Patent ID: 6834139
Filing Date: 2004-12-21
Classification: G02B,H04L,H04Q

Abstract:
A method for operating a first node in a data communication network to verify connectivity to a second node in said data communication network, said method comprising:transmitting data from a port at said first node; monitoring data received at said port at said first node to check for a match to said transmitted data; if said received data matches said transmitted data, determining that said port at said first node is connected to a looped-back port at said second node and storing an indication of connectivity between said first node and said second node; monitoring data received at a port other than said port transmitting data; if received data via said port other than said port transmitting data matches said transmitted data, determining that there is a miswiring between said first node and said second node; and reporting said miswiring to an operator.