Traffic processing algorithms for the SIGnet metropolitan area network

Traffic processing algorithms are introduced for SIGnet (slotted interconnected-grid network), which is intended for local and metropolitan area backbone communication networks using multichannel optical transmission media. The design is motivated by the development of inexpensive multichannel capabilities based on dense wavelength division multiplexing (WDM) and future coherent optical systems. In SIGnet, the virtual topology is piecewise regular and permits bandwidth allocation and network evolution which is much more easily accomplished than in previous designs. SIGnet employs deflection routing to accommodate nonisochronous traffic. However, a multilink grid topology provides a closer match to the actual physical topology in many networks. This work includes an introduction to the network design and presents results obtained concerning the traffic processing algorithms which have been investigated