Here is a useful command to check your port security configuration. How do I check my port security violations? When can a port security violation occur on a switch?Ī switchport violation occurs in one of two situations: When the maximum number of secure MAC addresses has been reached (by default, the maximum number of secure MAC addresses per switchport is limited to 1) An address learned or configured on one secure interface is seen on another secure interface in the same VLAN. The switchport security feature (Port Security) is an important piece of the network switch security puzzle it provides the ability to limit what addresses will be allowed to send traffic on individual switchports within the switched network. Restrict – When a violation occurs in this mode, the switchport will permit traffic from known MAC addresses to continue sending traffic while dropping traffic from unknown MAC addresses.
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