3Com 4200G 12-Port Configuration Manual page 545

Configuration procedure
In public key authentication, you can use either RSA or DSA public key. Here takes the DSA public key
as an example.
Configure Switch B
# Create a VLAN interface on the switch and assign an IP address, which the SSH client will use as the
destination for SSH connection.
<SwitchB> system-view
[SwitchB] interface vlan-interface 1
[SwitchB-Vlan-interface1] ip address 10.165.87.136 255.255.255.0
[SwitchB-Vlan-interface1] quit
Generating the RSA and DSA key pairs on the server is prerequisite to SSH login.
# Generate RSA and DSA key pairs.
[SwitchB] public-key local create rsa
[SwitchB] public-key local create dsa
# Set the authentication mode for the user interfaces to AAA.
[SwitchB] user-interface vty 0 4
[SwitchB-ui-vty0-4] authentication-mode scheme
# Enable the user interfaces to support SSH.
[SwitchB-ui-vty0-4] protocol inbound ssh
# Set the user command privilege level to 3.
[SwitchB-ui-vty0-4] user privilege level 3
[SwitchB-ui-vty0-4] quit
# Specify the authentication type of user client001 as publickey.
[SwitchB] ssh user client001 authentication-type publickey
Before doing the following steps, you must first generate a DSA public key pair on the client and save
the key pair in a file named Switch001, and then upload the file to the SSH server through FTP or TFTP.
For details, refer to "Configure Switch A".
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