Computing scores of forwarding schemes in switched networks with probabilistic faults

G. Avni, S. Goel, T.A. Henzinger, G. Rodríguez Navas, in:, Springer, 2017, pp. 169–187.

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Conference Paper | Published | English
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Series Title
LNCS
Abstract
Time-triggered switched networks are a deterministic communication infrastructure used by real-time distributed embedded systems. Due to the criticality of the applications running over them, developers need to ensure that end-to-end communication is dependable and predictable. Traditional approaches assume static networks that are not flexible to changes caused by reconfigurations or, more importantly, faults, which are dealt with in the application using redundancy. We adopt the concept of handling faults in the switches from non-real-time networks while maintaining the required predictability. We study a class of forwarding schemes that can handle various types of failures. We consider probabilistic failures. We study a class of forwarding schemes that can handle various types of failures. We consider probabilistic failures. For a given network with a forwarding scheme and a constant ℓ, we compute the {\em score} of the scheme, namely the probability (induced by faults) that at least ℓ messages arrive on time. We reduce the scoring problem to a reachability problem on a Markov chain with a "product-like" structure. Its special structure allows us to reason about it symbolically, and reduce the scoring problem to #SAT. Our solution is generic and can be adapted to different networks and other contexts. Also, we show the computational complexity of the scoring problem is #P-complete, and we study methods to estimate the score. We evaluate the effectiveness of our techniques with an implementation.
Publishing Year
Date Published
2017-03-31
Volume
10206
Page
169 - 187
Conference
TACAS: Tools and Algorithms for the Construction and Analysis of Systems
Conference Location
Uppsala, Sweden
Conference Date
2017-04-22 – 2017-04-29
ISSN
IST-REx-ID

Cite this

Avni G, Goel S, Henzinger TA, Rodríguez Navas G. Computing scores of forwarding schemes in switched networks with probabilistic faults. In: Vol 10206. Springer; 2017:169-187. doi:10.1007/978-3-662-54580-5_10
Avni, G., Goel, S., Henzinger, T. A., & Rodríguez Navas, G. (2017). Computing scores of forwarding schemes in switched networks with probabilistic faults (Vol. 10206, pp. 169–187). Presented at the TACAS: Tools and Algorithms for the Construction and Analysis of Systems, Uppsala, Sweden: Springer. https://doi.org/10.1007/978-3-662-54580-5_10
Avni, Guy, Shubham Goel, Thomas A Henzinger, and Guillermo Rodríguez Navas. “Computing Scores of Forwarding Schemes in Switched Networks with Probabilistic Faults,” 10206:169–87. Springer, 2017. https://doi.org/10.1007/978-3-662-54580-5_10.
G. Avni, S. Goel, T. A. Henzinger, and G. Rodríguez Navas, “Computing scores of forwarding schemes in switched networks with probabilistic faults,” presented at the TACAS: Tools and Algorithms for the Construction and Analysis of Systems, Uppsala, Sweden, 2017, vol. 10206, pp. 169–187.
Avni G, Goel S, Henzinger TA, Rodríguez Navas G. 2017. Computing scores of forwarding schemes in switched networks with probabilistic faults. TACAS: Tools and Algorithms for the Construction and Analysis of Systems, LNCS, vol. 10206. 169–187.
Avni, Guy, et al. Computing Scores of Forwarding Schemes in Switched Networks with Probabilistic Faults. Vol. 10206, Springer, 2017, pp. 169–87, doi:10.1007/978-3-662-54580-5_10.
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