Netgear M5300-28G-POE+ (GSM7228PSv1h2) - 12-Port Managed Gigabit Switch Ratgeber Für Administratoren

Disconnect the redundant stack cable that connects the last switch in the stack to the first 
switch in the stack at the position in the ring where you intend to insert the new switch.

If you want to merge an operational stack into the this stack, add the 
switches as a group by unplugging one stacking cable in the operational 
stack and physically connecting all unpowered units at that point.

Connect this cable to the new switch, following the established order of stack-up to 
stack-down connections.

Power up the new switches one by one.

Verify, by monitoring the master switch console port, that the new switch joins the stack by 
issuing the show switch command. The new switch joins as a member (never as master; 
the existing master of the stack must not change).

If the firmware version of the newly added member is not the same as the existing stack, 
update the firmware (see 

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Make sure that the redundant stack connection is functional. 

All stack members must be connected in a logical ring.

Power down the switch that you want to remove.

If the switch stack is not cabled correctly, removing powered-on stack 
members might cause the switch stack to divide (that is, partition) into two 
or more switch stacks, each with the same configuration. Make sure that 
the switch stack is cabled correctly.

Disconnect the stack cables.

If you do not intend to replace the switch, reconnect the stack cable from the stack member 
above to the stack member below the switch that you intend to remove.

Remove the switch from the rack.

To remove the switch not only from the stack but also from the stack configuration, issue the 
no member

 unit-id command.

If the switch stack divides, and you want the switch stacks to remain 
separate, change the IP address or addresses of the newly created 
switch stacks.