I2RS
Interface to Routing System

The IETF’s I2RS protocol is a potential solution for the Southbound API associated with the Software Defined Networking architecture. I2RS retains the use of traditional routing protocols such as OSPF (Open Shortest Path First) and BGP (Border Gateway Protocol) between network resources. The Southbound API is used as a mechanism to dynamically modify routing decisions to suit specific SDN Applications. However, normal routing decisions are still based on traditional routing protocols exchanged on an East-West basis between Network Resources.

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