Starting the command-line interface
Access the CMM command-line interface from a client system through a Telnet, Secure Shell (SSH), or serial connection.
You can access the command-line interface through an Ethernet connection by establishing a Telnet session with the IP address of the CMM or by establishing a Secure Shell (SSH) session. You can also access the command-line interface by using a serial connection. You can establish up to 20 separate Telnet, serial, or SSH sessions to the CMM, giving you the ability to have 20 active command-line interface sessions at the same time.
Although a remote network administrator can access the CMM 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. You cannot access the CMM CLI through Telnet while using the Secure chassis security policy setting.
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 SSH clients that are distributed with operating systems such as Linux, AIX, and UNIX (see your operating-system documentation for information). The SSH client of Red Hat Linux 8.0 Professional was used to test the command-line interface.
- The SSH client of cygwin (see the "Cygwin project" website for information).
- Putty (see the "PuTTY: A Free Telnet/SSH Client" website for information).
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 CMM to perform initial configuration of the Flex System chassis. The CMM has the following default settings.
- IPv4 IP address: 192.168.70.100 (primary and secondary CMM)
- IPv4 Subnet: 255.255.255.0
- User ID: USERID (all capital letters)
- Password: PASSW0RD (note the number zero, not the letter O, in PASSW0RD)
For IPv4, the system that you are connecting to the CMM must be configured to operate on the same subnet as the CMM. If the IP address of the CMM is outside of your local domain, you must change the Internet Protocol properties on the system that you are connecting.