Patent ID: 8320387
Filing Date: 2012-11-27
Classification: H04L

Abstract:
1. A ring type Ethernet system for Ethernet communications among communications equipment connected to a first sub-ring and communications equipment connected to a second sub-ring by having a relay connection between the first and second sub-rings, the relay connection connecting each of a plurality of different communications equipment in a ring form, the ring type Ethernet system comprising: a first ring type switch that, along with being connected in series to the first sub-ring, is connected in series to the second sub-ring; and a second ring type switch that, along with being connected in series to the first sub-ring, is connected in series to the second sub-ring, wherein: one of the first and second ring switches includes: an operating status of the first ring type switch and an operating status of the second ring type switch are exchanged between the first and second ring type switches, by carrying out redundant control processing based on the operating status of the second ring type switch and the operating status of the first ring type switch one of the first and second ring type switches operates as a currently used system by making a relay connection between the first and second sub-rings, and another one of the first and second ring type switches operates as a standby system by stopping relay connections between the first and second sub-rings, and one of the first and second ring connection control circuits is configured to perform: