Wyniki wyszukiwania - BazTech

Ograniczanie wyników

1 Image Processing & Communications

1 2017

Znaleziono wyników: 1

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: Border Gateway Protocol Link State

Sortuj według:

Ogranicz wyniki do:

Sdn-based wan optimization: pce implementation in multi-domain mpls networks supported by bgp-ls

Rzym G., Wajda K., Chołda P.

Image Processing & Communications

2017

Vol. 22, no. 1

35--47

In order to pro vide efﬁcient and ﬂexible resource management and path set-up in high-speed MPLS/GMPLS networks, the PCE (Path Computation Element) architecture was proposed by IETF. Implementation of a central module for the path set-up enables network operators to run path establishment operations for applications with explicitly deﬁned objective functions and QoS requirements. The paper reports on recent research and experimental investigations with PCE-based path computation performed according to the 3-layered trafﬁc engineering(TE)system consisting of: (1) a PCE module equipped with the IBM Cplex LP solver used in the highest layer 3, and (2) a SDN controller in the intermediate layer 2 responsible for transferring path set up request stowards virtual routers In the lowest layer 1. The presented results show usefulness of the PCE-supporting architecture with an SDN controller and applicability of bandwidth-oriented optimization based on real-time focused constraints (path delay limits). We emphasise that even a simple optimization approach shows the power provided by the SDN, i.e., ﬂexibility of ﬂows. This property is in practice not feasible In classical IP o rMPLS networks,that is the usage of ﬂow-based routing provided by network programmability really opens opportunities in network tuning.