This feature provides a global enable/disable control and controls per port. Additional controls are provided to create, destroy, enable and disable static MAC to Interface bindings. The MAC and port, together are required to be unique (the same MAC may be bound to multiple ports).
The configuration of a maximum number of static and dynamic entries (each individually) is provided per port. First Arrival bindings (also known as first arrival MAC locking stations) are not persistent through a device reset. Static bindings (also known as static MAC locking stations) are maintained through a device reset. First Arrival bindings are removed in the event of link loss, or after the FDB (forwarding database) entry with the MAC locked MAC ages out. A port, may have both the static and dynamic entries, at any instance.
Dynamic locking may be disabled by setting the maximum number of First Arrival MAC addresses to zero.
Controls are provided per port to convert all current first arrival entries to static entries. This converts only the first arrival MAC bindings to static bindings. This is not to be confused with MAC locking where all dynamic FDB entries are converted to static permanent locked FDB entries and further learning is disabled. Controls are provided to clear current (both static and dynamic) bindings. Each port is configurable to support the aging of dynamically locked bindings.
The device keeps a record of the number of MAC locked stations and when the configured threshold is reached, a threshold SNMP (Simple Network Management Protocol) trap/notification and/or a log message is issued based on the per-port configuration. The Source MAC Address of the frame causing the last invalid attempt is also recorded. In the event that the device is so configured, a violation SNMP Trap/ Notification and/or a violation log message is issued – these controls will be exercised per port.
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