Smart Routing Sample Clauses

Smart Routing. By design, Smart Routing is an IoT6 component in its own right, and not actually a part of the IoT6 Gateway, as the latter is only concerned with providing access to legacy devices, and augmenting them with some “local” intelligence. However, in the context of the distribution of intelligence test environment, both these components are deployed on the Smart Board, and the Smart Routing is primarily used for content-based routing of sensor values, on the same level of abstraction in which the IoT6 Gateway operates. We shall therefore briefly describe the function of Smart Routing in the intelligence distribution tests in this section. Smart Routing as presented in Deliverable 3.2 basically works by adding routing hints to messages, which are interpreted by the Smart Router component. For now, and in the setup of the intelligence distribution tests, those hints are embedded in the standard IPv6 packet header, specifically in the Traffic Class and Flow Label fields. The message is not directly sent to one of a set of potential receiver addresses, but instead to the Smart Board. Certain value combinations in the packet header indicate to the Smart Router component running on the Smart Board to which destination address the packet in question should be forwarded. This mechanism is part of the distribution of intelligence, in the sense that the routing decision is not made at a central router, but instead based on routing hints provided by individual senders, in the chosen use case corresponding to a temperature sensor. That way, the router needs not to be equipped with the associated domain knowledge to interpret any possible message it might encounter. Instead, the hints are set by the network nodes that generate the messages and therefore have the required domain knowledge. The Smart Router itself then merely knows what destination addresses are associated with a particular routing CMS IoT6 device: temperature sensor 0x2/0xAA Smart Router 0x3/0xBB Safety Server Figure 3: Smart routing overview hint. In the intelligence distribution test setup, the temperature sensor periodically sends a value to the CMS via the Smart Board. Once the current value exceeds a pre-defined limit, it sets the routing hint – in this case, a particular combination of traffic class and flow label – to indicate that there is an out-of-range problem. The Smart Router then inspects the packet and – finding the routing hint – forwards it to the safety server instead of the CMS which would...