Configuration manual

Stacking S-Series Switches | 1045

Figure 51-11. Stacking Cable Redundancy

LED Status Indicators on an S-Series Stack

The stack unit is displayed in an LED panel on the front of each switch. Each panel displays the stack unit

ID — from 0 through 7 — and:

• A for the management unit

• Bfor the standby management unit

• 0 for stack members

Add a Unit to an S-Series Stack

If you are adding units to a stack, you can either:

• allow FTOS to automatically assign the new unit a position in the stack, or

• manually determine each units position in the stack by configuring each unit to correspond with the

stack before connecting it

Three configurable system variables affect how a new unit joins a stack: priority, stack number, and

provision.

• Depending on which has the higher priority, either the standalone unit or the entire stack reloads

(excluding the new unit). If the new unit has the higher priority, it becomes the new stack manager and

the stack reloads, as shown in Figure 51-3, Figure 51-4, Figure 51-5, and Figure 51-6.

• If you add a unit that has a stack number that conflicts with the stack, the stack assigns the first

available stack number, as shown in Figure 51-12 and Figure 51-13.

• If the stack has a provision for the stack-number that will be assigned to the new unit, the provision

must match the unit type, or FTOS generates a type mismatch error, as show in Figure 51-14 and

Figure 51-15.

After the new unit loads, it synchronizes its running and startup configurations with the stack.

Stacking 002

Stacking Cable Redundancy