SNR S2940-8G-v2 Switch Configuration Guide
Basic Switch Configuration
2. Telnet to a remote host from the switch
Command Explanation
Admin Mode
telnet [vrf <vrf-name>] { <ip-addr> | <ipv6-
addr>
|
host
<hostname>
}
[<port>]
Login to a remote host with the Telnet client in-
cluded in the switch.
2.2.2 SSH
Introduction to SSH
SSH (Secure Shell) is a protocol which ensures a secure remote access connection to network
devices. It is based on the reliable TCP/IP protocol. By conducting the mechanism such as
key distribution, authentication and encryption between SSH server and SSH client, a secure
connection is established. The information transferred on this connection is protected from being
intercepted and decrypted. The switch meets the requirements of SSH2.0. It supports SSH2.0
client software such as SSH Secure Client and putty. Users can run the above software to manage
the switch remotely.
The switch presently supports RSA authentication, 3DES cryptography protocol and SSH user
password authentication etc.
SSH Server Configuration Task List
Command Explanation
Global Mode
ssh-server enable
no ssh-server enable
Enable SSH function on the switch; the no command dis-
ables SSH function.
username <username> [privi-
lege
<privilege>]
[password
[0
|
no username <username>
Configure the username and password of SSH client soft-
ware for logging on the switch; the no command deletes the
username.
ssh-server timeout <timeout>
no ssh-server timeout
Configure timeout value for SSH authentication; the no com-
mand restores the default timeout value for SSH authentica-
tion.
ssh-server authentication-retires
<authentication-retires>
no ssh-server authentication-
retries
Configure the number of times for retrying SSH authentica-
tion; the no command restores the default number of times
for retrying SSH authentication.
ssh-server host-key create rsa
modulus <moduls>
Generate the new RSA host key on the SSH server.
Admin Mode
terminal monitor
terminal no monitor
Display SSH debug information on the SSH client side; the
no command stops displaying SSH debug information on
the SSH client side.
show crypto key Show the secret key of ssh.
crypto key clear rsa Clear the secret key of ssh.
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