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Onboard Administrator not pingable after upgrade to 4.40 and up

On some occasions, I have seen that after upgrading from (for example from 3.70 to 4.40 and up), the Onboard Administrator is not accessible anymore. Even connecting direct with a Laptop to the OA port does not reply on a ping.

The problem came from the fact that the OA’s IP was tagged and had fallen back to the default VLAN, but still being tagged.

You can change it back to the correct VLAN by setting it on the Front Operational Pannel.