Logging In To Other Devices By Using Telnet; Establishing The Configuration Task - Huawei AR2200 Series Configuration Manual

Huawei AR2200 Series Enterprise Routers
Configuration Guide - Basic Configuration

8.2 Logging in to Other Devices by Using Telnet

On the network, a large number of routers need to be managed and maintained. Not all routers,
however, can be connected to terminal PCs. In addition, there are not reachable routes between
some routers and terminal PCs. To manage and maintain routers remotely, you can log in to
them by using Telnet from a device that you have logged in to.

8.2.1 Establishing the Configuration Task

Before establishing the configuration task of logging in to another router from the router that
you have logged in to, familiarize yourself with the applicable environment, complete the pre-
configuration tasks, and obtain the required data. This can help you complete the configuration
task quickly and accurately.
Applicable Environment
Figure 8-5 Networking diagram for accessing another device from the router that you have
logged in to
As shown in
manage Router B remotely. This is because there is no reachable route between the PC and
Router B. To manage Router B remotely, you can log in to it from Router A by using Telnet.
In this situation, Router A functions as a Telnet client, and Router B that you attempt to log in
to functions as a server.
Pre-configuration Tasks
Before logging in to another device on the network by using Telnet, complete the following
tasks:
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Issue 02 (2011-10-15)
logging in to the server through SFTP, the client must be configured with the period of
sending the keepalive packet and the number of times for no reply restriction on the server
if no packet is received by the client. If a client does not receive any packet within specified
period, the client sends a keepalive packet to the server. If the number of times of no reply
restriction exceeds the specified number, the client takes the initiative to release the
connection.
Network
PC
Figure 8-5, you can log in to Router A from a PC by using Telnet, but cannot
Ensuring that the router that you attempt to log in to works properly, and enabling Telnet
services on the device
Ensuring that there is a reachable route between the router that you have logged into and
the router that you attempt to log in to
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RouterA RouterB
8 Accessing Another Device
Network
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