我们12月17日网络研讨会的问题和答案在802.11ac上

我们举办了一个出色的网络研讨会，”802.11ac在这里。比你想象的要好" on December 17th with guests from Forrester Research Inc. and Yale University. Our guest on our discussion panel were:

如果您错过了网络研讨会，可以点击这里并观看按需录制的会话或下载演示文稿幻灯片。

我们收到的问题比在面板上有时间掩盖更多的问题，因此请在下面找到您的问题。

问题	Answer
802.11ac设备的运输方式，它们的性能如何？	是的，他们自2013年中期以来一直发货，而且表现良好。您可以在802.11ac上访问Aruba的网站以查看一些性能号码这里。
是否有来自多供应商的802.11ac移动设备，手机和平板电脑的列表？	是的best place to find the most accurate information is the Wi-Fi Alliance search tool that allows you to search for 802.11ac certified products by category. The link to access the tool is这里。目前有超过230种为802.11ac认证的产品。
您是否听说过苹果iPad和iPhone何时获得802.11ac的支持？那Android和三星设备呢？	不，即使与其业务合作伙伴，苹果在新硬件方面也非常秘密。我希望下一个硬件修订会采用它，因为他们已经在笔记本电脑和台式产品线上移至802.11ac，并为了利用功率效率，这是由三星，摩托罗拉和HTC在内的Android竞争对手所显示的已经在其智能手机和平板电脑平台上采用了802.11ac。
无线接入点和设备必须支持11AC，对吗？例如，假设我的WAP支持11BGN，而我的智能手机支持11AC，那么我不会在设备上获得11AC好处，对吗？	如果您的访问点（WAP）仅支持802.11BGN，那么您的802.11ac智能手机将在升级访问点之前不会看到任何好处。但是，如果您拥有802.11ac AP，您仍然会为您的Legacy 802.11BGN设备获得好处。我们看到平均大约30％的好处，并且在离AP的进一步距离上更大。
我可以将AP-135（802.11N）和AP-225（802.11ac）混合在单个建筑物中吗？除工作人员办公室和“平均”密度室外，我们的教室建筑物中还有高密度的大礼堂。	是的,我们是推荐这个方法customers who are not ready (or don't yet have the network demands) to move their entire network to 802.11ac. We recommend in this case deploying the 802.11ac APs in the areas where you have either the highest density or where the application bandwidth requirements are most challenging.
从.11N AP升级到.11ac是否需要新的POE开关来为它们供电吗？	No. Existing PoE switches can be used with most vendors' 802.11ac APs, Aruba included. If you are upgrading your switches in the future you should ensure they are capable of PoE+ (802.3at) in order to future proof them as this is likely the last generation of Wi-Fi APs that can operate on PoE (802.3af) power. For more information on Aruba's line of Mobility Access Switches, you can learn more这里。
Where do you believe we are on the overall adoption curve for 802.11ac?	While we are fairly early in the adoption cycle for 802.11ac, we are seeing the transition to 802.11ac happening much faster than the prior transition to 802.11n. I believe this is driven by the explosion of devices and data-hungry applications that employees and students are bringing into the office and campus. We are already seeing some vendors such as Apple implement 802.11ac across their entire desktop and laptop product lines and many smartphones and tablets have already adopted 802.11ac. In fact just taking a single product, the 802.11ac Samsung Galaxy S4 smartphone, it has shipped over 40 Million devices as of October 2013.
