Patent ID: 8699354
Filing Date: 2014-04-15
Classification: H04B,H04L

Abstract:
1. A method for detecting a fault on a first optical fiber connected to a transmit interface of a port, the method comprising: receiving a command identifying a particular fault detection mode of a plurality of fault detection modes to be associated with the port; receiving, at a receive interface of the port, a loss of signal indication on a second optical fiber connected to the receive interface of the port; interpreting the received loss of signal indication on the second optical fiber according to the particular fault detection mode associated with the port based on the command, the particular fault detection mode comprising an immediate mode wherein the received loss of signal indication is immediately interpreted as a fault on the first optical fiber connected to the transmit interface of the port or a multiple cycle detection mode wherein the received loss of signal indication at the receive interface on the second optical fiber is received for a particular number of cycles before being interpreted as the fault on the first optical fiber connected to the port, wherein the command identifies the multiple cycle detection mode and the particular number of cycles, wherein when the particular fault detection mode associated with the port is set to the immediate mode, interpreting the received loss of signal indication is performed so that any loss of signal indication on the second optical fiber is interpreted to indicate the fault on the first optical fiber connected to the port.