If a switch is added to a stack and it does not have the same version of code as that of the master, the following occurs:
- The new unit boots up and becomes a member of the stack.
- Ports on the added unit remain in the detached state.
- A message displays on the CLI indicating a code mismatch with the newly added unit.
- To have the newly added unit to merge normally with the stack, use the copy command to load the correct code from the master to the newly added unit. Then reset the newly added member. It should reboot normally and join the stack.
For more information, see the followoing support articles:
- What is switch firmware and how does it work with my managed switch?
- How do I upgrade the firmware on my managed switch?
- How do I migrate a configuration with a firmware upgrade on my managed switch?
- How do I copy master firmware to a stack member using the web interface on my managed switch?
This article applies to the following managed switches and their respective firmware:
- M5300 - firmware version 10.0.0.x
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- M5300-28G (GSM7228S)
- M5300-5G (GSM7252S)
- M5300-28G3 (GSM7328Sv2h2)
- M5300-52G3 (GSM7352Sv2h2)
- M5300-28G_POE+ (GSM7228PSv1h2)
- M5300-52G-POE+ (GSM7252PSv1h2)
- M5300-28GF3 (GSM7328FSv2)
- XSM7224S - firmware version 9.0.1.x
Last Updated:07/07/2025
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Article ID: 21892