SNR S2989G-48TX-DC — руководство по обновлению системы и загрузки для коммутаторов [47/553]

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S2989G-24TX Operation Manual

Chapter

Basic

Management

Configuration

1-32

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 name of the boot file to be boot.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.

1.2.5.2 BootROM Upgrade

There is one method for BootROM upgrade: USB upgrade which can be configured

at BootROM command.

Console cable

connection

Figure 1-14 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 of the switch, and the USB port of the

console is connected to the console port of the switch through a USB-to-RJ45 serial cable.

At the same time, a FAT-format USB containing a boot file to be upgraded is inserted into

the switch USB port.

Note: In BootROM monitoring mode, USB hot plugging is not supported.

Step 2:

Press “ctrl+b” on switch boot up until the switch enters BootROM monitor mode. The

operation result is shown below:

[Boot]: