Netgear NETGEAR Manual Do Utilizador

12-8

Managing Switch Stacks

All stack members must run the same software version to ensure compatibility between stack 
members. The software versions on all stack members, including the stack master, must be the 
same. This helps ensure full compatibility in the stack protocol version among the stack members.

If a stack member is running a software version that is not the same as the stack master, then the 
stack member is not allowed to join the stack. Use the show switch command to list the stack 
members and software versions. See 

You can upgrade a switch that has an incompatible software image by using the archive 
download-sw xmodem | ymodem | zmodem | tftp://ip/filepath/filename command (this is in the 
stacking configuration mode). It copies the software image from an existing stack member to the 
one with incompatible software. That switch automatically reloads and joins the stack as a fully 
functioning member.

The configuration files record settings for all global and interface specific settings that define the 
operation of the stack and individual members. Once a save config command is issued, all stack 
members store a copy of the configuration settings. If a stack master becomes unavailable, any 
stack member assuming the role of stack master will operate from the saved configuration files.

When a new, out-of-box switch joins a switch stack, it uses the system-level settings of that switch 
stack. However, if you want it to store this system level configuration, you must issue a save 
config command.

You back up and restore the stack configuration in the same way as you would for standalone 
switch configuration by using the copy command.