Ftp Method; Tftp Method - Huawei netengine80e Configuration Manual

HUAWEI NetEngine80E/40E Router
Configuration Guide - Basic Configurations

8.1.2 FTP Method

To access files on a remote FTP server, you can establish a connection between the router that
you have logged in to and the remote FTP server by using FTP.
FTP can transmit files between hosts, and provide users with common FTP commands to simply
manage file system. To be specific, through the FTP client program outside the router, users can
upload or download the files and access the directories on the router; through the FTP client
program inside the router, users can transfer files to the FTP servers of other devices.
FTP can transmit files between local and remote hosts, and is widely used for version upgrade,
log downloading, file transmission, and configuration saving.

8.1.3 TFTP Method

On the network, if a client communicates with a server in a comparatively simple interaction
environment, you can enable TFTP services on the router that functions as a client to access files
on the TFTP server.
Trivial File Transfer Protocol (TFTP) is a simple file transfer protocol.
Compared with FTP, TFTP does not have a complex interactive access interface and
authentication control. TFTP is applicable in an environment where there is no complex
interaction between the client and the server. For example, TFTP is used to obtain the memory
image of the system when the system starts up.
TFTP is implemented based on the User Datagram Protocol (UDP).
The client initiates the TFTP transfer. To download files, the client sends a read request packet
to the TFTP server, receives packets from the server, and sends acknowledgement to the server.
To upload files, the client sends a write request packet to the TFTP server, sends packets to the
server, and receives acknowledgement from the server.
Issue 02 (2011-09-10)
<RouterA>
NOTE
If the network disconnects, the shortcut keys become invalid. The instruction cannot be sent to the
server.
<Ctrl_T>: The client interrupts the connection.
When the server fails and the client is unaware of the failure, the server does not respond
to the input of the client. In this case, if you press Ctrl_T, the Telnet client interrupts the
connection actively and quits the Telnet connection.
For example:
<RouterC>
Press <Ctrl_T> to directly interrupt the connection and quit Telnet connection.
<RouterA>
CAUTION
When the number of remote login users reaches to the maximum number of VTY user
interfaces, the system prompts that all user interfaces are in use and you cannot use Telnet
to log in.
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
8 Accessing Another Device
155