Patent ID: 9705768
Date: 2017-07-11
CPC Classifications: H04L

Claim:
1. A method, comprising: determining, via a local fault poller, a list of local unreachable devices of a plurality of devices within a local domain, wherein the local unreachable devices are coupled for communication with the local fault poller; determining selected neighboring domains of a plurality of neighboring domains, wherein the selected neighboring domains are outside the local domain and comprise neighboring devices which are coupled for communication with the local unreachable devices, each neighboring domain having a respective neighboring global fault poller; requesting an operational test of the local unreachable devices within the local domain by the respective neighboring global fault pollers of the selected neighboring domains outside the local domain; receiving responses, via the respective neighboring global fault pollers of the selected neighboring domains outside the local domain, indicating whether the local unreachable devices within the local domain are operational; determining, based on the responses, a root cause device from the list of local unreachable devices.