Patent ID: 9569301
Date: 2017-02-14
CPC Classifications: G06F,H04L

Claim:
1. A method for determining an NVGRE data path failure, the method comprising: generating, at an originating tunnel end point device in a network, a first data packet comprising an echo request, the echo request including an NVGRE virtual subnet identifier (VSID) located in a payload portion of the echo request, wherein the NVGRE VSID identifies a selected NVGRE segment and is used to generate an echo reply in response to the echo request; generating a second data packet comprising a header having a format associated with an NVGRE technology, the header comprising a network identifier portion including the NVGRE VSID; encapsulating the first data packet in the second data packet; transmitting the second data packet to a destination node via the selected NVGRE segment; receiving the echo reply in response to transmitting the second data packet to the destination node, the echo reply including a port number of the destination node; and determining whether there is a failure in the selected NVGRE segment by matching the echo reply with the echo request based on the port number.