HP StorageWorks Fabric OS 6.x administrator guide (5697-7344, March 2008)

498 Implementing an interoperable fabric
Activating Hot Code Load
1. Enter the firmwaredownload command without any option.
Firmwaredownload checks whether all switches in the fabric support HCL. If HCL is supported,
firmwaredownload proceeds and displays the normal message. If HCL is not supported,
firmwaredownload fails and prompts you to use the -o option. Firmwaredownload is not
running at that point.
2. Enter firmwaredownload –o.
Firmwaredownload does not check whether all switches in the fabric support HCL. If the normal
checks are successful, it proceeds and displays the normal message plus an additional message.
The firmwaredownload –o command upgrades both CPs in the switch. If you want to upgrade a
single CP only, use the -s option.
You can run firmwaredownloadstatus to get the status of this firmwaredownload.
The firmwaredownload –o command causes a warm and nondisruptive boot on the active CP, but
requires that existing Telnet, Secure Telnet, or SSH sessions be restarted.
You have elected to bypass the checking of Coordinated HCL. This may cause
traffic disruption for some switches in the fabric.
Do you want to proceed?
If you select yes, firmwaredownload proceeds and failure of the pause protocol is ignored.
Table 109 Hot Code upgrade considerations
Fabric OS Versions Notes
Upgrading from any other down-level
release
• Must upgrade to Brocade Native
mode, and then change the
interopmode; cannot be in McDATA
Open Fabric mode before the
upgrade.
• The upgrade is disruptive or has the
potential to be disruptive.
Upgrade to higher release than
Fabric OS 6.0 or Patch release of
Fabric OS 6.0
• Will be nondisruptive