Special Cases With Software Licensing - Avaya 4550T-PWR+ Fundamentals

Feature licensing fundamentals
11. After the system displays MAC swap successful, click Return to License Bank
12. Select the transaction that contains the license file name with the new MAC
13. Click Download.

Special cases with software licensing

About this task
The following sections describe situations when software licensing can be lost or fail.
Downgrade of switch software followed by upgrade of switch software
On a standalone switch, if you downgrade from R5.4 or later software to R5.3 or earlier
software, and then upgrade back to R5.4 or later software, the software license is lost.
In a stack, if you downgrade from R5.4 or later software to R5.3 or earlier software, and then
upgrade back to R5.4 or later software, the license is retained. The system sets the operational
license to Advanced software and the installed license displays as none. Because R5.3 is
unaware of software licensing, the license can be lost in the rare event that memory is reused.
If this happens, you must reinstall the software license after upgrade.
Base unit failure in a stack of 2 units
It is not recommended to operate a stack of two switches with a software license based only
on the base unit (BU) MAC address. If the base unit fails, after you reboot the former non-base
unit (NBU), now a standalone switch, the switch is unlicensed.
To prevent the loss of the software license, Avaya recommends that you install a software
license that contains the NBU MAC address.
Base unit failure in a stack of more than 2 units
It is not recommended to install a license file when the system is operating in temporary base
unit (TBU) mode.
In a stack, if you create a license file based on the MAC address of the base unit (BU), then
designate another unit in the stack as the BU, when you download the license file the system
generates error messages and the license process fails.
18 Fundamentals
If you exceed the MAC replacement threshold, a message appears confirming that
the MAC swap is unsuccessful. Select a different LAC entry and try again. If no
other LAC entries appear in the list, contact technical support.
Details.
address.
Comments? infodev@avaya.com
December 2011