Within the STOLAS project, an orthogonal optical labeling scheme using Frequency Shift Keying modulation for the 155 Mbit/s label and intensity modulation for the 10 Gbit/s payload data is being explored. This scheme enables to improve the throughput of packet-switched networks by efficient label processing and all-optical routing of packet bursts. The paper will address the networking aspects of this novel labeling scheme, the key components for implementing it, some first experimental results, and the prospects for application in future high-capacity optical packet-switched networks.