User's Manual

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4.5 Switch Upgrade
Switch provides two ways for switch upgrade: BootROM upgrade and the TFTP/FTP upgrade under Shell.
4.5.1 Switch System Files
The system files includes system image file and boot file. The updating of the switch is to update the two files
by overwrite the old files with the new ones.
The system image files refers to the compressed files of the switch hardware drivers, and software support
program, etc, namely what we usually call the IMG update file. The IMG file can only be saved in the FLASH
with a defined name of nos.img
The boot file is for initiating the switch, namely what we usually call the ROM update file (It can be
compressed into IMG file if it is of large size). In switch, the boot file is allowed to save in ROM only. Switch
mandates the path and the name of two boot files to be flash:/boot.rom and flash:/config.rom.
The update method of the system image file and the boot file is the same. The switch supplies the user with
two modes of updating: 1. BootROM mode; 2. TFTP and FTP update at Shell mode. This two update method
will be explained in details in following two sections.
4.5.2 BootROM Upgrade
There are two methods for BootROM upgrade: TFTP and FTP, which can be selected at BootROM command
settings.
Figure 4-2 Typical topology for switch upgrade in BootROM mode
The upgrade procedures are listed below:
Step 1:
As shown in the figure, a PC is used as the console for the switch. A console cable is used to connect PC to
the management port on the switch. The PC should have FTP/TFTP server software installed and has the
image file required for the upgrade.
Step 2:
cable
connection
Console cable
connection