Reference Guide

– Login: username
– Password: *****
– FTOS> enable
– FTOS# configure
5. Configure the ports on the added switch for stacking.
CONFIGURATION mode
stack-unit 0 stack-group group-number
– stack-unit 0: defines the default ID unit-number in the initial configuration of a switch.
– stack-group group-number: configures a port for stacking.
6. Save the stacking configuration on the ports.
EXEC Privilege mode
write memory
7. Reload the switch.
EXEC Privilege mode
reload
FTOS automatically assigns a number to the new unit and adds it as member switch in the stack. The new unit
synchronizes its running and startup configurations with the stack.
8. If a standalone switch already has stack groups configured.
Attach cables to connect the ports already configured as stack groups on the switch to one or more switches in the
stack.
FTOS automatically assigns a number to the new unit and adds it as member switch in the stack. The new unit
synchronizes its running and startup configurations with the stack.
FTOS Behavior: When you add a switch to a stack
• If you configure the new unit with a stack number that is already assigned to a stack member, the stack avoids a
numbering conflict by assigning the new switch the first available stack number.
• If the stack has been provisioned for the stack number that is assigned to the new unit, the pre-configured
provisioning must match the switch type. If there is a conflict between the provisioned switch type and the new
unit, a mismatch error message is displayed.
Merge Two S-Series Stacks
You may merge two stacks while they are powered and online.
To merge two stacks, connect one stack to the other using user port cables from the front end user port.
• FTOS selects a master stack manager from the two existing managers based on the priority of the stack.
• FTOS resets all the units in the losing stack; they all become stack members.
• If there is no unit numbering conflict, the stack members retain their previous unit numbers. Otherwise, the stack
manager assigns new unit numbers, based on the order that they come online.
• The stack manager overwrites the startup and running config on the losing stack members with its own to
synchronize the configuration on the new stack members.
Split an S-Series Stack
To split a stack, unplug the desired stacking cables.
You may do this at any time, whether the stack is powered or unpowered, and the units are online or offline. Each
portion of the split stack retains the startup and running configuration of the original stack.
For a parent stack that is split into two child stacks, A and B, each with multiple units:
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