Wide area network Traffic Engineering
|
|
- Byron Paul
- 8 years ago
- Views:
Transcription
1 ericsson White paper Uen December 2014 Wide area network Traffic Engineering meeting the challenges of the distributed cloud The evolution toward Network Functions Virtualization and the distributed cloud brings new challenges for wide area networks (WANs). By deploying software-defined networking-based Traffic Engineering with a centralized control plane, operators can improve elasticity while maximizing resource utilization in the WAN that connects the distributed cloud.
2 Network Functions Virtualization Network Functions Virtualization (NFV) as developed by the European Telecommunications Standards Institute (ETSI) NFV Industry Specification Group (ISG) aims for a clear separation between functional logic defined in software and the underlying infrastructure. This implies an opportunity to redesign the way network functions will be implemented in the future. Instead of being implemented in vertically integrated boxes (often called physical appliances, ) network functions will be provided as virtual appliances, in other words software executed in a virtualized infrastructure environment. Figure 1 shows how NFV decouples applications which could be network functions, service enablers or application servers from the infrastructure. In this paper, we use the term network functions in a broad sense. It can relate to functions within the control or forwarding plane of mobile-core networks (such as Evolved Packet Core and IMS), fixed-access networks (such as Broadband Network Gateway [BNG]) but also to functions in the forwarding plane of IP networks, for example, switches, routers and firewalls. In addition, the virtualization of customer premises equipment such as home and enterprise gateways is covered by this concept. Furthermore, it also covers application servers such as video servers that are involved in the delivery of network services. Application Application Application Application Application Application OS Processor OS Processor Middleware Middleware Middleware OS Processor Transformation Middleware Middleware Middleware Linux Industry-standard virtualization Industry-standard processors Switch Switch Switch Industry-standard switches Figure 1: NFV removes vertical coupling between applications and infrastructure. The NFV concept was first presented to a wider audience in a white paper written by 13 Tier 1 operators that was published in October 2012 [1]. It resulted in the creation of an ISG within ETSI, which started work in January Within less than two years, the number of active supporters of the ETSI NFV ISG grew to 235 companies, including 34 service provider organizations [2] [3]. It is important to note that an ISG in ETSI does not have a standardization mandate. It is rather a prestandardization activity that focuses primarily on use cases, high-level architecture design and proof-of-concepts, and it typically has a lifespan of two years. In a later specification phase, it is expected that existing de facto IT cloud standards will be reused to a large extent. This would also address the need for operators to harmonize their NFV infrastructure as much as possible with existing IT cloud infrastructure already running in their data centers. WIDE AREA NETWORK TRAFFIC ENGINEERING NETWORK FUNCTIONS VIRTUALIZATION 2
3 Virtual data centers Today s IT data centers are typically geographically centralized at larger sites of several thousand square meters. However, there are several reasons for using more than one data center per geographical region. One reason is redundancy if there is an outage in one location, the data center in another location can take over, thus guaranteeing service continuity. Another reason is user experience and the cost of traffic. Companies like Google, Facebook, and Netflix all started with a few data centers in the US. However, with heavier traffic and rising numbers of users worldwide, they were forced to add data centers in other regions in order to maintain good user experience and to optimize traffic costs. Similar considerations apply to NFV. Several Tier 1 operators have expressed demand for distributed cloud environments in which some parts of the cloud infrastructure are provided by centralized, national data centers and other parts of the cloud environment are located closer to the access network. For operators, it would be a natural choice to place remote cloud-execution environments, for example, in existing central office sites where fixed access gateways such as broadband remote access server BNG or mobile packet gateways such as Gateway GPRS Support Node Evolved Packet Gateway are already installed. Telefónica is an example of an operator that has fully embraced the concept of virtualized data centers across distributed cloud environments. Figure 2 shows UNICA, which is Telefónica s future data center architecture. An important requirement in UNICA is the ability to support several virtual data centers (VDCs). Each VDC can be managed by a different organizational entity, and a VDC can span several physical cloud environments. The various physical cloud environments can be located in centralized data centers or in smaller central office sites closer to the access network. All VDCs run on top of a common network infrastructure; however each VDC only sees the slice of the network assigned to it. API User portals UNICA infra domain portals UNICA infra domain management API API API VDC1 VDC2 VDC3 DC1 DC2 DC3 UNICA infra domain Figure 2: VDC concept. Source: Telefónica S.A. WIDE AREA NETWORK TRAFFIC ENGINEERING VIRTUAL DATA CENTERS 3
4 New challenges for the WAN Network The evolution toward NFV requires a distributed cloud that allows the creation, deletion, and free movement of virtual machines across different geographical locations. As a consequence, a WAN that interconnects the distributed cloud must be able to deal with more dynamically changing traffic patterns. To better understand the challenges that virtualized network functions and virtualized data centers put onto the WAN, a brief introduction to Traffic Engineering (TE) is needed. In simple terms, TE refers to the process of planning and steering data flows through the network. Operators have several reasons to deploy TE in their networks. The main reason is to minimize capex by increasing utilization of network resources. A common approach to TE is to create a traffic matrix that describes the bandwidth requirements between sources and destinations in a network. This traffic matrix is then used as input for the actual path computation, taking into consideration QoS and cost parameters, with the goal to maximize utilization while fulfilling all traffic requirements. The introduction of the VDC concept puts new requirements on the underlying WAN since the traffic within each VDC needs to be completely isolated from traffic of other VDCs. Concepts and technologies for achieving this partitioning are commonly referred to as network slicing. In addition, NFV will make the traffic within each VDC more dynamic. One reason for this is the location independence of network functions as exemplified in the following scenarios: > > When creating new service instances, resources can be chosen wherever they are available in the network. Resource pools can span various data centers in different geographical locations. > > Relocation of existing service instances becomes a pure software function virtual machine () migration. Since no hardware has to be moved, relocation of service instances is likely to happen more frequently than with vertically integrated nodes. Reasons