Downgrade Limitations for a Stack with Multiple Device Models

Devices comprising a stack must run the same FastIron software version; the stack can only be downgraded to the latest software version that supports all units in the stack.

For example, a stack comprising ICX 8100-C08PF-X (supported from FastIron release 10.0.10g_cd1) and ICX 8100-C16P-X (supported from FastIron release 10.0.10h_cd1) can only be downgraded to FastIron release 10.0.10h_cd1.

When a downgrade is attempted to an unsupported release, an informational message is displayed indicating that the operation is not permitted.