PILEP: a contribution to PCE-based interdomain path computation


== Abstract ==

The process of computing routes that network traffic must follow throughout Internet has become more complex in the last years. Nowadays, this process is subject to the application of several constraints related to traffic engineering, resources management, quality of the offered services, security or robustness. The application of all these constraints has caused an increase of complexity of those nodes in charge of path computation. Sometimes, the amount of time and resources spent to compute routes is superior to resources used in the main task of these nodes: traffic classification and forwarding. PCE (Path Computation Element) architecture is being developed to diminish that problem in the context of constraint-based path computation for MPLS (Multiprotocol Label Switching). Although research work in relation to this topic is making progress quickly, there are still some unsolved aspects. As a contribution to PCE development, in this work we present a mechanism called PILEP (Procedure for Interdomain Location of External PCEs) that allows the dynamic discovery of routes computation elements in interdomain environments, making use of the existing routing


== Original document ==

The different versions of the original document can be found in:

* [https://upcommons.upc.edu/bitstream/2117/12929/1/Dominguez.pdf https://upcommons.upc.edu/bitstream/2117/12929/1/Dominguez.pdf] under the license https://creativecommons.org/licenses/by-nc-nd

* [http://xplorestaging.ieee.org/ielx5/4752631/4763663/04763712.pdf?arnumber=4763712 http://xplorestaging.ieee.org/ielx5/4752631/4763663/04763712.pdf?arnumber=4763712],
: [http://dx.doi.org/10.1109/netwks.2008.4763712 http://dx.doi.org/10.1109/netwks.2008.4763712] under the license cc-by-nc-nd

* [http://yadda.icm.edu.pl/yadda/element/bwmeta1.element.ieee-000004763712 http://yadda.icm.edu.pl/yadda/element/bwmeta1.element.ieee-000004763712],
: [https://upcommons.upc.edu/bitstream/handle/2117/12929/Dominguez.pdf;sequence=1 https://upcommons.upc.edu/bitstream/handle/2117/12929/Dominguez.pdf;sequence=1],
: [https://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=4763712 https://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=4763712],
: [https://www.researchgate.net/profile/M_Dominguez-Dorado/publication/241665338_PILEP_a_contribution_to_PCE-based_interdomain_path_computation/links/02e7e535e951305ac9000000.pdf https://www.researchgate.net/profile/M_Dominguez-Dorado/publication/241665338_PILEP_a_contribution_to_PCE-based_interdomain_path_computation/links/02e7e535e951305ac9000000.pdf],
: [https://academic.microsoft.com/#/detail/2012590063 https://academic.microsoft.com/#/detail/2012590063]