Fast Failure Detection in Multipoint Networks

Authors:
Wouter Tavernier;Dimitri Papadimitriou;Bart Puype;Didier Colle;Mario Pickavet;Piet Demeester
Affiliations:
IBCN - IBBT, Department of Information Technology, Ghent University, Gent, Belgium B-9050;Alcatel-Lucent Bell, Antwerpen, Belgium B-2018;IBCN - IBBT, Department of Information Technology, Ghent University, Gent, Belgium B-9050;IBCN - IBBT, Department of Information Technology, Ghent University, Gent, Belgium B-9050;IBCN - IBBT, Department of Information Technology, Ghent University, Gent, Belgium B-9050;IBCN - IBBT, Department of Information Technology, Ghent University, Gent, Belgium B-9050
Venue:
IPOM '09 Proceedings of the 9th IEEE International Workshop on IP Operations and Management
Year:
2009

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Abstract

Bridged Ethernet and IP routing and forwarding are without any doubt the most deployed network technologies, mainly because of their robust, low-cost and easy-to-deploy-character. Solutions to provide fast recovery over these technologies are thus a highly desired feature. Fast recovery not only needs a fast switchover (e.g. using IP-FastReRoute), but also requires fast failure detection. However, few efficient failure detection mechanisms are available over Ethernet networks, i.e. multi-access broadcast capable networks. We present an efficient multipoint Bidirectional Forwarding Detection (BFD) scheme running directly over Ethernet. We prove its value through emulation and evaluate its time performance and resource consumption.