Users Guide

Resetting a Unit on a Stack
Use the following reset command to reload any of the member units or the standby in a stack. If you try to reset the stack master, the
following error message is displayed:
% Error: Reset of master unit is not allowed.
To reset a unit on a stack, use the following command:
• Reset any designated stack member, except the management unit.
EXEC Privilege mode
reset stack-unitunit-number {hard}
• Hard reset any stack unit including master unit.
EXEC Privilege mode
power-cycle stack-unit [unit-number]
Removing an Aggregator from a Stack
To remove an Aggregator from a stack, follow the below steps:
1 Disconnect the stacking cables from the unit. The unit can be powered on or o and can be online or oine.
2 Log on to the CLI and enter Global Conguration mode.
Login: username
Password: *****
Dell> enable
Dell# configure
3 Congure the Aggregator to operate in standalone mode.
CONFIGURATION
stack-unit 0 iom-mode standalone
4 Log on to the CLI and reboot each switch, one after another, in as short a time as possible.
EXEC PRIVILEGE
reload
The switch functions in standalone mode but retains the running and startup conguration that was last synchronized by the master switch
while it operated as a stack unit.
Merging Two Operational Stacks
The recommended procedure for merging two operational stacks is as follows:
1 Always power o all units in one stack before connecting to another stack.
2 Add the units as a group by unplugging one stacking cable in the operational stack and physically connecting all unpowered units.
3 Completely cable the stacking connections, making sure the redundant link is also in place.
Two operational stacks can also be merged by reconnecting stack cables without powering down units in either stack. Connecting a
powered-up standalone unit to an existing stack leads to same behavior as when merging two operational stacks. In such cases, Manager
re-election is done and the Manager with the higher MAC address wins the election. The losing stack manager resets itself and all its
member units. After the reset, all the losing stack members join the winning stack to form a single stack. The winning stack remains
Stacking
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