Optical Networks: Architecture and Survivability
Optical Networks: Architecture and Survivability
Design and Implementation of RSVP Based on Object-Relationships
NETWORKING '00 Proceedings of the IFIP-TC6 / European Commission International Conference on Broadband Communications, High Performance Networking, and Performance of Communication Networks
Fault-Tolerant IP and MPLS Networks
Fault-Tolerant IP and MPLS Networks
Generalized multiprotocol label switching: an overview of routing and management enhancements
IEEE Communications Magazine
Control plane design for reliable optical networks
IEEE Communications Magazine
RSVP: a new resource reservation protocol
IEEE Communications Magazine - Part Anniversary
Recovery from control plane failures in the LDP signalling protocol
Optical Switching and Networking
Experiences in implementing an experimental wide-area GMPLS network
IEEE Journal on Selected Areas in Communications - Part Supplement
Performance analysis of an RSVP-capable router
IEEE Network: The Magazine of Global Internetworking
Recovery of the control plane after failures in ASON/GMPLS networks
IEEE Network: The Magazine of Global Internetworking
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The Resource Reservation Protocol for Traffic Engineering (RSVP-TE) must recover its state after a control plane failure so that the established connections in the data plane continue to be provided full services, are not disrupted by new connection setup requests, and survive any data plane failures. We outline the RSVP-TE Graceful Restart (GR) mechanism defined by the IETF. In this paper, we provide a comprehensive survey of the information that may be carried by RSVP-TE signaling messages when a connection is to be established and the state information that is stored in an RSVP-TE signaling module. We then propose an enhancement for RSVP-TE GR to alleviate the requirement of local recovery of the data plane state. Our proposal includes a two-step RSVP-TE state recovery, which uses a fast recovery to recover the RSVP-TE state in which labels were idle before a control plane failure and a detailed recovery to recover all of the RSVP-TE state. The fast RSVP-TE state recovery is realized as an extension to the RSVP-TE Hello mechanism, allowing a restarting node to process new connection setup requests as quickly as possible without interfering with existing connections. The detailed RSVP-TE state recovery generally follows RSVP-TE GR with minor modifications that can be performed in the background in parallel with normal RSVP-TE operations for connection setup and removal. Our performance evaluations show that our proposal shortens the waiting time for new connection setups being processed by a restarting node.