Patent ID: 9444690
Filing Date: 2016-09-13
CPC Classification: H04L

Claim Text:
1. An operating method applied to a network system, the operating method comprising: setting a plurality of first connection ports from among a plurality of connection ports of a first switch as belonging to a first loop group; receiving, through the first switch, a topology change notification; determining, through the first switch, whether the topology change notification is received via one of the first connection ports; and under a condition that the topology change notification is received via one of the first connection ports, outputting, through the first switch, the topology change notification via the other of the first connection ports, and not via any one of the connection ports which do not belong to the first loop group; and clearing a first media access control address corresponding to the one of the first connection ports receiving the topology change notification and a second media access control address corresponding to the other of the first connection ports outputting the topology change notification according to the topology change notification, and not clearing any third media access control address corresponding to any one of the connection ports which do not belong to the first loop group.