Software-defined networking (SDN) is rapidly changing the landscape of network technology. By decoupling the control and data planes in network switches and routers, SDN provides increased agility in the optimization of switching and routing protocols and equipment. The SDN applications are built on top of a centralized controller, which enables the straightforward implementation of additional intelligent applications and services. This provides network administrators with an unparalleled ability to manage the underlying switches from the centralized controller.
In a new white paper from Aricent, “Demystifying Routing Services in Software-Defined Networking,” it is argued that the routing decision process and routing protocols can be improved with an intelligent, OpenFlow-based routing service application. This application provides centralized control while offering a global view of the entire system of OpenFlow switches connected to the same OpenFlow Controller in an OpenFlow island. This design enables the determination of the shortest routes between any two OpenFlow data paths and provides far more efficient network traffic.
In traditional routing protocols, route selection decisions provide a single, optimum route to a specified group of destination points. In the instance that several routes exist to the same destination sharing the same degree of preference, a tie-breaking algorithm determines the single route for inclusion in the Routing Information Base. The Aricent white paper contends that the Routing Service application provides such benefits as the ability to adjust routing paths based on network load/congestion or path quality. The OpenFlow-based Routing Service application can select multiple routes to the same destination and allow load balancing across these different routes chosen for the same destination. In addition, the application will pre-calculate the alternate traffic path and assign priority based on the quality of the link and the inherent cost.
The importance of the Routing Service application cannot be understated. Implementation increases network agility by providing traffic path alternatives. The Aricent white paper clearly identifies those network inefficiencies that ultimately can be remedied by the addition of the Routing Service application. Not only is network performance and update capability enhanced, as demonstrated, there is the benefit of reducing operating expenses and simplifying the complexities of traditional routing protocols.
Aricent’s Intelligent Switching Solution (ISS) is a key component of more than 100 commercial products deployed across the world. The ISS can be used to build SDN-ready data center and enterprise switches.
To learn more about the value of the certain routing protocols, download the Aricent white paper, “Demystifying Routing Services in Software-Defined Networking” now.