Routing in a MPLS network featuring preemption mechanisms
نویسندگان
چکیده
In the context of Multiprotocol Label Switching (MPLS), we propose an integration of a computationally efficient preemption mechanism into a very dynamic Label Switched Paths (LSPs) routing scheme described in a previous paper. This preemption scheme includes a quick heuristic able to select the most interesting LSPs to reroute from a link. The efficiency of this algorithm is obtained through a very rigid but seemingly appropriate policy concerning which LSPs are appropriate for preemption. A feedback from preemption on the routing process is proposed, in order to regulate the rate of the reroutings and to tune the balance between stability and continuous reorganization in a network. This integrated traffic engineering entity is tested on the accuracy of the heuristic, the relevance of the feedback and the whole integration, the influence of the routing policy on the preemption mechanism and the reliability of the managed network.
منابع مشابه
Using a Fuzzy Rule-based Algorithm to Improve Routing in MPLS Networks
Today, the use of wireless and intelligent networks are widely used in many fields such as information technology and networking. There are several types of these networks that MPLS networks are one of these types. However, in MPLS networks there are issues and problems in the design and implementation discussion, for example security, throughput, losses, power consumption and so on. Basically,...
متن کاملMinimizing re-routing in MPLS networks with preemption-aware constraint-based routing
The importance of providing bandwidth guarantees in packet backbone networks is increasing with the emergence of virtual private networks and mobile networks, where bandwidth requirements of aggregate packet flows with diverse characteristics have to be supported. Both in VPNs and in mobile networks traffic will be prioritized to support preemption of less important traffic. The Multiprotocol L...
متن کاملRouting and admission control issues for LSPs in MPLS networks
Increasing demand for multimedia and distributed applications in recent years has drawn renewed attention to Quality of Services (QoS) routing in IP/MPLS network. This paper presents several new algorithms to be implemented for that purpose. We look, in a first part of the problem at organizing the mapping of Label Switching Paths (LSPs) throughout the network such that we can compromise betwee...
متن کاملA New Preemption Avoidance and Load Balancing Policy for Traffic Engineering in Mpls Networks
The objective of traffic engineering is to optimize resource efficiency and network performance. Its study issue is to make the use of the available bandwidth in IP backbone networks effectively. MPLS (Multi-Protocol Label Switching) approach proposed by the IETF (Internet Engineering Task Force) is a new technology that facilitates significantly the process of traffic engineering. In MPLS netw...
متن کاملObject-Oriented Design and Implementation of Fault Management Function for MPLS network
In this paper, we propose a fault management with fast rerouting restoration scheme in MPLS network. The proposed scheme finds out the root cause of the occurred fault, and provides differentiated service with guaranteed QoS (Quality of Service) according to the differentiated backup path options. It can provide various backup path options, such as 1:1, 1:N or M:N fast-reroute by NMS, and opera...
متن کامل