By Topic

Reliable and fast rerouting mechanism for a protected label switched path

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Hundessa, L. ; Dept. d''Arquitectura de Computadors, Univ. Politecnica de Catalunya, Barcelona, Spain ; Domingo-Pascual, J.

We present a reliable, fast and efficient mechanism for rerouting traffic when there is a link/node failure or congestion problem in multiprotocol label switching (MPLS) networks. This proposal is able to guarantee rigorous QoS criteria for high-priority data traffic by eliminating packet loss and disorder, and minimizing packet delay. This directly translates into an improvement of important quality measure attributes, such as performance, reliability and fault tolerance, in MPLS-based networks. We use a predefined, alternative label switched path (LSP) in order to restore traffic (protection switching or fast rerouting). A theoretical model is formulated for the failure scenario in a protected LSP segment and we validate it through simulations using the MPLS network simulator (MNS). Further simulations show that our mechanism is able to eliminate packet loss and disorder completely while reducing the full restoration time. The potential cost in terms of the important issue of buffer requirements is also studied. Even for the worst case, buffer requirements are well within justifiable limits for guaranteeing QoS for high-priority data traffic in protected LSPs. The combination of these improvements helps to minimize the effects of link failure. This facilitates satisfying rigorous QoS requirements, increasing the throughput, rapid release of network resources and enhancement of the end-to-end performance of MPLS networks.

Published in:

Global Telecommunications Conference, 2002. GLOBECOM '02. IEEE  (Volume:2 )

Date of Conference:

17-21 Nov. 2002