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

A supervisor retains its role unless one of these events occurs:

The supervisor is removed from the chassis.

The supervisor is reset or powered off.

The supervisor fails.

If a supervisor reelection occurs, the new supervisor becomes available after a few seconds. 
In the meantime, the chassis uses the forwarding tables in memory to minimize network 
disruption. The physical interfaces on the other available chassis members are not affected 
while a new supervisor is elected. If a new supervisor is elected and the previous supervisor 
becomes available, the previous supervisor does not resume its role as supervisor.

A chassis has up to three blades connected through the backplane. A chassis always 

includes one supervisor; the other blades are members. The operation of the chassis 
continues uninterrupted during membership changes unless you remove the supervisor.

A slot number (1 to 3) identifies each member in the chassis. The slot number also 

determines the interface-level configuration that a chassis member uses. You can display the 
slot member number by using the show chassis command. The slot number is fixed per 
slot and not changed.

All chassis members must run the same firmware version. This helps ensure full compatibility 

in the chassis protocol version among the chassis members.

If a chassis member is running a different firmware version than the supervisor, that chassis 
member is not allowed to join the chassis. Use the show chassis command to list the 
chassis members and firmware versions. For more information, see 

You can upgrade a member that is running an incompatible firmware image by using the 
following command: copy [image1 |image2] unit://<1-3>/[image1|image2] 

This command copies the firmware image from a supervisor to the one with incompatible 
firmware. You must reload the member to join the chassis as a fully functioning member.

If a member is added to a chassis and it does not use the same version of code as that of the 
supervisor, the following occurs:

Ports on the added member remain in the detached state.

A message displays on the CLI indicating a code mismatch with the newly added 

member.

To cause the newly added member to merge normally with the chassis switch, use the 
copy

 command to load the correct code from the supervisor to the newly added member. 

Then reset the newly added member. It reboots normally and joins the chassis switch.