Patent ID: 8078758

Claim:
A method comprising: receiving, with a first network device, a routing communication from a second network device in accordance with a routing communication protocol, wherein the routing communication specifies at least one selected route along which the second network device forwards outbound data and at least one non-selected network route along which the second network device does not forward outbound data; setting a source address filter within the first network device with a source address to permit the first network device to forward inbound data originating from a source along the non-selected route and corresponding to the source address in response to the received routing communication; receiving the inbound data originating from the source along the non-selected route from the second network device; applying the source address filter to compare a source address defined within the inbound data originating from the source along the non-selected route to the source address set within the source address filter; forwarding the inbound data in accordance with routing information of the first network device only when the source address defined within the inbound data originating from the source along the non-selected route matches the source address set within the source address filter; and dropping the inbound data when the source address defined within the inbound data originating from the source along the non-selected route does not match the source address set within the source address filter.