An Automated Mechanism of IP Topology Discovery in BcN

Network topology represents the interconnection between directly or indirectly connected devices in a network. To know about up-to-date network topology (i.e. layer2 and layer3) is important for efficient network management. In this paper, we propose an automatic topology discovery mechanism of centralized network in NGN. The discovered topology is about IP logical topology instead of physical topology. Our mechanism has two assumptions. One is that the discovered nodes are located in transit area only. Another is that layer2 devices do not display.