By Topic

Evaluation of DiffServ-aware constraint-based routing schemes for multiprotocol label switching networks

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

3 Author(s)
Kimura, T. ; NTT Service Integration Labs., NTT Corp., Tokyo, Japan ; Kamei, S. ; Okamoto, T.

Differentiated services (DiffServ) and multiprotocol label switching (MPLS) are attracting attention as quality of service (QoS) technologies for the large-scale Internet. DiffServ cannot offer end-to-end QoS by itself, because it controls per-hop packet forwarding order with relative priority according to its class. Achieving end-to-end QoS requires traffic engineering support by using MPLS and constraint-based routing (CBR) schemes in addition to DiffServ. CBR schemes compute explicit routes for label-switched paths (LSPs), which specify packet forwarding routes in MPLS networks. We assume two DiffServ classes: expedited forwarding (EF) class, which corresponds to voice traffic requiring a low path delay, and best effort (BE) class which corresponds to data traffic requiring high throughput. Five DiffServ-aware CBR schemes are constructed, based on route computation algorithms and LSP-types depending on whether or not DiffServ classes are considered. By simulating a path arrangement for two class traffic between every node pair, we evaluate the QoS achieved by the five DiffServ-aware CBR schemes. The results show that the scheme that uses a different route computation algorithm for each DiffServ class can offer better QoS for each class.

Published in:

Networks, 2002. ICON 2002. 10th IEEE International Conference on

Date of Conference:

2002