Telefonaktiebolaget Lm Ericsson (Publ)

Roberto Gallino

Fabio Poggi

A method of detecting physical connections between a root bridge node and layer-2 bridge nodes organised in a layer-2 cloud. The method comprises sending a query message from a sending port of the root bridge node and starting a timer set to a waiting interval. After the timer expired, if a response message to the query message is not received or is received at the sending port then only the sending port is associated with said layer-2 cloud. Alternatively, if a response message is received at a port other than the sending port then the sending port and the receiving port are associated with said layer-2 cloud. A bridge node and a layer-2 communications network are also disclosed.

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Alessandria, Italy

Roberto Gallino