Upgrading the BootROM

The ExtremeSwitching series switches have a two-stage bootROM. The first stage, called bootstrap, does basic initialization of the switch processor and loads one of two second-stage bootloaders (called primary and secondary).

If the switch does not boot properly, both the bootstrap and the bootloader allow you to access the boot options using the CLI.

If necessary, the bootloader can be updated after the switch has booted, using TFTP. You can upgrade the bootROM from a TFTP server on the network after the switch has booted and only when asked to do so by an Extreme Networks technical representative. For information about loading an image to a TFTP server and verifying which virtual router connects to your TFTP server, see Installing a Core Image.