A. F. Hansen, O. Lysne, T. Cicic, and S. Gjessing (2007)
Fast Proactive Recovery from Concurrent Failures
In: IEEE International Conference on Communications (ICC 2007), ed. by IEEE, IEEE
Recovery of traffic in connectionless pure IP networks
has traditionally been handled by a full re-convergence of
the network state. This process operates in a time scale that is not
compatible with new real time and highly dependable services.
Recently, schemes for fast local and proactive recovery in connectionless
IP networks have been proposed. All these schemes are
designed to guarantee recovery of the failure of one component.
As IP protocols are used to carry more highly dependable services
and new wireless infrastructures are approaching, guaranteed
failure coverage of more than one failure becomes necessary. In
this paper we present and evaluate a scheme that guarantees to
handle any two concurrent failures in a network. We are not
aware of any other schemes that addresses such guarantees. We
evaluate and compare it with other known recovery schemes, and
we show how it gives substantially better recovery success rates
than the schemes designed for one fault tolerance, also for more
than two failures.
