A lightpath is deļ¬ned as point to point optical circuit based on wavelength division or time division multiplexing that has a deterministic
behavior and guaranteed bandwidth. Unlike a typical routed connection it's all yours and is not subject to the changing demands of others. In general lightpaths are only practical for very high bandwidth applications such as large ongoing data transfers from a detector to a remote site. In the case of HEPnet Canada we have established a series of lighpath connections to support ATLAS Canada.