for relocating existing virtual network functions include the following: > > resource availability (compute, storage, network bandwidth) > > user mobility (change in service demands per location) > > reduced latency, reduced transmission cost by bringing service nodes closer to the consumer and avoidance of traffic tromboning > > failure cases, resiliency, disaster recovery > > planned maintenance > > policy and security > > energy and cooling capacity. Whenever a virtual network function is instantiated or moved to a new location, traffic flows will change as well. This applies to, for example, traffic flows between a compute node and the related storage, or between a compute function and the access network connecting the user. The requirement on the WAN transport is to react to changes in traffic demand at the same pace at which virtual network functions are created or moved. Changes in traffic flows must be analyzed in real time or near-real time for their impact on allocated bandwidth in the transport. As long as changes are small and can be supported by already allocated resources, no change in the WAN transport may be required. The WAN transport must, however, be able to monitor the cumulative effect of all service modifications initiated by the management and orchestration systems and take appropriate measures when needed. WIDE AREA NETWORK TRAFFIC ENGINEERING NEW CHALLENGES FOR THE WAN NETWORK 4
5 Below is an example scenario that illustrates the impact of NFV on the traffic matrix in the WAN. For any given traffic pattern caused by the existing distribution of compute and storage functions between the three data centers in Figure 3, we assume the network has been configured to accommodate the resulting traffic matrix. TE could have been applied to optimize QoS parameters and cost by achieving optimal network utilization. In a next step, we assume that some virtual network functions are relocated. As shown in Figure 3, the compute resources in data center 1 are overutilized, while there are free resources in data center 2. In order to utilize compute resources more efficiently, some virtual network functions (running as virtual machines in data center 3) could be relocated to data center 2. Alternatively, when relocation is not possible or not desired, any new s could be created in data center 2 instead of the already overloaded data center 3. In either case, the creation of new s in data center 2 will impact the traffic matrix in the WAN, for example to connect to storage or bare metal servers in data center 3, or just because traffic from the access now has to be routed to data center 2 instead of data center 3. Figure 4 shows the situation after the change, with additional s located in data center 2. While Compute utilization suboptimal Compute Storage Data center 2 CSR Data center 3 Traffic flows PE CE Enterprise Compute Traffic matrix Network utilization may be optimal Storage Data center 1 Bare metal server Figure 3: Data center scenario before change. computing resources are now used more evenly, the traffic matrix has changed in the WAN and requires re-optimization of traffic flows to optimize cost and performance. As shown in the example above, the introduction of VDCs and NFV creates new requirements for TE in the WAN. In the following section, we will outline a solution architecture that can react to changes more quickly by controlling the WAN TE from an overarching orchestration layer. Using compute resources here, compute utilization may be optimal Compute Storage Data center 2 CSR Data center 3 PE Traffic flows Shortest path may now be congested CE Enterprise Compute Traffic matrix Network needs optimization Storage Data center 1 Bare metal server Figure 4: Data center scenario after change. WIDE AREA NETWORK TRAFFIC ENGINEERING NEW CHALLENGES FOR THE WAN NETWORK 5
6 Solution architecture for dynamic TE In the following, we describe a solution architecture for dynamic TE based on two main concepts: > > abstracting data centers as virtual Provider Edge (vpe) > > TE with centralized path computation. This solution architecture is based on software-defined networking (SDN) principles in the following way. Control plane centralization is applied both within the data center as well as in the WAN. Logical centralization of control plane functions creates a consolidated network view and a single control point for cross-network domain orchestration systems through standardized northbound application programming interfaces (APIs). ABSTRACTING DATA CENTERS AS VPE IP/multi-protocol label switching (MPLS) is the dominant technology used in service-provider networks today. The data center itself often uses different technologies such as Virtual Extensible LAN and Ethernet, including Provider Bridging and Shortest Path Bridging. Different data plane technologies increase the complexity of end-to-end TE when applying traditional concepts. A PE router is a standard component in IP/MPLS provider networks. A new way of integrating a data center into an IP/MPLS network is by representing the data center as a vpe router. The term virtual indicates that the data center appears like a PE to the outside network. This can be achieved by a central logical control node in the data center, fulfilling two purposes. Firstly, it controls the switches in the data center. Secondly, it speaks standard PE routing protocols to the IP/MPLS WAN. Very large data centers can be modeled as several vpe routers. The vpe approach is illustrated in Figure 5. Inside the data center, the Cloud Network Controller (CNC) is introduced as the central control plane instance. Being an SDN controller, it offers a northbound API allowing data center orchestration to control traffic flows centrally inside the data center. The CNC also Cross-domain orchestration Data center orchestration Data center orchestration vpe control plane CNC Control PCE Control vpe control plane CNC Topology information Control Control vswitch Data center transport WAN IP/MPLS Gateway Gateway Data center transport vswitch vpe forwarding plane Data center Figure 5: Data center architecture with vpe concept. vpe forwarding plane Data center WIDE AREA NETWORK TRAFFIC ENGINEERING SOLUTION ARCHITECTURE FOR DYNAMIC TE 6
7 controls data plane nodes within the data center through its southbound interface. OpenFlow is a protocol standardized by the Open Network Foundation and is most suitable as a southbound interface between control and forwarding planes. The controller can use other southbound protocols like NetConf or the Extensible Messaging and Presence Protocol depending on the type of forwarding device to be controlled. Towards the WAN, the CNC behaves like the control plane of a conventional router. This allows for easy integration with existing WAN networks, using standard routing protocols. A second SDN controller is introduced to offer a central control point from the cross-domain orchestration system toward the WAN interconnecting cloud locations. This WAN controller acts as a Path Computation Element (PCE) that computes and controls traffic paths in the WAN by interacting with physical or vpe routers. TE WITH CENTRALIZED PATH COMPUTATION MPLS is the dominant data plane technology in the WAN today. With MPLS, packets are sent from one network node to the next based on simple labels rather than complex network addresses. Several methods have been defined to enable TE in MPLS networks. The underlying principle of all mechanisms is to pre-configure label switched paths (LSPs) through the network based on path computation. Existing TE approaches can be divided into distributed and centralized approaches