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Research on Control Plane of LOBS/GMPLS Inter-Working Networks

Author: WangXiaoXia
Tutor: WuJian
School: Beijing University of Posts and Telecommunications
Course: Electromagnetic Field and Microwave Technology
Keywords: LOBS GMPLS SLP MLP Protection and Restoration BFD
CLC: TN929.1
Type: Master's thesis
Year: 2010
Downloads: 31
Quote: 2
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Abstract


The feature of next generation optical network is the ability to provide various QoS classified services to the traffics with diverse switching and transmission requirements.This paper is based on LOBS/GMPLS interworking network platform which may be a solution to NGN optical network. The in-depth study has been made to the control plane of the inter-working network and an optimized design has been proposed to support more service on the network. These improvements are believed to promote a wide deployment of inter-working networks and enhance network performance especially on delay, blocking rate, transmission reliability and so on.The major contributions of this paper can be summarized as follows:1)Currently, a design has been made to create end to end LSP on LOBS/GMPLS experimental platform named SLP mechanism.This paper has assessed the performance of SLP mechanism when applied to interworking network platform, and found that SLP has shortcomings for some delay-sensitive service.Based on this, an improved mechanism is proposed named MLP mechanism. This paper described the working principle and implementation steps of MLP in detail.By constructing an LOBS/GMPLS network testbed and conducting serial experiments on the testbed, the feasibility and effectiveness of the proposed MLP mechanism were evidently verified.The experimental results explain that MLP can avoid large delay and support delay-sensitive service better. Meanwhile experimental evaluation of TCP throughput has been done under SLP and MLP, higher throughput and more stability has been gained via MLP.2) Considering the survivability requirements of the transparent LOBS/GMPLS network, the specific protection and restoration schemes were proposed.On one hand, this paper focuses on survival strategies of LOBS network, specifically addressed the solution on control plane to achieve 1+1 protection of LOBS network. When LOS happened on current working path, it will automatically switch to the protection path to ensure safety and reliable of services.On the other hand, BFD dynamic fault detection mechanism has been introduced on LOBS network besides the existing protection and restoration strategies on GMPLS network, which can increase the sensitivity of the whole network.Experiments on LOBS/GMPLS testbed can verify that the proposed schemes is feasible.

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Wireless communications > Lightwave communications, laser communications
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