Administrator Guide

Remove Units or Front End Ports from a Stack
To remove units or front end ports from a stack, use the following instructions.
• Removing a Unit from a Stack
• Removing Front End Port Stacking
Removing a Unit from a Stack
The running-configuration and startup-configuration are synchronized on all stack units. A stack member that is disconnected from the
stack maintains this configuration.
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 offline.
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.
The following example shows removing a stack member (before).
The following example shows removing a stack member (after).
DellEMC#show system brief
Stack MAC : 90:b1:1c:f4:a7:c7
Reload-Type : normal-reload [Next boot : normal-reload]
-- Stack Info --
Unit UnitType Status ReqTyp CurTyp Version Ports
------------------------------------------------------------------------------------
0 Member not present S6000-ON
1 Member not present
2 Standby online S6000-ON S6000-ON 1-0(0-3387) 128
3 Member not present S6000-ON
4 Member not present
5 Management online S6000-ON S6000-ON 1-0(0-3387) 128
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 configuration on the front end ports used for stacking, use the following commands.
1. Remove the stack group configuration that is configured.
CONFIGURATION mode
no stack-unit id stack-group id
2. Save the stacking configuration 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
828
Stacking