Reference Guide

Stacking S-Series Switches | 707
LED Status Indicators on an S-Series Stack
The stack unit is displayed in an LED panel on the front of each switch. Refer to the installation guide for
your system type for a full discussion of all system display.
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 39-3, Figure 39-4, Figure 39-5, and Figure 39-6.
• 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 39-11 and Figure 39-12.
• 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 39-13 and
Figure 39-14.
After the new unit loads, it synchronizes its running and startup configurations with the stack.
To manually assign a new unit a position in the stack:
Step Task Command Syntax Command Mode
1 While the unit is not powered, install stacking modules in the new unit.
2 On the stack, determine the next available stack-unit
number, and the management prioritity of the
management unit.
show system brief
show system stack-unit
<stack-unit>
EXEC Privilege
3 Create a virtual unit and assign it the next available
stack-unit number.
stack-unit <stack-unit>
provision
<S25N|S25P|S25V|
S50N|S50V |S60}>
CONFIGURATION
4 On the new unit, number it the next available stack-unit
number.
stack-unit <stack-unit>
renumber <stack-unit>
EXEC Privilege
5 (OPTIONAL) On the new unit, assign a management
priority based on whether you want the new unit to be
the stack manager.
stack-unit <stack-unit>
priority <preference>
CONFIGURATION
6 Connect the new unit to the stack using stacking cables.