HP 7500/E7900 Switches and Fabric Modules - 7500-CMW520-R6708 Release Notes
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Appendix B Software Upgrade
Software used for upgrade
Boot ROM images
Boot ROM images are used to upgrade the Boot ROM program of cards, including the main processing
units (MPUs) and line processing units (LPUs). A Boot ROM image is a .btw file.
System software images
System software images are used at switch startup. The HP 7500 series support two types of system
software image:
Main system software image—The default system software image a switch uses for startup.
Backup system software image—The system software image a switch uses for startup when the
main system software image is invalid or does not exist.
NOTE:
Generally, there is no need to upgrade the Boot ROM program independently. The device uses the
shipped Boot ROM program.
The examples in this document use BootWare2.00. The output is for illustration only.
Patch package file
Patches for the HP 7500 switches are released in a patch package file.
A patch package file fixes certain software defects. It contains patch files for multiple cards. It enables
you to use one command to bulk-fix bugs for multiple cards.
A patch package file corresponds to the system software image version. A patch package file can only
fix defects of the corresponding system software image file, but does not add or delete any functions.
Upgrade methods
You can upgrade switch software by using one of the following methods:
Upgrade mode
Object
Remarks
Upgrade from the CLI
Boot ROM
System software
Reboot the switch to validate the upgrade.
This method interrupts services.
Patches
This method does not interrupt services, and fixes the
target system software only.
Upgrade from the boot
menu
Boot ROM
System software
This method can be used when the switch cannot start up.
In-Service Software
Upgrade (ISSU)
System software
This method uses an active/standby switchover
mechanism to complete upgrade and does not interrupt
services. For more information about ISSU, see the
Fundamentals Configuration Guide in the HP 7500 Switch
Series Configuration Guides.