Allied Telesis AT-S63 - Manual (Page 33)

AT-S63 Stack Command Line Interface User’s Guide
Section I: Basic Operations 33
Master and Member Switches
A stack must have a master switch to coordinate the activity of the
devices. There can be only one master switch, but it can be any unit. In a
stack with different AT-9400 Switch models, the master switch can be any
model. The master switch is selected during the discovery process and is
based on the module ID numbers of the units, as explained in “Module ID
Numbers” on page 36. The master switch has module ID 1.
The other switches of a stack are called as member switches.