H3C Technologies H3C S5120 Series Switches - Manual (Page 56)

3-3
Figure 3-2 Launch Telnet
Step 5: Enter the password when the Telnet window displays “Login authentication” and prompts for
login password. The CLI prompt (such as <H3C>) appears if the password is correct. If all VTY user
interfaces of the switch are in use, you will fail to establish the connection and receive the message that
says “All user interfaces are used, please try later!”. A H3C series Ethernet switch can accommodate up
to 16 Telnet connections at same time.
Step 6: After successfully Telnetting to a switch, you can configure the switch or display the information
about the switch by executing corresponding commands. You can also type ? at any time for help. Refer
to the following chapters for the information about the commands.
z A Telnet connection will be terminated if you delete or modify the IP address of the VLAN interface
in the Telnet session.
z By default, commands of level 0 are available to Telnet users authenticated by password. Refer to
Basic System Configuration for information about command hierarchy.
Telnetting to Another Switch from the Current Switch
You can Telnet to another switch from the current switch. In this case, the current switch operates as the
client, and the other operates as the server. If the interconnected Ethernet ports of the two switches are
in the same LAN segment, make sure the IP addresses of the two management VLAN interfaces to
which the two Ethernet ports belong to are of the same network segment, or the route between the two
VLAN interfaces is available.
As shown in Figure 3-3 , after Telnetting to a switch (labeled as Telnet client), you can Telnet to another
switch (labeled as Telnet server) by executing the telnet command and then to configure the later.
Figure 3-3 Network diagram for Telnetting to another switch from the current switch
Step 1: Configure the user name and password for Telnet on the switch operating as the Telnet server.
Refer to section Telnet Configuration with Authentication Mode Being None ”, section Telnet
Configuration with Authentication Mode Being Password , and Telnet Configuration with Authentication