3Com 4210 PWR Configuration Manual page 53

Figure 15 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 <4210>) 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
3Com series Ethernet switch can accommodate up to five Telnet connections at
same time.
6 After successfully Telnetting to the 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.
n
A Telnet connection is terminated if you delete or modify the IP address of the
■
VLAN interface in the Telnet session.
By default, commands of level 0 are available to Telnet users authenticated by
■
password. Refer to "Command Hierarchy" on page 11 and "CLI Views" on
page 14 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 16, 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 configure it.
Figure 16 Network diagram for Telnetting to another switch from the current switch
PC
1 Perform Telnet-related configuration on the switch operating as the Telnet server
using the instructions earlier in this chapter.
2 Telnet to the switch operating as the Telnet client.
3 Execute the following command on the switch operating as the Telnet client:
<4210> telnet xxxx
Telnet Configuration with Authentication Mode Being Scheme
Telnet Client Telnet Server
51