SNR S2940-8G-v2 Switch Configuration Guide
Basic Switch Configuration
2.2 Telnet Management
2.2.1 Telnet
Introduction to Telnet
Telnet is a simple remote terminal protocol for remote login. Using Telnet, the user can login to a
remote host with its IP address of hostname from his own workstation. Telnet can send the user's
keystrokes to the remote host and send the remote host output to the user's screen through TCP
connection. This is a transparent service, as to the user, the keyboard and monitor seems to be
connected to the remote host directly.
Telnet employs the Client-Server mode, the local system is the Telnet client and the remote
host is the Telnet server. Switch can be either the Telnet Server or the Telnet client.
When switch is used as the Telnet server, the user can use the Telnet client program included
in Windows or the other operation systems to login to switch, as described earlier in the In-band
management section. As a Telnet server, switch allows up to 5 telnet client TCP connections.
And as Telnet client, using telnet command under Admin Mode allows the user to login to the
other remote hosts. Switch can only establish TCP connection to one remote host. If a connection
to another remote host is desired, the current TCP connection must be dropped.
Telnet Configuration Task List
1. Configure Telnet Server
2. Telnet to a remote host from the switch.
1. Configure Telnet Server
Command Explanation
Global Mode
telnet-server enable
no telnet-server enable
Enable the Telnet server function in the switch: the no com-
mand disables the Telnet function.
username <user-name> [privi-
lege
<privilege>]
[password
[0
|
no username <username>
Configure user name and password of the telnet. The no
form command deletes the telnet user authorization.
aaa authorization config-
commands
no aaa authorization config-
commands
Enable command authorization function for the login user
with VTY (login with Telnet and SSH). The no command dis-
ables this function. Only enabling this command and config-
uring command authorization manner, it will request to au-
thorize when executing some command.
authentication securityip <ip-
addr>
no authentication securityip <ip-
addr>
Configure the secure IP address to login to the switch
through Telnet: the no command deletes the authorized Tel-
net secure address.
authentication securityipv6
<ipv6-addr>
no authentication securityipv6
<ipv6-addr>
Configure IPv6 security address to login to the switch
through Telnet; the no command deletes the authorized Tel-
net security address.
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