Patent ID: 9270598
Filing Date: 2016-02-23
CPC Classification: H04L

Claim Text:
1. A method, comprising: sensing, at a first node in a Named Data Networking (NDN) environment, congestion preventing an interest packet from being forwarded over a link to a second node; generating a prefix marker associated with a class of traffic to which the interest packet belongs; generating a negative acknowledgement (NACK) packet comprising the prefix marker, wherein the NACK packet indicates congestion for any interest packet in the class of traffic indicated by the prefix marker over any path that includes the link; and transmitting the NACK packet over intermediate nodes in the NDN environment towards a sender of the interest packet, wherein the intermediate nodes re-route any interest packet in the class of traffic indicated by the prefix marker over at least one non-congested path subsequent to receiving the NACK packet.