Dell PowerSwitch S4820T 9.50.1 Configuration Guide for the S4820T System - Page 903

Split an S-Series Stack To split a stack, unplug the desired stacking cables. You may do this at any time, whether the stack is powered or unpowered, and the units are online or offline. Each portion of the split stack retains the startup and running configuration of the original stack. For a parent stack that is split into two child stacks, A and B, each with multiple units: • If one of the new stacks receives the master and the standby management units, it is unaffected by the split. • If one of the new stacks receives only the master unit, that unit remains the stack manager, and Dell Networking OS elects a new standby management unit. • If one of the new stacks receives only the standby unit, it becomes the master unit of the new stack, and Dell Networking OS elects a new standby unit. • If one of the new stacks receives neither the master nor the standby management unit, the stack is reset so that a new election can take place. S-Series Stacking Configuration Tasks The following are configuration tasks for the S-Series. • Assigning Unit Numbers to Units in an S-Series Stack • Creating a Virtual Stack Unit on an S-Series Stack • Displaying Information about an S-Series Stack • Influencing Management Unit Selection on an S-Series Stack • Managing Redundancy on an S-Series Stack • Resetting a Unit on an S-Series Stack • Recover from Stack Link Flaps Assigning Unit Numbers to Units in an S-Series Stack Each unit in the stack has a stack number that is either assigned by you or Dell Networking OS. Units are numbered from 0 to 11, however, you can only stack six S4820T units. Stack numbers are stored in NVRAM and are preserved upon reload. • Assign a stack-number to a unit. EXEC Privilege mode stack-unit renumber Renumbering the stack manager triggers the whole stack to reload, as shown in the message below. When the stack comes back online, the master unit remains the management unit. Renumbering master unit will reload the stack. WARNING: Interface configuration for current unit will be lost! Proceed to renumber [confirm yes/no]: yes Creating a Virtual Stack Unit on an S-Series Stack Use virtual stack units to configure ports on the stack before adding a new unit. • Create a virtual stack unit. CONFIGURATION mode Stacking 903