according to the way paths are set up in the transport network. In distributed approaches, topology attributes are disseminated via extensions of existing routing protocols such as Open Shortest Path First-TE or Intermediate System to Intermediate System-TE. The head-end node of each individual LSP is in charge of computing the path for its LSPs based on topology and constraints learned through the routing protocol. The head-end node then signals the LSPs through the network using RSVP (Reservation Protocol)-TE. The drawback of this approach is the required signaling through the network. LSP signaling not only happens when new LSPs are set up but also at regular time intervals to refresh LSP state on all routers along each LSP. In large networks, this signaling, together with the need to store LSP state on all routers, can represent a problem for scalability. In centralized approaches, the LSP calculation is often performed offline in a management system. The LSP configuration is then pushed into the nodes through Operation and Maintenance procedures. The advantage of a centralized approach is that it can consider application requirements more easily than a distributed path computation in the network nodes. Central path calculation also has the ability to compute more optimal paths, based on global knowledge, which results in better network resource utilization. The drawback of the traditional approach of centralized offline calculation is a lack of agility and the need for complex and expensive management software. It also involves a high degree of manual work to prepare the necessary input for path calculation. This results in high cost and slow response times. With the advent of SDN principles, new solutions that can overcome the limitations of existing TE solutions become feasible. An SDN-based approach has the following characteristics: > > Path calculation is done in a centralized controller. > > The controller provides open northbound interfaces for integration with an orchestration layer. > > The controller supports various southbound interfaces toward the network elements for configuring the calculated path in the data plane. Centralized path computation is performed by a dedicated PCE. The PCE is a functional building block that can either be deployed as a standalone node or as a component of a Multi-layer WAN Controller (MLWC). In both cases, the central controller provides a central touch point that allows higher layer orchestration systems to interact with the network. This makes it possible for orchestration systems to perform optimizations across different types of resources, covering compute, storage and also networking, which results in optimal utilization across all resource categories. Deploying the PCE as part of an MLWC offers the additional capability of performing path optimization across the IP/MPLS and optical layers [4]. The MLWC can be implemented on an open SDN controller platform such as OpenDaylight [5]. Another example of an open SDN controller platform for WAN applications is ONOS [6]. An appealing solution results from combining an SDN-based control layer with Segment Routing (SR) in the data plane. SR is currently under standardization by the Internet Engineering Task Force, and is supported by several large network equipment vendors and operators. In contrast to conventional TE solutions, SR removes the need to signal and periodically refresh LSPs along the entire path in the network. Information about the path of an LSP is not stored in each router along the path, but in the header of payload packets. This reduces the amount of WIDE AREA NETWORK TRAFFIC ENGINEERING SOLUTION ARCHITECTURE FOR DYNAMIC TE 7
8 label information and the complexity of maintaining it in all routers along an LSP. Together with the removal of label signaling, this allows the network to scale better by offloading the control and forwarding planes in routers. Besides scalable TE, SR also offers advantages such as 100 percent fast reroute coverage in arbitrary topologies, support for network wide service chaining and IPv6 as a data plane alternative to MPLS. It should also be noted that centralized path computation also works with conventional label signaling or even in heterogeneous environments where parts of the network use SR and other parts use a label distribution protocol. This allows for smooth migration of existing networks. SDN-based SR can be gradually introduced via software updates. Only the edge nodes require an interface toward an SDN controller. Intermediate network nodes do not need an interface toward the SDN controller they need to support the SR label distribution and forwarding mechanisms, which in most cases only requires a software update. WIDE AREA NETWORK TRAFFIC ENGINEERING SOLUTION ARCHITECTURE FOR DYNAMIC TE 8
9 Use case example Here is a practical use case where cross-domain orchestration works together with a central PCE to provide optimal forwarding for different types of applications. In the network setup shown in Figure 6, assume there is a high service demand in an area near data center DC2. There will be a mix of various applications creating delay-sensitive traffic, such as voice and VoLTE, and high-bandwidth traffic, such as video. Without intervention, the higher than usual traffic demand could create congestion on the shortest path link between PE2 and PE4. This can cause packet loss and delay with service degradation for all applications, while at the same time spare bandwidth is available on non-shortest path links. In reaction to the increased traffic demand, the cross-domain orchestration system can interact Cross-domain orchestration DC1 Internet vpe1 PCE PE4 10G, 10ms 10G, 10ms Access vpe2 DC2 10G, 20ms PE3 Figure 6: Suboptimal resource utilization. both with the data center as well as with the WAN. The orchestration could, for example, instantiate virtual network functions like caching servers or content filters close to consumer in data center DC2. In addition, the orchestration system can also interact with the WAN to achieve more optimal load distribution. This must also take into consideration the QoS requirements of the different applications. In the example shown here, the direct link between PE2 and PE4 has low delay but is highly utilized. There is an additional path via PE3 that has spare bandwidth but higher delay. Without TE, all traffic will use the shortest path and no load balancing will occur. When network analytics functions detect suboptimal resource utilization, the orchestration system instructs the PCE to establish two alternative MPLS LSPs for load balancing (step 1). The PCE computes optimal routes for each LSP based on topology and bandwidth information (step 2). Path computation can also take other constraints into account like delay, path diversity, protection type and time of day. The PCE then signals the path to the edge routers PE2 and PE4 using the PCE Protocol (step 3). The PE routers assign traffic flows to LSPs on a per-vpn or per-class-of-service basis (step 4). For example, delay-sensitive VoLTE traffic is assigned to the low delay path, while high-volume video traffic, which is less delay-sensitive, is assigned to the path with higher bandwidth and higher delay. As a result, network resources are used efficiently and QoS requirements are fulfilled for each type of application. WIDE AREA NETWORK TRAFFIC ENGINEERING USE CASE EXAMPLES 9
