Amer Networks SS2R48G4i V2 - Manual (Page 70)

SS2R24G4i/SS2R48G4i
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authentication or permission-based file access authorization. It ensures correct data transmission by
sending and acknowledging mechanism and retransmission of time-out packets. The advantage of
TFTP over FTP is that it is a simple and low overhead file transfer service.
SS2R24/48G4i switch switch can operate as either FTP/TFTP client or server. When
SS2R24/48G4i switch switch operates as a FTP/TFTP client, configuration files or system files can be
downloaded from the remote FTP/TFTP servers(can be hosts or other switches) without affecting its
normal operation. And file list can also be retrieved from the server in ftp client mode. Of course,
SS2R24/48G4i switch switch can also upload current configuration files or system files to the remote
FTP/TFTP servers(can be hosts or other switches). When SS2R24/48G4i switch switch operates as a
FTP/TFTP server, it can provide file upload and download service for authorized FTP/TFTP clients, as
file list service as FTP server.
Here are some terms frequently used in FTP/TFTP.
ROM Short for EPROM, erasable read-only memory. EPROM is repalced by FLASH memory in
SS2R24/48G4i switch switch.
SDRAM RAM memory in the switch, used for system software operation and configuration sequence
storage.
FLASH Flash memory used to save system file and configuration file
System file including system image file and boot file.
System image file refers to the compressed file for switch hardware driver and software support
program, usually refer to as IMAGE upgrade file. In SS2R24/48G4i switch switch, the system image file
is allowed to save in FLASH only. SS2R24/48G4i switch switch mandates the name of system image
file to be uploaded via FTP in Global Mode to be nos.img, other IMAGE system files will be rejected.
Boot file refers to the file initializes the switch, also referred to as the ROM upgrade file (Large size
file can be compressed as IMAGE file). In SS2R24/48G4i switch switch, the boot file is allowed to save
in ROM only. SS2R24/48G4i switch switch mandates the name of the boot file to be boot.rom.
Configuration file including start up configuration file and running configuration file. The distinction
between start up configuration file and running configuration file can facilitate the backup and update of
the configurations.
Start up configuration file
refers to the configuration sequence used in switch start up.
SS2R24/48G4i switch switch start up configuration file stores in FLASH only, corresponding to the so
called configuration save. To prevent illicit file upload and easier configuration, SS2R24/48G4i switch
switch mandates the name of start up configuration file to be startup-config.
Running configuration file
refers to the running configuration sequence use in the switch. In
SS2R24/48G4i switch switch, the running configuration file stores in the RAM. In the current version,
the running configuration sequence running-config can be saved from the RAM to FLASH by write
command or copy running-config startup-config command, so that the running configuration
sequence becomes the start up configuration file, which is called configuration save. To prevent illicit file
upload and easier configuration, SS2R24/48G4i switch switch mandates the name of running
configuration file to be running-config.
Factory configuration file
The configuration file shipped with SS2R24/48G4i switch switch in the
name of factory-config. Run set default and write, and restart the switch, factory configuration file will
be loaded to overwrite current start up configuration file.
5.5.2.2 FTP/TFTP Configuration