Users Guide

Adding a Congured Unit to an Existing Stack
To add a congured unit to an existing stack, use the following commands.
If a stack unit goes down and is removed from the stack, the logical provisioning congured for that stack-unit number is saved on the
master and standby units. When a new unit is added to the stack, if a stack group conguration conict occurs between the new unit and
the provisioned stack unit, the conguration of the new unit takes precedence.
1 Add the congured unit to the top or bottom of the stack.
2 Power on the switch.
3 Attach cables to connect ports on the added switch to one or more existing switches in the stack.
4 Log on to the CLI and enter global conguration mode.
• Login: username
• Password: *****
• Dell> enable
• Dell# congure
5 Congure the ports on the added switch for stacking.
CONFIGURATION mode
stack-unit 0 stack-group group-number
• stack-unit 0: denes the default ID unit-number in the initial conguration of a switch.
• stack-group group-number: congures a port for stacking.
6 Save the stacking conguration on the ports.
EXEC Privilege mode
write memory
7 Reload the switch.
EXEC Privilege mode
reload
Dell Networking OS 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 congurations with the stack.
8 If a standalone switch already has stack groups congured.
Attach cables to connect the ports already congured as stack groups on the switch to one or more switches in the stack.
Dell Networking OS 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 congurations with the stack.
Dell Networking OS Behavior: When you add a switch to a stack
• If you congure the new unit with a stack number that is already assigned to a stack member, the stack avoids a numbering conict by
assigning the new switch the rst available stack number.
• If the stack has been provisioned for the stack number that is assigned to the new unit, the pre-congured provisioning must match
the switch type. If there is a conict between the provisioned switch type and the new unit, a mismatch error message is displayed.
Merge Two 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 portusing the mini-SAS cables from
the stacking ports.
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Stacking