Configuration Guide User guide

FastIron Configuration Guide 313
53-1002494-02
Brocade IronStack management
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. 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 secure-setup 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). Since 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.
Example
Brocade# stack secure-setup
Brocade#Discovering the stack topology...
Available UPSTREAM units
Hop(s) Type Mac Address
1 FCX624 0012.f2d5.2100
2 FCX624 001b.ed5d.9940
Enter the number of the desired UPSTREAM units (1-2)[1]: 2
Selected topology:
Active id Type Mac Address
1 FCX624 0012.f239.2d40
Selected UPSTREAM units
Hop(s) id Type Mac Address
1 5 FCX624 0012.f2d5.2100
2 6 FCX624 001b.ed5d.9940
Do you accept the unit ids? (y/n)?: n
Enter an unused id for the UPSTREAM FCX623 unit a 1 hop(s) (1-8)[5]: 2
Enter an unused id for the UPSTREAM FCX624 unit at 2 hop(s) (1-8) [6]: 3
Brocade# Election, was active, no role change, assigned-ID=1
reset unit 2: diff bootup id=5