Stack Interactive-setup

Stack interactive-setup is the recommended method for constructing a stack. The utility allows you to select units, IDs, and two-unit linear-topology trunks. Stack interactive-setup replaces the stack secure-setup utility used in releases prior to FastIron 08.0.90. The stack interactive-setup command, entered in privileged EXEC mode, is used to initiate the utility and is available on a standalone unit or on the active controller of a stack.

Stack interactive-setup has the following capabilities:

• Changing the ID for any existing unit, except for the active controller.
  Note: Changing an ID does not result in a configuration change. For example, when users change a unit ID from 2 to 3, the system does not change any unit 2 configuration to unit 3 configuration.
• Discovering new links between existing units and enlarging the stacking port or stacking trunk. Stack interactive-setup can discover new links between two end-units of a linear topology and convert the topology to a ring.
• Discovering clean units and converting them to stack members.
• Discovering existing standalone units and converting them to stack members.
  Note: If a discovered standalone unit is password protected, stack interactive-setup prompts you to enter the password. Stack interactive-setup checks for enable super-user password and ignores all other passwords.

RUCKUS recommends that you make all physical connections and run stack interactive-setup on the active controller of a stack or on a standalone unit that will become the active controller.

In a two-unit stack, you can choose a ring or a chain that forms a linear-topology trunk in either of the following cases:

• The configuration of the active controller is a linear-topology trunk. For example, an ICX 7250 has stack-trunk 1/2/1 to 1/2/4 or stack-trunk 1/2/5 to 1/2/8 configuration.
• All linear-topology trunk ports have physical connections.

Refer to Support for two-unit stack linear trunks for more information.

For example, if you connect all four ports 1/2/5 through 1/2/8 to ports 1/2/5 through 1/2/8 on another unit, stack interactive-setup displays an option to choose a ring of two trunks (stack-trunk 1/2/5 to 1/2/6 and stack-trunk 1/2/7 to 1/2/8), or a linear-topology trunk (stack-trunk 1/2/5 to 1/2/8). The default is to form a ring.

The following restrictions apply to connections for both stack interactive-setup and stack zero-touch provisioning:

• The connection cannot be out of sequential order in a stacking trunk.
  The following example needs to be revised to use a model other than the ICX 7750.
  Suppose, for example an ICX 7750 has the connection stack-trunk 1/2/1 to 1/2/3 that links to stack-trunk 2/2/4 to 2/2/6 on stack unit 2. Port 1/2/1 must link to 2/2/4, port 1/2/2 must link to 2/2/5, and so on.
• The primary port must be connected. For example, link 1/2/2 to 2/2/5 without link 1/2/1 to 2/2/4 is not valid. The system displays an error message and aborts.

The system performs numerous checks to confirm that the discovered topology is supported. If the system detects any error, it displays a message and aborts the operation.

The stack interactive-setup utility includes the following behaviors to improve the configuration process:

• The utility sends out probes to discover new units and connections as soon as it is enabled.
• Continuation of revision to remove ICX 7750 mention and use another model as example.
  The system changes configuration to suit the discovered topology. For example, if ICX 7750 stacking ports are configured on module 2 and another unit is discovered through ports on module 3, the system changes the ICX 7750 stacking port or stacking trunk configuration to module 3.
• The system tries to consider the current configuration when assigning stacking ports. For example, if the system discovers that ports 1/2/1 and 1/2/2 link to a new unit and the current configuration is stack-port 1/2/1, it enlarges the configuration to include port 1/2/2 and changes it to stack-trunk 1/2/1 to 1/2/2. If the current configuration is stack-trunk 1/2/1 to 1/2/3, the system keeps the super set.
• The stack-trunk is contiguous. If ports 1/2/1 and 1/2/3 link to another unit, the system generates stack-trunk 1/2/1 to 1/2/3, even if 1/2/2 has no link.
• After successfully converting standalone units to stack members, the priority of the unit running the stack interactive-setup utility is raised to 128.

If stack interactive-setup detects new links between existing units and discovers new units, the utility handles only the new links. Then stack interactive-setup requests that you run the utility again to discover new units.

For more information, refer to The stack interactive-setup utility.