Patent ID: 9106547
Filing Date: 2015-08-11
Classification: H04L

Abstract:
1. A first communication apparatus to be coupled to a second communication apparatus and a third communication apparatus via a ring network, comprising: a first port coupleable to the second communication apparatus via a link of the ring network; and a second port coupleable to the third communication apparatus via a link of the ring network; wherein both the first port and the second port are set to send and receive a first control frame to and from the second communication apparatus and the third communication apparatus, to monitor a status for a link of the ring network between the first communication apparatus and either the second communication apparatus or the third communication apparatus, and either the first port or the second port is set to be disabled to relay a user frame during the normal status for a link of the ring network determined by a receipt of the first control frame on the first port and the second port.