Loop-free traffic engineering with path protection in MPLS VPNs

Authors:
Mort Naraghi-Pour;Vinay Desai
Affiliations:
Department of Electrical and Computer Engineering, Louisiana State University, Baton Rouge, LA 70803, USA;Department of Electrical and Computer Engineering, Louisiana State University, Baton Rouge, LA 70803, USA
Venue:
Computer Networks: The International Journal of Computer and Telecommunications Networking
Year:
2008

Citing 4
Cited 1

Traffic engineering for MPLS-based virtual private networks

Computer Networks: The International Journal of Computer and Telecommunications Networking
Approximating optimal spare capacity allocation by successive survivable routing

IEEE/ACM Transactions on Networking (TON)
Loop-free path restoration with QoS and label constraints in MPLS networks

Journal of High Speed Networks
Building reliable MPLS networks using a path protection mechanism

IEEE Communications Magazine

Wireless mesh network security: A traffic engineering management approach

Journal of Network and Computer Applications

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Abstract

In this paper we present a new approach for VPN (virtual private network) traffic engineering with path protection in Multiprotocol Label Switching networks carrying QoS and best effort traffic. Our approach eliminates the path cycles, a problem often encountered in link-based traffic engineering methods. It also allows for control of the maximum path length and the size of the label space in each label switch router. We consider off-line computation of the working and backup paths using a link-based approach. Two cases of 1+1 and 1:1 path protection are considered. Numerical results are presented to show the efficacy of the algorithm in calculating link-disjoint and node-disjoint primary and backup paths for the QoS traffic.