| 摘要 |
<p>A method to resolve congestions in a telecommunication network, preferably an IP Network, comprising interconnected nodes (PE.A, PE.B, PE.C) coupled to a Network Manager (NM). Each node is coupled to a distinct Customer Equipment (CE.A, CE.B, CE.C) at a corresponding site (Site A, Site B, Site C), and a congestion problem is indicated (1) by a trigger received at the network manager (NM) from the site (e.g. Site B) involved in the congestion. The trigger comprises a Network Event Notification indicating the service level agreement for a predetermined traffic class (QoS) from another site (Site A) to the congested site (Site B). Upon reception of the trigger, the network manager retrieves (2) from the node (PE.B) coupled to the congested site (Site B) traffic statistics for the predetermined traffic class. In case the traffic statistics indicate that the number of lost packets for the traffic class has increased for this node (PE.B), the network manager updates (3b) the policy configuration of the downstream link between this node (PE.B) and the Customer Equipment (CE.B) of the congested site (Site B). Otherwise, the network manager updates (3a) the policy configuration of the upstream link between the other Customer Equipment (CE.A) and the other node (PE.A) coupled thereto. The trigger is provided by a Deep Packet Inspection (DPI.B) associated to the Customer Equipment (CE.B) of the congested site (Site B).</p> |
