A data center (DC) is supposed to efficiently distribute the bandwidth of the network to provide high-quality traffic transmission. However, the load imbalance issue can easily occur due to the complex topology and traffic features. Equal-Cost Multi-Path(ECMP) distributes traffic on different paths but doesn’t consider network congestion. Although HULA solved some of ECMP’s problems, it can easily congest the best path. RPS randomly distributes packets on paths, which can easily lead to packet disorder in some scenarios. This paper presents DHLB, a distributed hop-by-hop load balancing archetucture based on in-band network telemetry. With active In-band network telemetry, DHLB collects the necessary load information and stores it in the load information table. DHLB distributes traffic proportionally on different paths based on their load degree. We build a fat tree topology on mininet to verify the performance of our design. From experimental results, DHLB performs better than other schemes in terms of average flow complete time(FCT). It also performs better on additional overhead than another probe-based scheme.

IFR forecasts and the conducted literature analysis prove that part of the research should be focused on adapting the companion robot to moving around in open space in external conditions. There is a visible interest in the use of robotic devices in the care and assistance of the elderly or disabled people. However, the external environment still contains many obstacles and barriers. According to the authors, the solution to some of the problems related to movement in outdoor conditions would be to communicate the companion robot with the road infrastructure, inter alia, via IoRT (Internet of Robotic Things). This is why the purpose of this article is to present the concept of communication of the companion robot with the road infrastructure.

A document by Lizandro de Sousa Santos. Click on the document to view its contents.