10 Cross-domain orchestration 1 2 PCE Signaling of labeled paths 3 vpe1 DC1 4 Internet 3 Signaling of labeled paths Access 4 vpe2 DC2 10G, 10ms 10G, 20ms Delay-sensitive traffic PE3 10G, 10ms PE4 High-volume traffic Figure 7: Network optimized with TE. In an SR scenario, the explicit paths computed by the PCE are encoded in the MPLS labels stack and communicated to PE2 and PE4. In contrast to a solution with RSVP-TE, an SR solution does not require any signaling along the LSP path. No LSP state has to be stored on internal backbone routers. The need to refresh LSP state through periodic RSVP-TE messages is also removed, resulting in increased scalability of the solution. SR even removes the need for a dedicated label distribution protocol by carrying label information in extensions of conventional routing protocols. WIDE AREA NETWORK TRAFFIC ENGINEERING USE CASE EXAMPLES 10
11 CoNclusion Virtualizing network functions in distributed cloud environments leads to more dynamically changing traffic patterns in the WAN. This creates challenges for traditional TE approaches that are unable to react quickly enough to changing traffic patterns, and leads to inefficient use of transport resources and QoS degradations. This paper outlines a network architecture that supports the implementation of an automated, near real-time TE solution and fulfills the needs of distributed cloud environments. The approach is characterized by two main concepts: > > abstraction of the data center as vpe > > TE with a central PCE. Both concepts can be implemented with an SDN-based approach in an open and standardized way. With this approach, the network becomes accessible for the orchestration system and allows cross-domain optimization of compute, storage and network resources. This allows operators to maximize utilization for all types of resources as a whole, with reduced effort and response times. The proposed SDN-based TE approach works with conventional label signaling for path setup. However, an appealing solution results from using SR in the data plane as a means to manage transport paths in the WAN. SR can be gradually introduced via software updates. This white paper has been developed in collaboration with Telefónica I+D. WIDE AREA NETWORK TRAFFIC ENGINEERING CONCLUSION 11
12 GLOSSARY API BNG CE CSR CNC ETSI ISG LSP MLWC MPLS NFV OS PCE PE RSVP SDN SR TE VDC vpe WAN application programming interface Broadband Network Gateway Customer Edge cell site router Cloud Network Controller European Telecommunications Standards Institute Industry Specification Group label switched path Multi-layer WAN Controller multi-protocol label switching Network Functions Virtualization operating system Path Computation Element Provider Edge Reservation Protocol software-defined networking Segment Routing Traffic Engineering virtual data center virtual machine virtual Provider Edge wide area network WIDE AREA NETWORK TRAFFIC ENGINEERING GLOSSARY 12
13 References [1] ETSI NFV ISG, October 2012, Network Functions Virtualisation: An Introduction, Benefits, Enablers, Challenges & Call for Action, available at: pdf [2] ETSI NFV ISG, October 2013, Network Functions Virtualisation (NFV): Network Operator Perspectives on Industry Progress, available at: [3] ETSI NFV ISG, October 2014, Network Functions Virtualisation (NFV): Network Operator Perspectives on Industry Progress, available at: [4] E2E Traffic Engineering Routing for Transport SDN, Ericsson, Corital & Telefónica, OFC 2014 conference, Paola Iovanna, Fabio Ubaldi, Francesco Di Michele, Juan Pedro Fernandez-Palacios Gimenez & Victor Lopez [5] OpenDaylight, accessed December 2014, available at: [6] ON.Lab ONOS, accessed December 2014, available at: Further Reading Cloud computing in telecommunications, Ericsson Review, June 2010, Jan Gabrielsson, Ola Hubertsson, Ignacio Más & Robert Skog, available at: cloudcomputing.pdf Software-defined networking: the service provider perspective, Ericsson Review, February 2013, Attila Takacs, Elisa Bellagamba & Joe Wilke, available at: Virtualizing network services the telecom cloud, Ericsson Review, March 2014, Henrik Basilier, Marian Darula & Joe Wilke, available at: WIDE AREA NETWORK TRAFFIC ENGINEERING REFERENCES & FURTHER READING 13
Virtualization, SDN and NFV
Virtualization, SDN and NFV HOW DO THEY FIT TOGETHER? Traditional networks lack the flexibility to keep pace with dynamic computing and storage needs of today s data centers. In order to implement changes,
More informationSDN and NFV in the WAN
WHITE PAPER Hybrid Networking SDN and NFV in the WAN HOW THESE POWERFUL TECHNOLOGIES ARE DRIVING ENTERPRISE INNOVATION rev. 110615 Table of Contents Introduction 3 Software Defined Networking 3 Network
More informationFlexible SDN Transport Networks With Optical Circuit Switching
Flexible SDN Transport Networks With Optical Circuit Switching Multi-Layer, Multi-Vendor, Multi-Domain SDN Transport Optimization SDN AT LIGHT SPEED TM 2015 CALIENT Technologies 1 INTRODUCTION The economic
More informationPanel: Cloud/SDN/NFV 黃 仁 竑 教 授 國 立 中 正 大 學 資 工 系 2015/12/26
Panel: Cloud/SDN/NFV 黃 仁 竑 教 授 國 立 中 正 大 學 資 工 系 2015/12/26 1 Outline Cloud data center (CDC) Software Defined Network (SDN) Network Function Virtualization (NFV) Conclusion 2 Cloud Computing Cloud computing
More informationA Coordinated. Enterprise Networks Software Defined. and Application Fluent Programmable Networks
A Coordinated Virtual Infrastructure for SDN in Enterprise Networks Software Defined Networking (SDN), OpenFlow and Application Fluent Programmable Networks Strategic White Paper Increasing agility and
More informationLeveraging SDN and NFV in the WAN
Leveraging SDN and NFV in the WAN Introduction Software Defined Networking (SDN) and Network Functions Virtualization (NFV) are two of the key components of the overall movement towards software defined
More informationDelivering Managed Services Using Next Generation Branch Architectures
Delivering Managed Services Using Next Generation Branch Architectures By: Lee Doyle, Principal Analyst at Doyle Research Sponsored by Versa Networks Executive Summary Network architectures for the WAN
More informationConference. Smart Future Networks THE NEXT EVOLUTION OF THE INTERNET FROM INTERNET OF THINGS TO INTERNET OF EVERYTHING
Conference THE NEXT EVOLUTION OF THE INTERNET FROM INTERNET OF THINGS TO INTERNET OF Smart Future Networks www.internet-of-things.no EVERYTHING Patrick Waldemar Vice President Telenor Research and Future
More informationICTTEN6172A Design and configure an IP- MPLS network with virtual private network tunnelling
ICTTEN6172A Design and configure an IP- MPLS network with virtual private network tunnelling Release: 1 ICTTEN6172A Design and configure an IP-MPLS network with virtual private network tunnelling Modification
More informationWhat is SDN all about?
What is SDN all about? Emil Gągała Juniper Networks Piotr Jabłoński Cisco Systems In the beginning there was a chaos CLOUD BUILDING BLOCKS CAN I VIRTUALIZE MY Compute Network? Storage Where is my money?
More informationWhy Service Providers Need an NFV Platform Strategic White Paper
Why Service Providers Need an NFV Platform Strategic White Paper Network Functions Virtualization (NFV) brings proven cloud computing and IT technologies into the networking domain to help service providers
More informationAgile VPN for Carrier/SP Network. ONOS- based SDN Controller for China Unicom MPLS L3VPN Service
Agile VPN for Carrier/SP Network ONOS- based SDN Controller for China Unicom MPLS L3VPN Service Introduction In order to meet strong service demand on their network and respond to the new competition (who
More informationBusiness Case for Cisco SDN for the WAN
Business Case for Cisco SDN for the WAN s Executive Summary Traffic requirements are growing rapidly because of the widespread acceptance of online video services, cloud computing, and mobile broadband.
