Redirecting traffic via tunnels to discovered data aggregators

摘要

In one embodiment, a data aggregator discovery (DAD) message may be distributed by an associated data aggregator, the DAD message identifying the initiating data aggregator, and comprising a recorded route taken from the data aggregator to a receiving particular node as well as a total path cost for the particular node to reach a root node of the DAG through the recorded route and via the data aggregator. The receiving particular node determines a path cost increase (PCI) associated with use of the data aggregator based on the total path cost as compared to a DAG-based path cost for the particular node to reach the root node via the DAG. If the PCI is below a configured threshold, the particular node may redirect traffic to the data aggregator as source-routed traffic according to the recorded route. The traffic may then be aggregated by the data aggregator, accordingly.

主权项

1. A method, comprising:
generating a data aggregator discovery (DAD) message by a data aggregator in a directed acyclic graph (DAG) of a computer network, the DAD message identifying the data aggregator as being a node that aggregates data and configured to carry a recorded route taken from the data aggregator to corresponding receiving nodes as well as a total path cost including at least one hop for the corresponding receiving node to reach a root node of the DAG through the recorded route and via the data aggregator, wherein the data aggregator is a node between a root node and a destination address node in the computer network that is equipped with sufficient memory to handle an aggregation task; distributing, by the data aggregator, the DAD message into the computer network without regard to the DAG; receiving, at the data aggregator, redirected traffic from one or more of the corresponding receiving nodes, the received redirected traffic being source-routed traffic according to the recorded route in the DAD message; and aggregating, by the data aggregator, the redirected traffic.