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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...
A switch in a software-defined network (SDN) uses a flow table for packet forwarding. The flow table consists of flow entries decided by a controller. As user requests with a variety of data types have been dramatically increasing, a controller's CPU is overloaded to process those requests. The users may not obtain real-time data. Furthermore, the control plane might be overflowed by OpenFlow messages...
Multicast data delivery can significantly reduce traffic in operators' networks, but has been limited in deployment due to concerns such as the scalability of state management. This paper shows how multicast can be implemented in contemporary software defined networking (SDN) switches, with less state than existing unicast switching strategies, by utilising a Bloom Filter (BF) based switching technique...
Guided by the concept of the next generation broadcasting, China's broadcasting network is undergoing a migration from the DVB based system to an all IP-based one so that triple-play services can be delivered to enhance the competitiveness of the Chinese broadcasting service providers. This change happens primarily to the backbone networks, which are IP/MPLS based. The integrated services will introduce...
Based on Software Defined Network paradigm we apply the Network-as-a-Service model to build a data center network architecture well-suited to the problem of virtual networks embedding. This task is performed by the algorithm proposed in this paper, which is based on aggregated information from a virtual routing plane using the BGP protocol and a physical network topology based on Open Flow 1.3 devices...
Network resiliency has become one of the most concerns of services providers who aim to deploy real time applications and provide high availability for their customer. Several papers in the literature proposed solutions to improve protection schemes and to minimize network fault impact. This paper investigates performance evaluation of layer 2/3 protection mechanisms namely Fast Reroute-based mechanisms...
MPLS (Multiprotocol Label Switching) is one of the possible methods used to create a data circuit switching behavior even if the underlying telecommunication network is a routed/switched packet network. If inside the network there is a path hierarchy, the common approach is to transmit the entire label stack, using one label for each path in the hierarchy. For optimization, a single LSP (Label-Switched...
Generalized Multi-Protocol Label Switching (GMPLS)is an emerging technology which ensures reliable delivery of Internet services with high transmission speed and lower delays. High-bandwidth multicast applications are becoming widely popular, further driving the requirement for optical networks to support all types of traffic applications. Apart from this, a significant amount of data loss, packet...
Layer 1 mesh network architecture is proposed as KDDI's next generation packet optical transport network. We suggest it has effects both on saving CAPEX by not only IP but also L2 offloading and on totally increasing survivability.
The traditional IP routing protocols transfer traffic only according to destination, which is not fine-grained enough to satisfy the significant demands of quality-of-service (QoS) and traffic engineering, so fine-grained flow control techniques, such as Multiprotocol Label Switching (MPLS) [1], emerge. MPLS is the most widely used technique to do fine-grained flow control.
T-MPLS is a connection-oriented packet switched solution for the next generation transport networks. The concept was first proposed by ITU-T in Geneva, Feb 2006. The standardization process is pushed by ITU-T and IETF, many recommendations appeared recently. T-MPLS is much easier to achieve a convergent packet platform for any L2 protocol. It focuses on the packet transport applications that adhere...
The Differentiated Services architecture represents a highly scalable architecture for deployment of Quality of Services across the next-generation Internet. The Differentiated Services enable the packets that pass through network devices operating on layer 3 information, such as routers, to have their relative priority differentiated from one another. With Differentiated Services marking, Layer 3...
With the development of network technology, people's demand on real-time and multimedia feature of the network services has become more and more sophisticated, that requiring Quality of Service of Next Generation Networks with high features. Firstly, this thesis systematically analyzes the characteristics and limitations of IntServ and DiffServ which supports the mechanisms of QoS. Secondly, describes...
Most single-packet IP trace back approaches that have been proposed demand routers to log the packet digests to trace back, which lead to the linear growth of the storage overhead as the forwarded packets are increasing. This paper proposes a novel single-packet IP trace back approach based on the routing path to alleviate the burden of routers. Our approach introduces the relevant theories of label...
Telefonica International Wholesale Services, as many Internet Tier-1 Backbone operators, is dealing with traffic growth and its business sustainability. 2012 should be the year when 100GbE, coherent 100G transmission and Packet/OTN switching should become the cost effective solution.
On the analysis of QoS control mechanism of IMS architecture in 3GPP, this paper proposed a DiffServ-based QoS control mechanism of the IMS network, using MPLS bearing technologies, from the core network and the bearer network to achieve the end to end QoS control of IMS network.
In this paper we show data plane restoration measurements for restoration under backbone link failures for a large network with IP/MPLS OSPF routing and also for the same backbone with Traffic Engineering (TE) and Fast Reroute (FRR) deployed. Our study is unique as we analyzed a significant quantity of measurements obtained from a production network over a 14-month period encompassing many link failures...
This paper proposes two novel protection schemes to provide efficient and reliable MPLS Transport Profile (MPLS TP) multi-service, which is particularly relevant for the traditional service (e.g. TDM, FR) and fast growing packet service (VoIP, IPTV and so on). Both the proposed schemes based on the interconnected rings structure extend the protection methods defined in the latest joint ITU-IETF draft...
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...
Multi Protocol Label Switching (MPLS) is choice of future technology as it has capability to perform traffic engineering. IEEE 802.11e Medium Access Control (MAC) is an emerging supplement to the IEEE 802.11 Wireless Local Area Network (WLAN) standard to support Quality-of-Service (QoS). The 802.11e MAC is based on both centrally-controlled and contention-based channel accesses. This paper discusses...
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