More informationThe real-time cloud. ericsson White paper Uen 284 23-3219 Rev B February 2014
ericsson White paper Uen 284 23-3219 Rev B February 2014 The real-time cloud COMBINING CLOUD, NFV AND SERVICE PROVIDER SDN Operators need to ensure that their networks remain a relevant and vital part
More informationBusiness Case for NFV/SDN Programmable Networks
Business Case for NFV/SDN Programmable Networks Executive Summary Traditional network designs are failing to meet service providers business requirements. The designs lead to complex hardware stacks, over-provisioning
More informationTesting Software Defined Network (SDN) For Data Center and Cloud VERYX TECHNOLOGIES
Testing Software Defined Network (SDN) For Data Center and Cloud VERYX TECHNOLOGIES Table of Contents Introduction... 1 SDN - An Overview... 2 SDN: Solution Layers and its Key Requirements to be validated...
More informationSoftware-Defined Networks Powered by VellOS
WHITE PAPER Software-Defined Networks Powered by VellOS Agile, Flexible Networking for Distributed Applications Vello s SDN enables a low-latency, programmable solution resulting in a faster and more flexible
More informationSDN CONTROLLER. Emil Gągała. PLNOG, 30.09.2013, Kraków
SDN CONTROLLER IN VIRTUAL DATA CENTER Emil Gągała PLNOG, 30.09.2013, Kraków INSTEAD OF AGENDA 2 Copyright 2013 Juniper Networks, Inc. www.juniper.net ACKLOWLEDGEMENTS Many thanks to Bruno Rijsman for his
More informationA Presentation at DGI 2014 Government Cloud Computing and Data Center Conference & Expo, Washington, DC. September 18, 2014.
A Presentation at DGI 2014 Government Cloud Computing and Data Center Conference & Expo, Washington, DC September 18, 2014 Charles Sun www.linkedin.com/in/charlessun @CharlesSun_ 1 What is SDN? Benefits
More informationBest Effort gets Better with MPLS. Superior network flexibility and resiliency at a lower cost with support for voice, video and future applications
Best Effort gets Better with MPLS Superior network flexibility and resiliency at a lower cost with support for voice, video and future applications A White Paper on Multiprotocol Label Switching October,
More informationBandwidth Management in MPLS Networks
School of Electronic Engineering - DCU Broadband Switching and Systems Laboratory 1/17 Bandwidth Management in MPLS Networks Sanda Dragos & Radu Dragos Supervised by Dr. Martin Collier email: dragoss@eeng.dcu.ie
More informationINTERNATIONAL JOURNAL OF PURE AND APPLIED RESEARCH IN ENGINEERING AND TECHNOLOGY
INTERNATIONAL JOURNAL OF PURE AND APPLIED RESEARCH IN ENGINEERING AND TECHNOLOGY A PATH FOR HORIZING YOUR INNOVATIVE WORK SOFTWARE DEFINED NETWORKING A NEW ARCHETYPE PARNAL P. PAWADE 1, ANIKET A. KATHALKAR
More informationTransform Your Business and Protect Your Cisco Nexus Investment While Adopting Cisco Application Centric Infrastructure
White Paper Transform Your Business and Protect Your Cisco Nexus Investment While Adopting Cisco Application Centric Infrastructure What You Will Learn The new Cisco Application Centric Infrastructure
More informationExpert Reference Series of White Papers. Is Network Functions Virtualization (NFV) Moving Closer to Reality?
Expert Reference Series of White Papers Is Network Functions Virtualization (NFV) Moving Closer to Reality? 1-800-COURSES www.globalknowledge.com Is Network Functions Virtualization (NFV) Moving Closer
More informationVarious Alternatives to achieve SDN. Dhruv Dhody, Sr. System Architect, Huawei Technologies
Various Alternatives to achieve SDN Dhruv Dhody, Sr. System Architect, Huawei Technologies Huawei India R&D Dhruv Dhody Who? A multinational networking and telecommunications equipment and services company
More informationUsing SDN-OpenFlow for High-level Services
Using SDN-OpenFlow for High-level Services Nabil Damouny Sr. Director, Strategic Marketing Netronome Vice Chair, Marketing Education, ONF ndamouny@netronome.com Open Server Summit, Networking Applications
More informationChallenges and Opportunities:
Challenges and Opportunities: The Rise of Software Centric Networking Nicolai Leymann Deutsche Telekom Technik 12.03.2015 Table of Contents 1. Todays networks and challenges 2. The New World: Software
More informationThe Cloud-Optimized. Leveraging a multi-layer SDN framework
The Cloud-Optimized MAN and WAN Leveraging a multi-layer SDN framework to deliver scalable and agile cloud services Strategic white paper Over the next few years, service providers will adopt Software-Defined
More informationAn Architecture for Application-Based Network Operations
An Architecture for Application-Based Network Operations Daniel King Old Dog Consulting daniel@olddog.co.uk Adrian Farrel - Old Dog Consulting adrian@olddog.co.uk www.isocore.com/mpls2013 Control of Today
More informationQualifying SDN/OpenFlow Enabled Networks
Qualifying SDN/OpenFlow Enabled Networks Dean Lee Senior Director, Product Management Ixia Santa Clara, CA USA April-May 2014 1 Agenda SDN/NFV a new paradigm shift and challenges Benchmarking SDN enabled
More informationOpenFlow -Enabled Cloud Backbone Networks Create Global Provider Data Centers. ONF Solution Brief November 14, 2012
OpenFlow -Enabled Cloud Backbone Networks Create Global Provider Data Centers ONF Solution Brief November 14, 2012 Table of Contents 2 OpenFlow-Enabled Software-Defined Networking 2 Executive Summary 3
More informationThe Role of Virtual Routers In Carrier Networks
The Role of Virtual Routers In Carrier Networks Sterling d Perrin Senior Analyst, Heavy Reading Agenda Definitions of SDN and NFV Benefits of SDN and NFV Challenges and Inhibitors Some Use Cases Some Industry
More informationTHE SDN TRANSFORMATION A Framework for Sustainable Success
WHITE PAPER THE SDN TRANSFORMATION A Framework for Sustainable Success The promise of Software Defined Networking (SDN) is gaining more and more attention as traffic growth increases the costs and complexity
More informationSDN: A NEW PARADIGM. Kireeti Kompella CTO, JDI
SDN: A NEW PARADIGM Kireeti Kompella CTO, JDI AGENDA What is SDN? Definition and goals of SDN Analogy with Compute Virtualization Orchestration for Agile Provisioning Unified SDN What parts of the network
More informationSoftware-defined networking: the service provider perspective
