Setup Guide
Removing a Unit from a Stack
The running-conguration and startup-conguration are synchronized on all stack units. A stack member that is disconnected from the
stack maintains this conguration.
To remove a stack member from the stack, disconnect the stacking cables from the unit. You may do this at any time, whether the unit is
powered or unpowered, online or oine.
NOTE: If you remove a unit in the middle of the daisy chain stack, the stack is split into multiple parts and each forms a new
stack according to the stacking algorithm described throughout this chapter.
Examples of Removing a Stack Member (Before and After)
The following example shows removing a stack member (before).
The following example shows removing a stack member (after).
NOTE: Each unit in the stack has a stack number that is either assigned by you or Dell EMC Networking OS. To manually
renumber stack members, use the stack-unit old-unit-number renumber new-unit-number command.
Renumbering stack members causes the entire stack to reload.
Removing Front End Port Stacking
To remove the conguration on the front end ports used for stacking, use the following commands.
1 Remove the stack group conguration that is congured.
CONFIGURATION mode
no stack-unit id stack-group id
2 Save the stacking conguration on the ports.
EXEC Privilege mode
write memory
3 Reload the switch.
EXEC Privilege mode
reload
After the units are reloaded, the system reboots. The units come up as standalone units after the reboot completes.
Troubleshoot a Stack
To troubleshoot a stack, use the following recovery tasks.
• Recover from Stack Link Flaps
• Recover from a Card Problem State on a Stack
Recover from Stack Link Flaps
Stack link integrity monitoring enables units to monitor their own stack ports and disable any stack port that aps ve times within 10
seconds.
Dell EMC Networking OS displays console messages for the local and remote members of a apping link, and on the primary (master) and
standby management units as KERN-2-INT messages if the apping port belongs to either of these units.
Stacking
855