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A centralized controller to improve fault tolerance in TRILL-based fabric networks

Mamadou Tahirou Bah 1 Valentin del Piccolo 1 Manel Bourguiba Kamel Haddadou
1 Phare
LIP6 - Laboratoire d'Informatique de Paris 6
Abstract : Fault tolerance is a challenging requirement in virtualized data centers. While distributed layer 2 routing TRILL-like protocols are robust and scalable, they still lack efficiency upon a link failure. In this paper, we propose a hybrid architecture that achieves the best tradeoff between efficiency of centralized architectures and robustness of distributed ones. This architecture is based on a centralized controller that ephemerally configures the routing table with alternative paths already computed by the TRILL IS-IS protocol. This ephemeral entry enables service continuity while the TRILL. IS-IS recomputes the definitive route. The experimental evaluation shows that the recovery from the link failure is almost instantanious.
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Submitted on : Thursday, May 11, 2017 - 5:12:51 PM
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Mamadou Tahirou Bah, Valentin del Piccolo, Manel Bourguiba, Kamel Haddadou. A centralized controller to improve fault tolerance in TRILL-based fabric networks. Smart Cloud Networks & Systems (SCNS), Dec 2016, Dubai, United Arab Emirates. ⟨10.1109/SCNS.2016.7870564⟩. ⟨hal-01521444⟩



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