![]() Only frames with an allowable source MAC addresses are forwarded. After the limit is reached, additional MAC addresses are not learned. The maximum number of MAC addresses is platform dependent and is given in the software Release Notes. You can specify the maximum number of MAC addresses that can be learned on a port. Port security implements two traffic filtering methods, dynamic locking and static locking. You can enable port security on a per port basis.Packets that have a matching MAC address (secure packets) are forwarded all other packets (unsecure packets) are restricted. You can limit the number of MAC addresses on a given port.The port security feature offers the following benefits: When a link goes down, all dynamically locked addresses are freed. Port Security helps secure the network by preventing unknown devices from forwarding packets.
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