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Setting Up a Stacked Configuration Managing OmniSwitch 6600 Series Stacks
page 3-8 OmniSwitch 6600 Series Hardware Users Guide April 2004
Setting Up a Stacked Configuration
In order to set up a new stacked OmniSwitch 6600 series configuration, you must complete the following
steps, in the order they are listed:
1 Individually assign slot numbers to all switches
2 Attach all required stacking cables
3 Boot the newly-configured stack
For OmniSwitch 6600 series switches, the term “slot” refers to the priority status of the switch within the
stacked configuration. Slot numbers may range from 1 to 8. For detailed instructions on setting up a stack,
refer to the sections below.
Assigning Slot Numbers
Before assigning slot numbers to switches in a stacked configuration, note the following important
guidelines:
• The slot number is displayed by the slot indicator LED located on the left side of the chassis front panel
(refer to “Status LEDs” on page 2-11 for more information).
• Slot numbers do not need to be sequential. However, each switch in a stack must have a unique slot
number. If duplicate slot numbers are encountered, an error will occur and the stack will be disabled.
• The top switch in the stack does not have to be designated as slot 1.
• By default, the primary—or management—role will be given to the switch with the lowest chassis
MAC address. All other switches in the stack will be in non-operational status until slot numbers are
assigned by the user and the stack is manually rebooted.
• After manually assigning the slot assignments for all switches and rebooting the stack, the primary role
will be given to the switch with the lowest slot number. The secondary role will be given to the switch
with the next-lowest number. All additional switches with higher numbers will be given idle status.
• Changing the slot number of a chassis does not immediately change its management role (i.e., primary,
secondary, or idle). You must reboot all the switches in the stack before these changes will take effect.
• Refer to the illustration on page 3-10 for one of many valid slot numbering possibilities.
To assign a new slot number to one or more switches in a stack, follow the steps below:
1 To change the slot number, gently insert a pointed item, such as the open, pointed end of a paper clip,
into the small hole (labeled SEL) below the slot number LED on the switch’s front panel. The LED
display will begin to flash. You can manually change the slot number as long as the LED continues to
flash.
Note. The LED may also advance by one number when the SEL button is initially pressed.