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AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsJános Farkas, Vinicius Garcia de Oliveira, Marcos Rogério Salvador
Estimating the term…
A method and arrangement for discovering the physical topology of a telecommunication network having switches, routers, and a management node interconnected by links in a spanning tree and links to blocked interfaces. The management node broadcasts a ping message and adds replying nodes to the topology. The management node discovers the spanning tree by retrieving address forwarding tables from the switches, assigning them a ranking value, and connecting from the highest ranked nodes to successively lower ranked nodes. The management node discovers the blocked interfaces by configuring a VLAN to include the spanning tree and disabling the spanning tree protocol. The blocked interfaces are turned on and off while matching link down traps are noted and the corresponding links are discovered. Only basic management features of the switches are needed, and all nodes and links are discovered.
A method of discovering a physical topology of a telecommunication network having a plurality of nodes interconnected by physical links with a management node of a network management system (NMS), wherein the nodes include switches, routers, and bridges, and wherein the nodes have interfaces which utilize the spanning tree protocol to set up a spanning tree topology, the method comprising the steps of:
An arrangement in a management node of a network management system (NMS) for discovering a physical topology of a telecommunication network, the network having a plurality of nodes interconnected by physical links with the management node, wherein the nodes include switches, routers, and bridges which are configured with an IP address of the management node, and wherein the nodes have interfaces which utilize the spanning tree protocol to set up a spanning tree topology, the arrangement comprising:
Dependencies are inferred from the claim text.