New POE Switch Not Seeing Cameras

We recently put in a new managed PoE switch in our office with our cameras used for demonstration purposes connected. For whatever reason one Ganz IP camera appears but all 6 of the connected Illustra IP cameras are no longer discoverable.

I do not have all the details on the brand of switch or the specifications but I thought maybe someone here might offer up a suggestion; something we might try that we have not already done.

Thanks.

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