Abstract: There is provided a method of traffic management in a communication network, such as a Metro Ethernet network, in which communication resources are shared among different virtual connections each carrying data flows relevant to one or more virtual networks and made up of data units comprising a tag with an identifier of the virtual network the flow refers to and of a class of service allotted to the flow, and in which, in case of a congestion at a receiving node, a pause message is sent back to the transmitting node for temporary stopping transmission. For a selective stopping at the level of virtual connection and possibly of class of service, the virtual network identifier and possibly also the class-of-service identifier are introduced in the pause message.