New Bandwidth Management Framework for Supporting Differentiated Services in MPLS Networks
This paper presents a new bandwidth management framework supporting Differentiated Services aware traffic Engineering (DSTE) in the Multi-Protocol Label Switching (MPLS). Our bandwidth management framework contains mute computation, bandwidth allocation and preemption for Label Switched Paths (LSPs). We put forward two algorithms. The first one, named bandwidth preemption algorithm, dedicated for the Maximum Allocation Model and in which preemption is conducted in two dimensions: Class Type and priority levels within a same CT. Furthermore, we design a second algorithm named LSP preemption algorithm to select the most appropriate LSPs to be cast out. Selection decision is made on the basis of several citeria: the precedence level, the number of LSPs to preempt and the excess of bandwidth to gain. Extensive simulation study is carried out to evaluate the performance of our approach. Compared with existing ones, our algorithm improves not only bandwidth efficiency but also robustness and fairness. It achieves significant performance improvement for the well-behaving traffic classes in term of bandwidth link utilization, bandwidth blocking, and LSPs preemption.
Afef Kotti Rached Hamza Kamel Bouleimen
TECHTRA Research Unit Higher School of Communication of Tunis,Tunisia TECHTRA Research Unit Higher School of Communication of Tunis, Tunisia
国际会议
The International Conference on Communication Software and Networks(2009 IEEE通信软件与网络国际会议 ICCSN 2009)
成都
英文
762-767
2009-02-20（万方平台首次上网日期，不代表论文的发表时间）