnect Switch IP address:
telnet <GbE2 Interconnect Switch IP address>
You will then be prompted to enter a password. The password entered determines the access level: administrator,
operator, or user. See the “Accessing the GbE2 Interconnect Switch” section later in this chapter for description of
default passwords.
Establishing an SSH connection
Although a remote network administrator can manage the configuration of a GbE2 Interconnect Switch via Telnet, this
method does not provide a secure connection. The Secure Shell (SSH) protocol enables you to securely log into the
GbE2 Interconnect Switch over the network.
As a secure alternative to using Telnet to manage GbE2 Interconnect Switch configuration, SSH ensures that all data
sent over the network is encrypted and secure. In order to use SSH, you must first configure it on the GbE2
Interconnect Switch. See the “Secure Shell Server configuration” section in the “Configuration Menu” chapter for
information on how to configure SSH.
The GbE2 Interconnect Switch can perform only one session of key/cipher generation at a time. Therefore, an
SSH/Secure Copy (SCP) client will not be able to log in if the GbE2 Interconnect Switch is performing key generation
at that time or if another client has just logged in before this client. Similarly, the system will fail to perform the key
generation if an SSH/SCP client is logging in at that time.
The supported SSH encryption and authentication methods are listed below.
• Server Host Authentication—Client RSA authenticates the GbE2 Interconnect Switch in the beginning of every
connection
• Key Exchange—RSA