与a，b，g或n相反，802.11ac有何不同，新兴标准将与此不同？	802.11n支持2.4GHz和5GHz频带，而802.11ac仅限于5GHz带。802.11N的Wi-Fi联盟认证最多可支持30MHz频道的3个空间流。802.11ac通过以下方式扩展了802.11n标准的基础：（a）将通道宽度扩展到160MHz（当前11AC产品中支持80MHz）；（b）采用一种新的256-QAM编码方法，效率提高33％；（c）最多允许8个空间流（当前的11AC产品支持高达3个空间流）；（d）采用单一类型的显式传输光束成形；（e）添加多用户MIMO，以便AP可以同时传输到一个以上的客户端（预计将在2015 - 2016年的第2波产品中实现）。
当前，当前的交流接入点发生时，是否会支持完全批准的交流标准？	IEEE 802.11ac最终标准于2013年12月批准，并于12月18日发布，可用这里。The current 802.11ac Access Points adhere to a subset of the features in the final standard as certified by the Wi-Fi Alliance. The next iteration of Wi-Fi Alliance 802.11ac Wave 2 certification is likely to enter the market in late 2015-2016 and the additional features will require new radio chipsets. The enterprise Access Points utilizing these chipsets will also require additional CPU processing power and uplinks over 1 GigE to support the higher speeds and therefore the current products will not be software upgradable nor will modular APs be able to realize the improved speeds.
芯片制造商宣布了四种流802.11ac设备的可用性。Aruba什么时候期望提供四潮802.11ac？	This will likely be part of Wave 2. As with other vendors in this space, we expect to see enterprise-class Wave 2 APs in late 2015.
我们什么时候可以期望802.11ac Wave 2认证和产品可以使用？	Late 2015 is when Aruba and most vendors are expecting to have enterprise-grade Wave 2 APs. Note that these will require in excess of 1 gigabit Ethernet to the AP and will require Wave 2 capable clients to take advantage of some fo the new features in Wave2.
During the discussion of the standards process, the speaker did not discuss the multiple stages (WAVES) of the 802.11ac standard. Why did they break 802.11ac into wave-1 and wave-2?	There is an article on our Airheads community这里that discusses Wave 1 and Wave 2这里that discusses Wave 1 and Wave 2. Like with 802.11n, portions of the standard will be selected for vendor interoperability certification by the Wi-Fi Alliance in multiple phases. This is typically done due to the complexity of the radio chipset designs and CPU power required to implement the features such as additional spatial streams and extensions to MIMO.
批准标准后，具有新标准的产品需要多长时间？	鉴于Wi-Fi产品的异质性如何，由于Wi-Fi Alliance认证计划的驱动更大，因此产品可用性更大，因为这确保了客户和多个供应商的访问点之间的互操作性。正如我们在802.11ac和802.11n中看到的那样，这些产品通常在两个波浪中获得，其中每个认证程序都建立在整个标准中不断增长的子集中。自2013年中期以来，第一波802.11ac产品已发行，现在802.11ac标准在今年12月批准了，我们预计第二波产品将于2015年底开始出现，因为芯片组制造商仍在研究设计和芯片可用后，然后企业基础架构供应商将将这些供应商实施到访问点。
802.11ac是否会影响可以通过单个接入点连接的用户数量，还是主要是关于单个用户的吞吐量？	是的。Since 802.11ac supports higher data rates, clients are able to transmit their data faster and this leaves more air time free to support a higher number of users.
802.11ac是否会增加距离性能？	802.11ac通过利用显式传输光束形成在给定范围内提高数据速率。
What will be the impact of Qualcomm proposing LTE into the 3.5G band onto future of Wi-Fi.	With Wi-Fi currently operating in the 2.4GHz and 5GHz bands there is no impact of LTE if it is deployed in the non-interfering 3.5GHz band. Currently LTE/TD-LTE only interferes with the 2.4GHz band where the LTE side lobes can extend beyond their 2.3GHz to cause some interference. Some newer Wi-Fi APs such as the Aruba AP-115 (802.11n) and AP-225 (802.11ac) have cellular interference mitigation features designed to minimize the impact by filtering out the interference.
您能谈谈802.11ac中的安全性吗？它主要是我们使用WPA2获得的，还是还有更多？	802.11AC利用了前802.11N标准的一部分的WPA2个人和WPA2企业。它引入的新安全功能是能够减轻802.11N访问点无法完成的802.11ac Rogue设备。有关此信息的更多信息，您可以观看我们的按点数802.11AC安全网络研讨会，该网络研讨会通过单击即可举办这里。
您是否希望802.11ac能够支持仅无线基础架构？	是的。802.11交流带来千兆速度wireless connection it is able to deliver the client densities and performance required to enable a wireless office where the switching infrastructure can be rightsized and unneeded ports eliminated. We have a growing number of large offices that are relying on the wireless connection for both their data and VoIP communication to run their businesses and slashing their infrastructure costs.
