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Dell EMC Configuration Guide for the S3100 Series 9.14.2.4

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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.

Examples of Removing a Stack Member (Before and After)

The following example shows removing a stack member (before).

DellEMC#show system brief

Stack MAC                  : 34:17:17:18:19:1e
Reload-Type                : normal-reload [Next boot : normal-reload]

--  Stack Info  --
Unit  UnitType     Status         ReqTyp          CurTyp          Version     Ports
---------------------------------------------------------------------------------
  1   Member       online         S3148P          S3148P          1-0(0-4679)  54
  2   Management   online         S3148P          S3148P          1-0(0-4679)  54
  3   Standby      online         S3148P          S3148P          1-0(0-4679)  54
  4   Member       not present     
  5   Member       not present     
  6   Member       not present     
  7   Member       not present     
  8   Member       not present     
  9   Member       not present     
 10   Member       not present     
 11   Member       not present     
 12   Member       not present     

--  Module Info  --
Unit  Module No   Status        Module Type                  Ports
---------------------------------------------------------------------------
  1   1           online        S3148P-10GE-2X10BaseT         2
  2   1           online        S3148P-10GE-2SFP+             2
  3   1           online        S3148P-10GE-2X10BaseT         2
  
--  Power Supplies  --
Unit   Bay   Status       Type    FanStatus   FanSpeed(rpm)
---------------------------------------------------------------------------
  1     1    up           AC      up          7888
  1     2    down         UNKNOWN absent      NA
  2     1    up           AC      up          NA
  2     2    absent               absent      NA
  3     1    absent               absent      0
  3     2    up           AC      up          7888  
--  Fan  Status  --
Unit Bay   TrayStatus  Fan1    Speed   Fan2    Speed
------------------------------------------------------------------------------------
 1    1     up          up      7164    up      7058
 2    1     up          up      6956    up      7058
 3    1     up          up      7058    up      7164
 
Speed in RPM

DellEMC#

The following example shows removing a stack member (after).

03:43:31: %STKUNIT2-M:CP %CHMGR-2-STACKUNIT_DOWN: stack-unit 1 down - card removed
03:43:31: %STKUNIT2-M:CP %IFMGR-1-DEL_PORT: Removed port: Gi 1/1-1/48, Te 1/49-1/50, 

DellEMC#show system brief

Stack MAC                 : 34:17:17:18:19:1e
Reload-Type               : normal-reload [Next boot : normal-reload]

--  Stack Info  --
Unit  UnitType     Status         ReqTyp          CurTyp          Version     Ports
------------------------------------------------------------------------------------
  1   Member       not present     
  2   Management   online         S3148P          S3148P          1-0(0-4679)  54
  3   Standby      online         S3148P          S3148P          1-0(0-4679)  54
  4   Member       not present     
  5   Member       not present     
  6   Member       not present     
  7   Member       not present     
  8   Member       not present     
  9   Member       not present     
 10   Member       not present     
 11   Member       not present     
 12   Member       not present     

--  Module Info  --
Unit  Module No   Status        Module Type                  Ports
---------------------------------------------------------------------------
  2   1           online        S3148P-10GE-2SFP+             2
  3   1           online        S3148P-10GE-2X10BaseT         2

  
--  Power Supplies  --
Unit   Bay   Status       Type    FanStatus   FanSpeed(rpm)
---------------------------------------------------------------------------
  2     1    up           AC      up          NA
  2     2    absent               absent      NA
  3     1    absent               absent      0
  3     2    up           AC      up          7888  
--  Fan  Status  --
Unit Bay   TrayStatus  Fan1    Speed   Fan2    Speed
------------------------------------------------------------------------------------
 2    1     up          up      6956    up      7058
 3    1     up          up      7058    up      7164
 
Speed in RPM

DellEMC#
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.

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