The communications technology journal since 1924 Software-defined networking: the service provider perspective February 21, 2013 2013 2 New network abstraction layers 2 Software-defined networking: the
More informationNovember 2013. Defining the Value of MPLS VPNs
November 2013 S P E C I A L R E P O R T Defining the Value of MPLS VPNs Table of Contents Introduction... 3 What Are VPNs?... 4 What Are MPLS VPNs?... 5 What Are the Benefits of MPLS VPNs?... 8 How Do
More informationONOS [Open Source SDN Network Operating System for Service Provider networks]
ONOS [Open Source SDN Network Operating System for Service Provider networks] http://onosproject.org/ Released on December 5 th, 2014 Guru Parulkar parulkar@stanford.edu ONOS Partnership A partnership
More informationCloud, SDN and the Evolution of
Cloud, SDN and the Evolution of Enterprise Networks Neil Rickard Gartner is a registered trademark of Gartner, Inc. or its affiliates. This publication may not be reproduced or distributed in any form
More informationBuilding Content Distribution Platforms over Flexible Optical Networks
Building Content Distribution Platforms over Flexible Optical Networks Paul Wright (BT) paul.3.wright@bt.com Daniel King (Lancaster University) d.king@lancaster.ac.uk Broadcaster Industry Trends Delivery
More informationU s i n g S D N - and NFV-based Servi c e s to M a x i m iz e C SP Reve n u e s a n d I n c r e ase
I D C T E C H N O L O G Y S P O T L I G H T U s i n g S D N - and NFV-based Servi c e s to M a x i m iz e C SP Reve n u e s a n d I n c r e ase Operational Efficiency March 2013 Adapted from Will New SDN
More informationSOFTWARE DEFINED NETWORKS REALITY CHECK. DENOG5, Darmstadt, 14/11/2013 Carsten Michel
SOFTWARE DEFINED NETWORKS REALITY CHECK DENOG5, Darmstadt, 14/11/2013 Carsten Michel Software Defined Networks (SDN)! Why Software Defined Networking? There s a hype in the industry!! Dispelling some myths
More informationDesigning Virtual Network Security Architectures Dave Shackleford
SESSION ID: CSV R03 Designing Virtual Network Security Architectures Dave Shackleford Sr. Faculty and Analyst SANS @daveshackleford Introduction Much has been said about virtual networking and softwaredefined
More informationIntroduction to Software Defined Networking
Introduction to Software Defined Networking Introduction to SDN Ahmed Maged MENOG 15 Dubai April 2015 @amaged amaged@xegypt.org Agenda What is SDN and What it is not SDN Trends Getting Ready for SDN 2
More informationMPLS: Key Factors to Consider When Selecting Your MPLS Provider Whitepaper
MPLS: Key Factors to Consider When Selecting Your MPLS Provider Whitepaper 2006-20011 EarthLink Business Page 1 EXECUTIVE SUMMARY Multiprotocol Label Switching (MPLS), once the sole domain of major corporations
More informationAnalysis of traffic engineering parameters while using multi-protocol label switching (MPLS) and traditional IP networks
Analysis of traffic engineering parameters while using multi-protocol label switching (MPLS) and traditional IP networks Faiz Ahmed Electronic Engineering Institute of Communication Technologies, PTCL
More informationThe Promise and the Reality of a Software Defined Data Center
The Promise and the Reality of a Software Defined Data Center Authored by Sponsored by Introduction The traditional IT operational model is highly manual and very hardware centric. As a result, IT infrastructure
More informationRIDE THE SDN AND CLOUD WAVE WITH CONTRAIL
RIDE THE SDN AND CLOUD WAVE WITH CONTRAIL Pascal Geenens CONSULTING ENGINEER, JUNIPER NETWORKS pgeenens@juniper.net BUSINESS AGILITY Need to create and deliver new revenue opportunities faster Services
More informationGAINING FULL CONTROL OF YOUR NETWORK WITH SERVICE PROVIDER SDN STRATEGIC WHITE PAPER
GAINING FULL CONTROL OF YOUR NETWORK WITH SERVICE PROVIDER SDN STRATEGIC WHITE PAPER While the focus of software-defined networking (SDN) so far has been the automation of data center (DC) networks, service
More informationBuilding Access Networks that Support Carrier Ethernet 2.0 Services and SDN
In cooperation with Building Access Networks that Support Carrier Ethernet 2.0 Services and SDN COMMTECH Show Toronto, April 15-16 Mississauga Center by Pasquale Tagliarini Senior Solutions Engineer Agenda
More informationNetwork Functions Virtualization (NFV) for Next Generation Networks (NGN)
P a g e 1 Network Functions Virtualization (NFV) for Next Generation Networks (NGN) Summary Network Functions Virtualization (NFV) has drawn industry attention. Network Virtualization aims to transform
More informationEvolution of OpenCache: an OpenSource Virtual Content Distribution Network (vcdn) Platform
Evolution of OpenCache: an OpenSource Virtual Content Distribution Network (vcdn) Platform Daniel King d.king@lancaster.ac.uk Matthew Broadbent m.broadbent@lancaster.ac.uk David Hutchison d.hutchison@lancaster.ac.uk
More informationCarrier/WAN SDN. SDN Optimized MPLS Demo
Carrier/WAN SDN SDN Optimized MPLS Demo Problem Statement! Service Providers around the world have large investments in highly sophisticated and feature rich IP/MPLS network infrastructures for providing
More informationWHITEPAPER MPLS: Key Factors to Consider When Selecting Your MPLS Provider
WHITEPAPER MPLS: Key Factors to Consider When Selecting Your MPLS Provider INTRODUCTION Multiprotocol Label Switching (MPLS), once the sole domain of major corporations and telecom carriers, has gone mainstream
More informationNetwork Functions Virtualization in Home Networks
Network Functions Virtualization in Home Networks Marion Dillon Timothy Winters Abstract The current model of home networking includes relatively low- cost, failure- prone devices, requiring frequent intervention
More informationWhat is SDN? And Why Should I Care? Jim Metzler Vice President Ashton Metzler & Associates
What is SDN? And Why Should I Care? Jim Metzler Vice President Ashton Metzler & Associates 1 Goals of the Presentation 1. Define/describe SDN 2. Identify the drivers and inhibitors of SDN 3. Identify what
More informationAddressing Inter Provider Connections With MPLS-ICI
Addressing Inter Provider Connections With MPLS-ICI Introduction Why migrate to packet switched MPLS? The migration away from traditional multiple packet overlay networks towards a converged packet-switched
