Managing OmniSwitch 6850/6850E Series Stacks
Slot Numbering
OmniSwitch 6850/6850E Series Hardware Users Guide
June 2011
page 6-25
Manual Slot Number Assignment
To manually assign slot numbers to one or more modules in a stack, use the
stack set slot
command. This
command writes slot information to the
boot.slot.cfg
file located in a switch’s /flash directory. It is this
saved slot
information that the switch will assume following a reboot.
Manually assigning slot numbers can be useful in reordering existing slot numbers in order to create a
sequential numbering scheme from the top of the stack to the bottom (or vice-versa). Refer to the follow-
ing example:
This example, taken from
page 6-23
, shows a stack in which the primary and secondary switches are phys-
ically positioned in the middle of the stack. Although the stack will operate normally with this primary and
secondary module positioning, it may be preferable for management purposes to have the primary and
secondary switches at either the top or the bottom of the stack. For this example, the primary and second-
ary roles will be assigned to the top of the stack. This is accomplished by entering the following
commands:
-> stack set slot 6 saved-slot 1
-> stack set slot 7 saved-slot 2
-> stack set slot 8 saved-slot 3
-> stack set slot 1 saved-slot 4
-> stack set slot 2 saved-slot 5
-> stack set slot 3 saved-slot 6
-> stack set slot 4 saved-slot 7
-> stack set slot 5 saved-slot 8
-> reload all
Because slot 6 is the top-most switch in the stack, it is reassigned the slot 1 (i.e., primary) position;
because slot 7 is located immediately below slot 6, it is reassigned the slot 2 (i.e., secondary) position, etc.
Note that the modules were not reloaded one-by-one, even though the
stack set slot
command provides
optional syntax for doing so. Instead, new slot number information is first saved to each
boot.slot.cfg
file
across the stack. The reboot is saved for last in order to avoid duplicate slot numbers within the stack,
which would cause unwanted pass-though mode conditions (see
page 6-14
).
Slot 1 - Primary
Slot 2 - Secondary
Slot 3 - Idle
Slot 4 - Idle
Slot 5 - Idle
Slot 6 - Idle
Slot 7 - Idle
Slot 8 - Idle
