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QSDN有什么好处？
A 1. Easy to setting up networks in an SDN like creating virtual machine instances. 2. More network flexibility. SDNs enable experiment freely with new network configurations without being hamstrung by their consequences. 3. Better security. SDNs can provide the kind of find-grained security for apps, endpoints and any networked devices. 4. Lower operating expenses. 5. Virtual network services. For SDN, there're plenty of ways for enterprises to lower their capex by making better use of what enterprises already have, and by lessening dependencies on proprietary appliances.
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QOpenFlow与SDN会成为网络的未来吗?
ASDN(OPENFLOW) is the trend of the market and is happening at the moment. It brings lots of benefits, like flexiblity, speed and easy maintenance. No one can deny SDN will become the main streams of networking. But no one can assure you how strong it will get and how long it will last. Let's see in the future!
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QSDN无层网络与TCP/IP分层网络哪个比较好？
AIt is hard to say which one is better. As to control and efficency, the idea of SDN is good. For expansion and globalization, it is not good compared to TCP/IP. TCP/IP internet was built for quite a long time and are still growing rapidly at the moment. TCP/IO is not perfect, but still get evolving.
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Q飞思卡尔在SDN方面主要有哪些产品？
AFreescale QorIQ P2/P3/P4 are widely used in top-of-rack switches for SDN in the market. QorIQ T-series are suitable for higher bandwidth switches, controller and servers. C29x security co-processors are good for security off-load usage.
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QQorlQ通信处理器采用什么架构？
AQorIQ use 32 and 64 bit Power Architecture for the core (E500mc, E5500, E6500), optionally it has a 128bit vectore processor (Altivec engine) to improve computation intensive application. Regards to manage workload among multiple cores, we have Data Path Acceleration Architecture (DPAA) to accelerate IO processing (10/1G etnernet, RapidIO, etc) and hardware accelerators (encryption, compression, DPI, etc). More information is available from our website at http://www.freescale.com/zh-Hans/webapp/sps/site/homepage.jsp?code=QORIQ_HOME
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Q飞思卡尔的产品优势在哪？
A Freescale QorIQ series have many features, like low power consumption, high CPU MIPS performance, security offload(IPsec, SSL) or pattern match accelerator engine. Freescale also provide software development kit to speed up software development. Besides, Freescale also provides product longevity program which makes a broad range of devices available for a minimum period of 10 years.
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QSDN主要是用在数据中心网络吗？
ASo far, SDN is primarily used in data center. But it expands greatly on campus and many infrastructures.
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QSDN一定要使用Openflow协议来配置转发面吗？
A Openflow now seems to be the most accepted protocol that defines the SDN concept. Openflow is developed by ONF and is constantly being updated by the community.
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Q飞思卡尔技术支持联系方式能提供下吗?
AWe provide online and phone support. Please refers to Freescale home page: e.g. http://www.freescale.com/webapp/sps/site/homepage.jsp?code=SUPPORTHOME If you buy from the distrobutor, you may able to get support from the official distributors. Professional engineering services are available upon request.
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QSDN要求硬件转发面的标准化？
A这只是Openflow的要求，并不是SDN的要求。而实际上，目前很多厂商，包括某些标准组织都没有刻意去追求硬件转发面的标准化，尽管有些人确实在做这个工作，但至少这不是所有人的共识。哪怕是Openflow的标准组织ONF，目前也在考虑一种折衷方案
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Q贵公司支持SDN应用的产品都有哪些？
A SDN function is supported in our QorIQ product line. QorIQ product line with the DPAA is able to accelerate the operation required to implmenet Openflow protocol. Some actions like table lookup, traffic parcing, and QoS are offloaded to hardware engine to improve overall performance.
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QSDN设备可以代替所有层次的设备？
A Not necessary. Some companies thought some parts of the networks don’t need to be updated with SDN technology, such as the core network which is adequately provisioned already for near-term increases in traffic. Both the carrier edge and data center networks, however, need to be redesigned for improved flexibility, given the lack of visibility into the future mix of applications or the growth in workloads. Scalability remains a significant challenge.
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Q飞思卡尔 SDN采用的是开放API接口还是Overlay？
AFreescale provides silicon solution for SDN applications. We don't sell SDN end products. So our software development kit is open for any high level API.
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QSDN Controller都是集中式控制？
A Yes, it is centalized management.
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Q请问，数据中心的转型已经到了什么阶段？
ANow, many data centers are being tasked with new types of technological requirements. This can range from hosting a virtual desktop infrastructure to running a cloud platform. Many organizations are now adopting some type of cloud model. Whether it’s public, private, hybrid or community – businesses are seeing benefits in a cloud computing platform.
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QSDN设备需要特殊的SDN芯片支持吗？
ANo particular HW is needed, but a network chip with security offload feature is better. The OPENFLOW protocol (used in SDN) can be impemented in software. However, openflow uses SSL encryption method. A network chip with security offload function can speed up the traffic processing.
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QM2M应用中怎么保证可靠性？
AThe reliability of a system is given by the reliability of the individual components, so increasing reliability can often be done by introducing redundancy into the system. Redundant elements are additional resources beyond what is needed for normal provision of system services. A thing that often impacts the reliability of a service is how the daily operation of a system is maintained. Operation and Maintenance (O&M) deals with how the daily functionalities of a service are upheld. When failures occur, the severity of them may be greatly impacted by how fast they can be corrected. Additionally, how failures are corrected may also be an important aspect. A poorly trained maintenance crew might also result in decreased repair rates, and as a result of this, longer periods of down time.In order to provide a reliable M2M service, it is important to have a skilled O&M organization to maintain the service in the best possible way. If there is a break down of an important component, this must quickly be detected, and the fault corrected as soon as possible.
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QCloud Computing只有这三种方式吗？
AThere're four service models, infrastructure as a service(IaaS), platform as a service(PaaS), software as a service(SaaS) and network as a service(NaaS).
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QSDN在成本上有什么优势？
AAs to the hardware cost, there's no big difference for SDN comparing with currrent networking equipments. However, However, with the SDN equipments being more modulized and more popular, the cost of each equipments can become lower. Besides, SDN can save a lot of efforts on management and maintenance. That might save a lot of costs on human resources.
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QSDN硬件和软件的分离会不会造成很多问题？
AFor engineers, they need to deal with many technical issues, hw or sw. They need to implement OPENFLOW protocol in their system and do many protocol tests. Especially, software is more important in implementing a SDN network than the legancy network.
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