Patent ID: 11888741
Assignee: TELIA COMPANY AB
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 19:
20. A communication system comprising:
a network node that manages a media access control (MAC) address table, the network node comprising:
at least one processor; and
at least one memory, in communication with the at least one processor and having computer program code stored therein,
the computer program code configured to, upon execution by the at least one processor, cause the network node to:
define a first running time and a second running time for a timer, the first running time and the second running time being applicable for defining validity times for a MAC address in the MAC address table;
receive a frame, where a MAC address of a source of the received frame is present in the MAC address table;
detect whether a MAC address of a destination of the received frame is present in the MAC address table;
apply the first running time to the timer of the MAC address of the source of the received frame, in response to a detection that the MAC address of the destination of the received frame is missing in the MAC address table; and
apply the second running time to the timer of the MAC address of the source of the received frame and to the timer of the MAC address of the destination of the received frame, in response to a detection that the MAC address of the destination of the received frame is present in the MAC address table.