(EN) Relating to the field of communication technology, a method and a node for constructing management and maintenance channels are provided. The embodiments of the present invention include: first, each node in a network obtains the topology information of the network by applying an extended designated protocol; then, according to the obtained topology information of the network, each node in the network determines the broadcast tree from edge nodes to each node via a predetermined algorithm and configures the ports of the broadcast tree dynamically, wherein the broadcast tree is used to transmitting management and maintenance messages. The embodiments of the present invention enable, for a two-layer network with any kind of topology, each node in the network to construct management and maintenance channels automatically without manual configuration so that the plug and play capabilities of devices are enabled. In addition, the embodiments of the present invention perform port insulation at each output port of the broadcast tree in management Virtual Local Area Network (mVLAN) so that the management and maintenance massages can be only transmitted between the output ports and the input ports of the broadcast tree, therefore ensuring network device operation safety and reliability.
(ZH)
一种管理维护通道的构建方法及节点，涉及通信技术领域。本发明实施例包括：首先，网络中各节点通过运行扩展后的特定协议获取网络中的拓扑信息；然后网络中各节点根据获取的网络中的拓扑信息通过预定的算法确定边缘节点到各节点的广播树，并根据所述拓扑信息动态配置在所述广播树的端口，所述广播树用于传播管理维护报文。本发明实施例对于任何拓扑结构的二层网络可以实现网络中各节点自动构建管理维护通道，无需人工配置，从而实现了设备的即插即用，并且对广播树的各个出端口在mVLAN上进行端口隔离使得管理维护报文只能在该广播树的入端口和出端口之间进行转发，确保了网络设备的安全和可靠运行。
