10.4. Routing with Constraints
As discussed earlier in the chapter, routing in optical networks needs to be cognizant of different resource types and resource constrains. In particular, types and capabilities of optical links and switching nodes are of interest. Also important are some of the optical constraints that need to be met for error-free data transfer over the connections. In the following, we discuss some of the important resources, and the associated characteristics and constraints.
10.4.1. Link Characteristics
10.4.1.1. ENCODING, SWITCHING CAPABILITY, AND CAPACITY AVAILABILITY
A node computing an end-to-end path needs to know the characteristics of different types of links that are available. Some of the parameters that define the ...