Distributed Multi-fault Localization for Multi-domain EPCglobal Networks

In this paper, we propose a distributed fault localization protocol for localizing multi-link failures in EPC global networks. the protocol is based on a parallel limited-perimeter vector matching (P-LVM) mechanism, which restricts fault localization within a smaller perimeter area and can thus significantly reduce fault localization time. by performing a fault localization process sequentially in the EPC-global domains that an affected connection passes through, the protocol can localize both inter-domain and intra-domain link failures that affect inter-domain traffic without exchanging any internal confidential domain-specific information between different EPC global domains. We show through analytical results that it can not only fast localize an inter-domain link failure between different domains but also localize an intra-domain link failure that affects inter-domain traffic faster than any localization protocol known in the literature.