Allied Telesis AT-SBx81CFC960 - Manual (Page 286)

Chapter 15: Building a Stack
286 Section III: Building a Stack with VCStack Plus
writing the information, go to “Activating the VCStack Plus Feature
License” on page 287.
 If you are configuring the second chassis, compare the version
number displayed by the SHOW SYSTEM command against the
version number you wrote down on paper from the first chassis. If
the two chassis have the same management software and the
version number is 5.4.4 or greater, you may go to “Activating the
VCStack Plus Feature License” on page 287. If they are different,
you must upgrade the management software on one or both units
so that they have the same version. For upgrade instructions, refer
to the Software Reference for SwitchBlade x8100 Series Switches.
After updating the management software, go to “Activating the
VCStack Plus Feature License” on page 287.