Method and system for automatic discovery of Ethernet link

Abstract

The invention discloses a method for automatic discovery of an Ethernet link, the method adds network elements in a network management system and obtains and saves information of the added network elements and the information of ports of the network elements, and the method comprises the steps of obtaining the port which starts an operation, administration and maintenance (OAM) protocol in the origin network element, starting OAM nodes of the ports of the origin network element of the OAM protocol by polling, obtaining a media access control (MAC) address of the opposite network element, searching out the opposite network element according to the MAC address of the opposite network element, ergodic processing the ports in the opposite network element, searching the port of the opposite network element which corresponds to the MAC address of the origin network element and establishing a physical link of the origin network element and the opposite network element according to the obtained port of the origin network and the port of the opposite network element. Accordingly, the invention provides a system for automatic discovery of the Ethernet link, which comprises a network management module and a port management module. Therefore, the method and the system can automatically discover the full-network physical link and present to a user by topology.

Description

technical field [0001] The invention relates to a network management system, in particular to a method and system for automatic discovery of Ethernet links. Background technique [0002] At present, the automatic discovery of Ethernet links in the network management of most communication equipment manufacturers is realized based on the IP address, that is, the layer-3 port. For example, after adding a network element, the network management will poll all the layer-3 ports of the network element. Port, to display the layer-3 topology network on the topology map. This method cannot intuitively display the physical connection relationship of the actual device, and every time a layer-3 port is created, the link topology will change. Some data devices require Thousands of Layer 3 ports are created, resulting in very large and complicated topology links. [0003] In the prior art, although Link Layer Discovery Protocol (LLDP, Link Layer Discovery Protocol) can also be used for au...

AI Technical Summary

Problems solved by technology

However, this patent application uses the routing table to automatically discover the network topology, and can only discover the logical links of the third layer, and cannot discover the physical links of the second layer.

For Layer 2 switch devices, if there is no routing table, the network topology cannot be discovered

Moreover, the network topology automatically discovered through the routing table cannot visually display the physical connection relationship of the actual equipment

[0004] As another example, the Chinese patent application number "200810216566.2" proposes a method of automatically searching for a Layer 2 Link Discovery Protocol (LLDP) message by sending, processing, and forwarding the message in the network. Discover and establish the MAC routing information table, but the patent application exists that the device must support the LLDP protocol, but many low-end switch devices do not support the LLDP protocol, so it is impossible to automatically discover the physical links of the entire network

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