Control and forwarding plane interaction in distributed routers

Authors:
Markus Hidell;Peter Sjödin;Olof Hagsand
Affiliations:
KTH – Royal Institute of Technology, Kista, Sweden;KTH – Royal Institute of Technology, Kista, Sweden;KTH – Royal Institute of Technology, Kista, Sweden
Venue:
NETWORKING'05 Proceedings of the 4th IFIP-TC6 international conference on Networking Technologies, Services, and Protocols; Performance of Computer and Communication Networks; Mobile and Wireless Communication Systems
Year:
2005

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Abstract

The requirements on IP routers continue to increase, both from the control plane and the forwarding plane perspectives. To improve scalability, flexibility, and availability new ways to build future routers need to be investigated. This paper suggests a decentralized, modular system design for routers, based on control elements for functionalities like routing, and forwarding elements for packet processing. Further, we present measurements on the distribution of large routing tables in an experimental platform consisting of one control element and up to 16 forwarding elements.