Software-Defined Networks for Optical Networks Using Flexible Orchestration: Advances, Challenges, and Opportunities

Table 5

Pros and cons of standard architecture table summary.

Pros	Cons
Best fit for less complex networks	Limited flexibility and service provisioning
Cost-effective	Issues with bandwidth on demands
Balances the speed of optical networks and the flexibility in SDNs	Difficulty in making intelligent decisions as the network becomes more complex
	Power consuming when the centralized network has lots of loads/burdens
	Not compatible with current ROADM devices (CDC ROADMs)