More informationSDN Architecture and Service Trend
2013 SDN 高 峰 論 壇 SDN Architecture and Service Trend Dr. Yu-Huang Chu Broadband Network Lab Chunghwa Telecom Co., Ltd., Taiwan 10/09/13 1 Outlines SDN & NFV introduction Network Architecture Trend SDN Services
More informationNetwork Softwarisation An Open Development Ecosystem. Telefónica I+D @ Global CTO 26-03-2015
Network Softwarisation An Open Development Ecosystem Telefónica I+D @ Global CTO 26-03-2015 We are evolving towards a Hyper Connected and Intelligent Digital World* The explosion of digital services makes
More informationHow To Provide Qos Based Routing In The Internet
CHAPTER 2 QoS ROUTING AND ITS ROLE IN QOS PARADIGM 22 QoS ROUTING AND ITS ROLE IN QOS PARADIGM 2.1 INTRODUCTION As the main emphasis of the present research work is on achieving QoS in routing, hence this
More informationSOFTWARE-DEFINED NETWORKING AND OPENFLOW
SOFTWARE-DEFINED NETWORKING AND OPENFLOW Freddie Örnebjär TREX Workshop 2012 2012 Brocade Communications Systems, Inc. 2012/09/14 Software-Defined Networking (SDN): Fundamental Control
More informationSDN Interfaces and Performance Analysis of SDN components
Institute of Computer Science Department of Distributed Systems Prof. Dr.-Ing. P. Tran-Gia SDN Interfaces and Performance Analysis of SDN components, David Hock, Michael Jarschel, Thomas Zinner, Phuoc
More informationNetwork Virtualization Solutions
Network Virtualization Solutions An Analysis of Solutions, Use Cases and Vendor and Product Profiles October 2013 The Independent Community and #1 Resource for SDN and NFV Tables of Contents Introduction
More informationSDN FOR IP/OPTICAL TRANSPORT NETWORKS
SDN FOR IP/OPTICAL TRANSPORT NETWORKS Tony Kourlas IP Routing and Transport Group, Alcatel-Lucent April 2014 THE EVOLUTION OF IP & OPTICAL NETWORKS Cloud-optimized IP routing & transport IP routing networks
More informationSoftware-Defined Networking Architecture Framework for Multi-Tenant Enterprise Cloud Environments
Software-Defined Networking Architecture Framework for Multi-Tenant Enterprise Cloud Environments Aryan TaheriMonfared Department of Electrical Engineering and Computer Science University of Stavanger
More informationMaster Course Computer Networks IN2097
Chair for Network Architectures and Services Prof. Carle Department for Computer Science TU München Master Course Computer Networks IN2097 Prof. Dr.-Ing. Georg Carle Christian Grothoff, Ph.D. Chair for
More informationEmbracing Transport SDN for Open Networking Architectures
Embracing Transport SDN for Open Networking Architectures Yabin YE yeyabin@huawei.com HUAWEI TECHNOLOGIES CO., LTD. Agenda Move Towards SDN Transport SDN Use Cases Examples of Transport SDN 2 ONF Definition
More informationSDN IN WAN NETWORK PROGRAMMABILITY THROUGH CENTRALIZED PATH COMPUTATION. 1 st September 2014
SDN IN WAN NETWORK PROGRAMMABILITY THROUGH CENTRALIZED PATH COMPUTATION st September 04 Aaron Tong Senior Manager High IQ Networking Centre of Excellence JUNIPER S AUTOMATION HORIZON SDN IS A JOURNEY NOT
More informationManagement & Orchestration of Metaswitch s Perimeta Virtual SBC
Metaswitch.com OvertureNetworks.com Management & Orchestration of Metaswitch s Perimeta Virtual SBC Fortify your edge and protect your core with the Perimeta Session Border Controller: Virtual The 1st
More informationThank you for joining us today! The presentation will begin shortly. Thank you for your patience.
Thank you for joining us today! The presentation will begin shortly. Thank you for your patience. Copyright 2012-201. SDNCentral LLC. All Rights Reserved 1 October 30, 201 DemoFriday Logistics Enable pop-ups
More informationJuniper Networks NorthStar Controller
Juniper Networks NorthStar Controller Functionality Test Report Introduction IP/MPLS has been the technology of choice for service providers for the better part of a decade and a half. Backbone network
More informationBusiness Cases for Brocade Software-Defined Networking Use Cases
Business Cases for Brocade Software-Defined Networking Use Cases Executive Summary Service providers (SP) revenue growth rates have failed to keep pace with their increased traffic growth and related expenses,
More informationSDN Testbed Experiences: Challenges and Next Steps
SDN Testbed Experiences: Challenges and Next Steps SDN Concertation Workshop January 30 th, 2014 Daniel King d.king@lancaster.ac.uk Panagiotis Georgopoulos p.georgopoulos@lancaster.ac.uk Nicholas Race
More informationDriving SDN Adoption in Service Provider Networks
WHITEPAPER Software Defined Networking (SDN) Driving SDN Adoption in Service Provider Networks This whitepaper provides an overview of key requirements and enablers for driving SDN adoption in Service
More informationMPLS: Key Factors to Consider When Selecting Your MPLS Provider
White paper MPLS: Key Factors to Consider When Selecting Your MPLS Provider New Edge Networks June 2008 New Edge Networks 3000 Columbia House Blvd. Vancouver, WA 98661 360-693-9009 1-866-636-EDGE www.newedgenetworks.com
More informationVIRTUALIZING THE EDGE
VIRTUALIZING THE EDGE NFV adoption to transform telecommunications infrastructure Karthik Kailasam Director, Integrated Modular Solutions September 2015 Key Messages The transformation of telecom networks
More informationValue Creation with Innovative Network Interface Devices (NIDs)
NETWORK FUNCTIONS VIRTUALIZATION NETWORK FUNCTIONS VIRTUALIZATION Value Creation with Innovative Network Interface Devices (s) 3 NETWORK FUNCTIONS VIRTUALIZATION 2 Growing Business While Adopting Network
More informationData Center Network Virtualisation Standards. Matthew Bocci, Director of Technology & Standards, IP Division IETF NVO3 Co-chair
Data Center Network Virtualisation Standards Matthew Bocci, Director of Technology & Standards, IP Division IETF NVO3 Co-chair May 2013 AGENDA 1. Why standardise? 2. Problem Statement and Architecture
More informationEthernet-based Software Defined Network (SDN) Cloud Computing Research Center for Mobile Applications (CCMA), ITRI 雲 端 運 算 行 動 應 用 研 究 中 心
Ethernet-based Software Defined Network (SDN) Cloud Computing Research Center for Mobile Applications (CCMA), ITRI 雲 端 運 算 行 動 應 用 研 究 中 心 1 SDN Introduction Decoupling of control plane from data plane
More informationSOFTWARE DEFINED NETWORKING
