Patent ID: 8948052
Filing Date: 2015-02-03
Classification: H04L,H04W

Abstract:
1. A method for discovering a route for a message from a source node in a first domain of the network and destined to a destination node in a second domain of the network, comprising: (a) upon receiving a route error message at said source node or at an intermediate node in a predetermined path between said source node and said destination node, transmitting an alternate route discovery (ARDisc) message from one of the source node or intermediate node receiving said message to one of a corresponding domain lead node of the first domain or a corresponding domain lead node of an intermediate domain, wherein the ARDisc message identifies the destination node in said second domain; (b) receiving the transmitted ARDisc message at one of the domain lead node of the first domain or the domain lead node of the intermediate domain; (c) determining, at one of the domain lead node of the first domain or the intermediate domain lead node of the intermediate domain, if an identifier of the destination node is included in either an associated one hop or two hop routing table; (d) if said determining step is satisfied, transmitting an alternative Route Resolution (ARRes) message from one of the domain lead node of the first domain to the source node or the domain lead node of the intermediate domain to the intermediate node, wherein the ARRes message identifies an alternative node in one of the source domain or intermediate domain to allow the source node or intermediate node to link with, to facilitate an alternative routing of the message to the destination node.