Netgear XCM8806 - 8800 SERIES 6-SLOT CHASSIS SWITCH ユーザーズマニュアル

B.   

Software Upgrade and Boot Options

This appendix includes the following sections:

•     Downloading a New Image 

•     Understanding Hitless Upgrade 

•     Configuration Changes 

•     Using TFTP to Upload the Configuration 

•     Using TFTP to Download the Configuration 

•     Synchronizing Nodes on Modular Switches 

•     Accessing the Bootloader 

•     Upgrading the Firmware 

•     Displaying the BootROM and Firmware Versions 

Downloading a New Image 

The core image file contains the executable code that runs on the switch and is preinstalled at 
the factory. As new versions of this image are released, you should upgrade the software 
running on your system. Modular software packages enhance the functionality of the XCM8800 
core image currently running on your switch. Modular software packages are not preinstalled at 
the factory.

On NETGEAR 8800 series switches with two MSMs installed, you can upgrade the images 
without taking the switch out of service. Known as a hitless upgrade, this method of downloading 
and installing a new image minimizes network interruption, reduces the amount of traffic lost, 
and maintains switch operation. For more information, see 

page 810.