Owner's Manual

Appendix B. Software Upgrade and Boot Options | 801
B
B. Software Upgrade and Boot Options
This appendix includes the following sections:
• Downloading a New Image on page 801
• Understanding Hitless Upgrade on page 810
• Configuration Changes on page 817
• Using TFTP to Upload the Configuration on page 822
• Using TFTP to Download the Configuration on page 824
• Synchronizing Nodes on Modular Switches on page 825
• Accessing the Bootloader on page 826
• Upgrading the Firmware on page 827
• Displaying the BootROM and Firmware Versions on page 828
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
Understanding Hitless Upgrade on
page 810.