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MDNS based automatic discovery method in optical NMS

The optical network management system is very important for optical equipment monitoring and managing, the timeliness and accuracy are very critical parameters. Automatic discovery of network nodes is the embodiment of automation of network management system. However, most of the traditional automatic discovery method is based on the ICMP protocol, which is to ping all the IP addresses in local area network one by one, but it effects efficiency greatly consuming costing too much time. This paper proposes an automatic discovery method based on MDNS protocol in designed optical NMS, sending multicast message to all IP addresses in LAN, then the IP addresses with response are valid address. So in this way we can detect IP node and supported services more rapidly, brings about a vast improvement in the efficiency of optical network management system.