AIC'07 Proceedings of the 7th Conference on 7th WSEAS International Conference on Applied Informatics and Communications - Volume 7
Transparent VPN failure recovery with virtualization
Future Generation Computer Systems
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This paper proposes the concept of a fault-tolerant virtual private network (FVPN) within an autonumous system 驴 a framework for supporting seamless network fail-over by leveraging the inherent redundancy of the underlying Internet infrastructure. The proposed architecture includes an application-level module, which is integrated into gateways at VPN end-points. This module enables fail-over to a redundant path without waiting for the underlying routing protocol converging to a new route. The paper introduces two algorithmsfor establishing redundant backup paths while minimizing overlapping network links. The proposed schemes are evaluated using topology information and sample routing logs from a regional Internet service provider network.