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H3C Technologies H3C S3100 Series Switches User Manual

Page 69

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Operation Manual – Login

H3C S3100-52P Ethernet Switch

Chapter 3 Logging in through Telnet

3-18

Note:

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. Refer to section 1.2 “Command Hierarchy/Command View” in CLI
module for information about command hierarchy.

3.5.2 Telneting 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 3-8, after Telneting 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.

Telnet client

PC

Telnet server

Telnet client

PC

Telnet server

h

Figure 3-8

Network diagram for Telneting to another switch from the current switc

1) Perform Telnet-related configuration on the switch operating as the Telnet server.

Refer to section 3.2 "Telnet Configuration with Authentication Mode Being None”,
section 3.3 “Telnet Configuration with Authentication Mode Being Password”, and
section 3.4 “Telnet Configuration with Authentication Mode Being Scheme” for
more.

2) Telnet to the switch operating as the Telnet client.
3) Execute the following command on the switch operating as the Telnet client:

telnet xxxx

Where xxxx is the IP address or the host name of the switch operating as the Telnet
server. You can use the ip host to assign a host name to a switch.
4) Enter the password. If the password is correct, the CLI prompt (such as )

appears. 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!”.