SOFTWARE DEFINED NETWORKING Bringing Networks to the Cloud Brendan Hayes DIRECTOR, SDN MARKETING AGENDA Market trends and Juniper s SDN strategy Network virtualization evolution Juniper s SDN technology
More informationMulti Protocol Label Switching (MPLS) is a core networking technology that
MPLS and MPLS VPNs: Basics for Beginners Christopher Brandon Johnson Abstract Multi Protocol Label Switching (MPLS) is a core networking technology that operates essentially in between Layers 2 and 3 of
More informationSDN-NFV: An introduction 30.10.2014
SDN-NFV: An introduction Telefónica I+D @ Global CTO 30.10.2014 We are evolving towards a Hyper Connected and Intelligent Digital World* The explosion of digital services makes connectivity services more
More informationIntroduction to Software Defined Networking (SDN) and how it will change the inside of your DataCentre
Introduction to Software Defined Networking (SDN) and how it will change the inside of your DataCentre Wilfried van Haeren CTO Edgeworx Solutions Inc. www.edgeworx.solutions Topics Intro Edgeworx Past-Present-Future
More informationVirtual CPE and Software Defined Networking
Virtual CPE and Software Defined Networking Virtual CPE and Software Defined Networking Residential broadband service providers are looking for solutions that allow them to rapidly introduce innovative
More informationLayer T and Layer C: Collapsing Communications Networks into Transport and Cloud Services
Layer T and Layer C: Collapsing Communications Networks into Transport and Cloud Services March 20, 2015 JJ Summary Rick Talbot Current Analysis Principal Analyst, Optical Infrastructure Rapid network
More informationBusiness Case for BTI Intelligent Cloud Connect for Content, Co-lo and Network Providers
Business Case for BTI Intelligent Cloud Connect for Content, Co-lo and Network Providers s Executive Summary Cloud computing, video streaming, and social media are contributing to a dramatic rise in metro
More informationCLOUD NETWORKING FOR ENTERPRISE CAMPUS APPLICATION NOTE
CLOUD NETWORKING FOR ENTERPRISE CAMPUS APPLICATION NOTE EXECUTIVE SUMMARY This application note proposes Virtual Extensible LAN (VXLAN) as a solution technology to deliver departmental segmentation, business
More informationNetwork Function Virtualization Primer. Understanding NFV, Its Benefits, and Its Applications
Network Function Virtualization Primer Understanding NFV, Its Benefits, and Its Applications Table of Contents Introduction..................................... 3 NFV The Basics...................................
More informationProspects for Software Defined Networking & Network Function Virtualization in Media and Broadcast John Ellerton
Prospects for Software Defined Networking & Network Function Virtualization in Media and Broadcast John Ellerton Head of Media Futures, British Telecom john.ellerton@bt.com Agenda The Promise of SDN and
More informationCENTER I S Y O U R D ATA
I S Y O U R D ATA CENTER R E A DY F O R S D N? C R I T I C A L D ATA C E N T E R C O N S I D E R AT I O N S FOR SOFT WARE-DEFINED NET WORKING Data center operators are being challenged to be more agile
More informationNetwork Function Virtualization & Software Defined Networking
Network Function Virtualization & Software Defined Networking Rencontres Inria Industrie «Télécoms du futur» 13 novembre 2014 Walid Dabbous Outline Network Functions Virtualization Software Defined Networks
More informationIncrease Simplicity and Improve Reliability with VPLS on the MX Series Routers
SOLUTION BRIEF Enterprise Data Center Interconnectivity Increase Simplicity and Improve Reliability with VPLS on the Routers Challenge As enterprises improve business continuity by enabling resource allocation
More informationSoftware Defined Environments
November 2015 Software Defined Environments 2015 Cloud Lecture, University of Stuttgart Jochen Breh, Director Architecture & Consulting Cognizant Global Technology Office Agenda Introduction New Requirements
More informationThe Mandate for a Highly Automated IT Function
The Mandate for a Highly Automated IT Function Introduction The traditional IT operational model is highly manual and very hardware centric. As a result, IT infrastructure services have historically been
More informationWHITE PAPER. Addressing Inter Provider Connections with MPLS-ICI CONTENTS: Introduction. IP/MPLS Forum White Paper. January 2008. Introduction...
Introduction WHITE PAPER Addressing Inter Provider Connections with MPLS-ICI The migration away from traditional multiple packet overlay networks towards a converged packet-switched MPLS system is now
More informationSDN/Virtualization and Cloud Computing
SDN/Virtualization and Cloud Computing Agenda Software Define Network (SDN) Virtualization Cloud Computing Software Defined Network (SDN) What is SDN? Traditional Network and Limitations Traditional Computer
More informationCARRIER LANDSCAPE FOR SDN NEXT LEVEL OF TELCO INDUSTRILIZATION?
CARRIER LANDSCAPE FOR SDN NEXT LEVEL OF TELCO INDUSTRILIZATION? Andreas Gladisch, Fritz-Joachim Westphal Deutsche Telekom Innovation Labs COMPLEXITY BY DOZENS OF SPECIALIZED BOXES AND THOUSANDS OF PROTOCOLS.
More informationThe Benefits of SD-WAN with Integrated Branch Security
The Benefits of with Integrated Branch Security Branch Networking Today More Bandwidth, More Complexity Branch or remote office network architectures have barely changed for 15+ years. But the requirements
More informationBusiness Case for Cisco Evolved Services Platform and NFV
Business Case for Cisco Evolved Services Platform and NFV s Executive Summary New services are driving strong traffic growth as well as creating demand for service personalization and novel consumption
More informationWhite Paper. Requirements of Network Virtualization
White Paper on Requirements of Network Virtualization INDEX 1. Introduction 2. Architecture of Network Virtualization 3. Requirements for Network virtualization 3.1. Isolation 3.2. Network abstraction
More informationData Center Networking Designing Today s Data Center
Data Center Networking Designing Today s Data Center There is nothing more important than our customers. Data Center Networking Designing Today s Data Center Executive Summary Demand for application availability
More information