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Ip DHCP Snooping strange behavior

Hello, we have a big ammount of WS-C2960S-48LPS-L in our environment and suddenly we had a power outtage, when the switches restarted, some of them started to filter directly connected PC and phone with Ip DHCP snooping. In the switches some PC's or phone were being filtered while some of the PC's and phones worked fine after the outtage, on the switches which had the issue, we issued "no ip dhcp snooping" and "ip dhcp snooping" in the uplink interface of the switches. Then everything worked fine, has someone ever met this strange behavior?

Kind regards.

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