Brocade FastIron Ethernet Switch Stacking Configuration Guide - Manual (Page 85)

1. Remove the old stack unit from the stack
2. Connect the new unit to the existing stack using the same stacking ports used by the old unit.
3. Run secure ‐setup to select the ID of the old unit for the new unit. The active controller resets the
unit, and it joins the stack.
NOTE
Adding, removing or replacing a stack unit which is not at the end of linear topology may cause the
other units in the stack to reset if these units lose their path to the active controller during the
process. Adding or removing a unit in a ring topology should not cause the other units to reset
because each unit can still find a path to the active controller.
Moving a unit to another stack
Moving a member from a stack and to another stack can result in non-sequential ID assignment. The
active controller will honor the new unit original ID if that ID is not being used in the new stack. The
active controller will assign a new ID if the original ID is already being used. To prevent non-sequential
stack ID assignments, configure the unit that is moving as a clean unit before adding it to the new stack.
Removing an active controller from a powered stack
To remove an active controller from a powered stack, disconnect the active controller. The standby
controller waits for 30 seconds and then assumes the role of active controller. If the hitless-failover
enable command is configured, the standby controller takes over immediately. A single active controller
device functions as a standalone unit even it is still stacking-enabled. You do not have to issue a stack
unconfigure me command for an active controller.
Renumbering stack units
You can use the stack secure-setup command to renumber stack units in a previously constructed
stack. In the following example, three units make up a stack, yet two of the units are numbered 5 and 6
(the active controller is numbered 1). Because this stack is only going to contain 3 units, you can
renumber the other units so that they are unit 2 and unit 3.
The most effective way to number your stack members is sequentially. You can skip numbers, but they
should still be sequential, from 1 to 8. Sequential numbering makes it easy to replace stack units, and
easier to troubleshoot issues.
NOTE
In a ring topology, 1, 2, 4, 5, and 1, 5, 4, 2 are both sequential.
device# stack secure-setup
device#Discovering the stack topology...
Available UPSTREAM units
Hop(s) Type MAC Address
1 FCX624 0000.00d5.2100
2 FCX624 0000.005d.9940
Enter the number of the desired UPSTREAM units (1-2)[1]: 2
Selected topology:
Active id Type MAC Address
1 FCX624 0000.0039.2d40
Selected UPSTREAM units
Hop(s) id Type MAC Address
1 5 FCX624 0000.00d5.2100
2 6 FCX624 0000.005d.9940
Do you accept the unit ids? (y/n)?: n
Moving a unit to another stack
FastIron Ethernet Switch Stacking Configuration Guide 83
53-1003090-02