A method in a Maintenance Association Endpoint, MEP, for controlling traffic between a first network element and a second network element connected by a working Traffic Engineering Service Instance, TESI, and a protection TESI. The first network element sets a Traffic field in a Connectivity Check Message,...http://www.google.com/patents/US20110026397?utm_source=gb-gplus-sharePatent US20110026397 - CONNECTIVITY FAULT MANAGEMENT TRAFFIC INDICATION EXTENSION