使用BYOD，您还如何解决PCI和HIPAA合规性等安全问题？	您可以使用诸如Aruba Networks之类的产品ClearPassto differentiate access for all users carrying personal devices (BYOD). To meet PCI and HIPAA requirements policies can be created where user roles and personal devices are granted or restricted from reaching workflows that have anything to do with credit card or ePHI resources. Additionally, restrictions can be implemented that deny personal devices from connecting to the guest network which will eliminate users from creating VPN connections back into enterprise network. The空波管理套件还可以帮助识别Rogue AP并查明与这些AP相连的人连接的位置。Airwave中有针对PCI的特定报告。
11AC需要RF计划吗？您会使用定向天线和扇形细胞吗？	是的，由于它利用了由802.11N利用的2.4GHz和5GHz乐队，因此您应该进行RF计划，以正确设计AP放置和频道选择，以提供最佳的性能和覆盖范围。Aruba Airwave和Aruba VisualRF计划等产品可在计划过程中为您提供帮助。Aruba客户可以从我们的支持网站下载VisualRF计划工具这里。最好通过利用AP-225内置的集成的Omni方向天线来为大多数客户提供最好的服务，但是我们确实支持AP-224的外部定向或截面触角。
您如何预期使用802.11ac中提供的更宽的频道宽度来处理频道规划技术？这会使它更加复杂并干扰更高的密度部署吗？	您应该执行RF计划，以最大程度地减少部署的频道重叠并最大化性能。借助较宽的80MHz频道，您部署中仍然有5个非重叠渠道可以利用。如果您的网络混合了802.11ac和802.11n访问点，则您还应考虑计划中的802.11N AP，以最大程度地减少AP何时需要退缩到暂时缩小频道的情况。幸运的是，该标准旨在允许对通道宽度进行快速协商，因此在干扰时间内可以自动下降至40MHz或20MHz，并在可能的情况下返回80MHz操作。
控制器上的Arubaos何时能够为802.11ac运行RF预测覆盖范围？	The current shipping version of the Aruba AirWave management suite already supports the ability to display predictive RF coverage maps for 802.11ac. More information on the AirWave product is available这里。
当连接多个设备时，速度会被降低到n中最慢的连接吗？	No, Aruba has capabilities like Airtime Fairness that keep the AP from throttling down if slower devices connect.
Is 802.11ac able to handle video streaming? (Netflix, Hulu plus)	是的，借助802.11ac访问点的较高吞吐量，可以支持大量用户的视频流。视频流的增长是许多组织今天推出802.11ac的驱动因素之一。
Did Yale run two GigE backhaul circuits to each access-point location?	否。耶鲁大学目前正在利用每次AP的一个GIGE链接。
大卫是否说他已经在整个校园中推出了802.11AC？	No, he rolled it out in a new building on campus and has validated 11ac before beginning a more significant rollout.
802.11 IEEE标准仍然是有效的机制吗？我认为，无线行业正在向前发展，而不是等待任何标准的批准。	是的。Wi-Fi Alliance在批准前后都将成为验证互操作性的合法性。但是，IEEE批准仍然是消除任何情况会改变的任何疑问的关键里程碑。
Aruba 802.11ac AP-225是双Radio（A，B，G，N）产品吗？	是的AP-220/IAP-220系列of 802.11ac products are dual-radio with one radio in the 5GHz band for 802.11ac (and 11a/11n clients) and the second radio operates in the 2.4GHz band. This enables customers to support the newer 802.11ac devices while also supporting the legacy devices that can only operate in the 2.4GHz band.
Aruba是否有有关其Wi-Fi访问点的配置的网络研讨会？	We don't currently have any webinars that cover this topic. The best resource for learning out to configure and deploy an Aruba WLAN is our training portal, specifically the Mobility track, which is located这里。