Optical Networking Systems IP Management Solutions

Chapter 2. Node Addressing Schemes

You learned in Chapter 1, “Introduction,” that an ONS node has only one IP address for the entire node (also called the NE address). You were also introduced to the basic IP configurations of an ONS node: IP address, subnet mask, and default router. In addition, you saw that an ONS NE can be either a GNE or an ENE, depending on whether the LAN interface is active. GNE plays an important role in DCN communications as it forwards or relays traffic between the LAN interface and one or more DCC interfaces.

When one or more NEs are connected and attached to the DCN, how they are addressed affects connectivity. This chapter discusses different ways of grouping NEs (subnetting) for GNEs and ENEs. Specifically, ...