Determining when to relearn a relationship between a network address and a port

摘要

A device may receive a packet, via a first port, that identifies a source network address. The device may determine a second port, identified in a data structure, that is associated with the source network address. The second port may be different from the first port. The device may determine an age indicator, stored in the data structure, associated with the source network address and the second port. The device may compare the age indicator to a threshold, and may selectively perform a first action or a second action based on comparing the age indicator to the threshold. The first action may include maintaining, in the data structure, a first indication of a first relationship between the source network address and the second port. The second action may include storing, in the data structure, a second indication of a second relationship between the source network address and the first port.

主权项

1. A device, comprising:
one or more processors to:
receive an incoming packet, via a first port, that identifies a source media access control (MAC) address;determine a second port, identified in a data structure accessible by the device, that is associated with the source MAC address;determine that the first port and the second port are different ports;determine an age indicator associated with the source MAC address and the second port based on determining that the first port and the second port are different ports,
the age indicator being a counter indicating an amount of time that has elapsed since a packet was received, via the second port, that identifies the source MAC address; andselectively perform a first action or a second action based on the age indicator,
the first action including maintaining, in the data structure, a first indication of a first relationship between the source MAC address and the second port, andthe second action including storing, in the data structure, a second indication of a second relationship between the source MAC address and the first port.