Ftp/Tftp Upgrade - Planet Networking & Communication WGSW-50040 Configuration Manual

Step 8:
After successful upgrade, execute run or reboot command in BootROM mode to return to CLI configuration
interface.
[Boot]: run（or reboot）
Other commands in BootROM mode
1. DIR command
Used to list existing files in the FLASH .
[Boot]: dir
boot.rom 327,440 1900-01-01 00:00:00 --SH
boot.conf 83 1900-01-01 00:00:00 --SH
nos.img 2,431,631 1980-01-01 00:21:34 ----
startup-config 2,922 1980-01-01 00:09:14 ----
temp.img 2,431,631 1980-01-01 00:00:32 ----
2. CONFIG RUN command
Used to set the IMAGE file to run upon system start-up, and the configuration file to run upon configuration
recovery.
[Boot]: config run
Boot File: [nos.img] nos.img
Config File: [boot.conf]

4.5.3 FTP/TFTP Upgrade

4.5.3.1 Introduction to FTP/TFTP
FTP(File Transfer Protocol)/TFTP(Trivial File Transfer Protocol) are both file transfer protocols that belonging
to fourth layer(application layer) of the TCP/IP protocol stack, used for transferring files between hosts, hosts
and switches. Both of them transfer files in a client-server model. Their differences are listed below.
FTP builds upon TCP to provide reliable connection-oriented data stream transfer service. However, it does
not provide file access authorization and uses simple authentication mechanism (transfers username and
password in plain text for authentication). When using FTP to transfer files, two connections need to be
established between the client and the server: a management connection and a data connection. A transfer
request should be sent by the FTP client to establish management connection on port 21 in the server, and
negotiate a data connection through the management connection.
There are two types of data connections: active connection and passive connection.
In active connection, the client transmits its address and port number for data transmission to the server, the
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