Contents

Introduction

A growing interest exists in the networking community to assess the network vulnerability under unfortunate disasters provoking multiple failures. For these cases, complete network recovery is considered an unreachable target, and the interest shifts to evaluating which recovery schemes allows a larger portion of the traffic to survive. This report is suitable for this purpose. The user defines the SRGs in the network, identifying the set of multiple failure scenarios to consider. Then, the report estimates, for a given recovery scheme, the fraction of network traffic that survives in each case.

Contrary to the availability report, here only single failure states are simulated, where each failure state is given by a SRG going down, and all failure states have the same probability to occur.

Definitions and conventions about failure states, availability, and so on, are the same as for the availability report.

Information tables

Per-demand availability

#perDemandInfo#

Network-wide availability

#networkInfo#

References

[1] V. Sharma and F. Hellstrand (Eds.), "Framework for Multi-Protocol Label Switching (MPLS)-based Recovery", RFC 3469, 2003.
[2] J. Wang, L. Sahasrabuddhe and B. Mukherjee, "Path vs. Subpath vs. Link Restoration for Fault Management in IP-over-WDM Networks: Performance Comparisons Using GMPLS Control Signaling", IEEE Communications Magazine, vol. 40, no. 11, pp. 80-87, 2002.