3-13
Figure 3-7 Launch Telnet
5) If the password authentication mode is specified, enter the password when the Telnet window
displays “Login authentication” and prompts for login password. The CLI prompt (such as
<System_LSW>) appears if the password is correct. If all VTY user interfaces of the switching
engine are in use, you will fail to establish the connection and see the message “All user interfaces
are used, please try later!” The switching engine of the device can accommodate up to five Telnet
connections at same time.
6) After successfully Telnetting to the switching engine, you can configure the switching engine or
display the information about the switching engine by executing corresponding commands. You
can also type ? at any time for help. Refer to the relevant parts in this manual for the information
about the commands.
z A Telnet connection is 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. For the
command hierarchy and command views, refer to CLI Operation in this manual.
You can Telnet to the switching engine from the access control engine. In this case, the access control
engine operates as the client, and the switching engine operates as the server. If the interconnected
Ethernet ports of the two engines are in the same LAN segment, make sure the IP addresses of the two
management VLAN interfaces to which the two Ethernet ports belong are of the same network segment,
or the route between the two VLAN interfaces is available.
As shown in Figure 3-8, after Telnetting to the access control engine (labeled as Telnet client), you can
Telnet to the switching engine (labeled as Telnet server) by executing the telnet command and then
configure it.
Figure 3-8 Network diagram for Telnetting to the switching engine from the access control engine