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Being widely adopted by worldwide service providers, the MPLS technology to connect geographically separated customer sites becomes important in reliability. It is used to implement VPNs to connect the customer networks i.e., Inter-provider VPN network. In this project we first briefly describe VPNs which are behind the scope of secure private MPLS connections such as several VPN deployments emerged...
Content Delivery Networks (CDNs) are able to improve user-oriented application performance through caching and anycast routing or DNS-based user mapping mechanism. With the fact that BGP is widely used for inter autonomous system (AS) routing for CDNs, there is a middle mile bottleneck problem, which cause by the nature limitation of BGP. To solve this problem, we propose an SDN-based tunnel multi-path...
Segment routing is an emerging traffic engineering technique relying on Multi-protocol Label-Switched (MPLS) label stacking to steer traffic using the source-routing paradigm. Traffic flows are enforced through a given path by applying a specifically designed stack of labels (i.e., the segment list). Each packet is then forwarded along the shortest path toward the network element represented by the...
With constant evolution of the Internet, many of its even well-established properties continue to change. This study re-evaluates the stability and diversity of Internet paths and whether it is affected by the widely deployed Multi-Protocol Label Switching (MPLS). In particular, using traceroutes between large number of source-destination pairs with the Internet Control Message Protocol (ICMP) extensions...
Traceroute is largely considered as the number-one tool when troubleshooting the network, with innumerable applications, such as pinpointing the routing deficiencies or detecting and locating network outages. Previous works have extensively investigated pitfalls and flaws causing the measurements performed with this tool to be inaccurate or incomplete. In this paper, we show how, even in the absence...
With the expected surge in the global IP traffic, service providers would need to adapt accordingly to operate disruption and loss free networks supported with the developing IP infrastructure. With the disposal of the hierarchical network structure, radio access networks are moving towards a flat-IP architecture and novel topological set-ups in the backhaul. Hence, a routing paradigm that employs...
There has been a rapid rise in the IP traffic throughout the Internet which takes advantage of the already established widespread IP infrastructure. Different suggestions are being explored to facilitate the next-generation access networks via IP mechanisms, with a growing trend towards a flat-IP structure and novel topological set-ups in the backhaul. Aligned with this evolution, there are increasingly...
Multi Protocol Label Switching (MPLS) Virtual Private Networks (VPNs) have seen an unparalleled increasing adoption in the last decade. Although their flexibility as transport technology and their effectiveness for traffic engineering are well recognized, VPNs are difficult to set up and manage, due to the complexity of configurations, to the number of involved protocols, and to the limited control...
Service implementation is done for providing different services to the customer. Layer3 virtual private network implementation using IPv4 and IPv6 routing protocol is done and with this policy is implemented using MP-BGP as exterior gateway protocol. Layer 3 virtual private network in internet protocol version 6 is known as 6VPE technology, which is implemented using BGP and layer 3 VPN (VPRN for...
In spite of their commercial success, Cloud services are still subject to two major weak points: data security and infrastructure resiliency. In this paper, we propose an original Cloud network architecture aiming at improving the resiliency of Cloud network infrastructures interconnecting remote datacenters. The main originality of this architecture consists in exploiting the principles of Software...
The functional deficiency of the Internet architecture enables attackers the ability to easily to spoof IP source address. The traditional signature-and-verification based anti-spoofing methods are often limited by essential process based on an explicit analysis and process of the IP header and does not adapt to incremental deployment. This paper designs a multi-fence countermeasure based inter-domain...
This paper presents a novel multipath routing concept for content-aware networks, enabling better resource utilization and end-to-end QoS provision. Based on random utility theory and traffic identification techniques it delves into multinomial-type probability for efficient packet distribution among intra domain paths, by exploiting the capability of edge nodes to identify the content in transit,...
The Internet explosion has drastically increased the bandwidth demand of modern telecommunication networks and as optical networks provide an opportunity for the future Internet, it is expected that Internet providers will gradually replace their infrastructures with optical networks. The Internet is a decentralized set of networks (more than 29.000) known as domains or Autonomous Systems on a well-known...
As a result of the higher speed of bandwidth communication link, routing forwarding node is drawing us more attention. IP switching technology has been approved on the basis of the various analysis of the IP switching technology. We can get the three-layer IP routing technology system, which can bring us the shorter interval while transmitting dates and enhance the stability to support the transition...
The appearance of new uses underlines the need for a greater quality of service (QoS) not only for conveying accurately or increasing a certain traffic, but also conveying it as soon as possible while holding management account of the resources networks (band-width), which implies a network management even more complex. These are the needs which gave birth to MPLS technology. Admittedly, the growth...
Many services provided over the Internet, like voice over IP and video on demand, increase the demand for assurances concerning the quality of the underlying network. A score of techniques for assurance of quality of service (QoS) have been devised for use within administrative domains. However, when paths cross the border of autonomous systems, assurance of end-to-end QoS remains an unsolved issue...
One of the main challenges in the Future Internet era will be the increase of QoS-demanding applications that need to be supported. Unavoidably, this will lead to increased traffic that has to be served by the deployed networks. Moreover, the energy consumption and the configuration/management complexity will be significantly increased, too. Current network infrastructures and their associated management...
One of the most common provider provisioned VPN technologies uses MPLS as a data plane for customer flow isolation and BGP as a control plane for routing between VPN sites. From a data plane perspective, such networks can provision hundreds of thousands of VPN sites. However, the BGP control plane is prone to scalability concerns. Some BGP routers in VPN backbones must handle routes for all the VPN...
Traffic Engineering (TE) broadly relates to optimization of the performance of a network. The Overlay approach has been widely used by many service providers for Traffic Engineering in large Internet backbones. In this approach logical connections are set up between edge nodes to form a full mesh virtual network on top of the physical topology. Instead of overlaying IP routing over the logical virtual...
Since its emergence the internet has been a significant part of today's modern living. Defined by its interconnections and routing policies, it has fuelled increased demands for provisioning of new more advanced services that are able to dynamically react to changes within the network. These services however, lead to enormous energy consumption in contrast to a global drive for a greener environment...
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