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type="text/css"></style> <div id="ct" class="ct2 wp cl"> <div class="mn"> <div class="bm_haa cl"> <div class="bm_h cl"> <a href="http://www.oecr.com/portal.php?mod=rss&catid=57" class="y xi2 rss" target="_blank" title="RSS">订阅</a><h1 class="xs2">文章</h1> </div></div> <div class="kjkjb"> <div class="bm vw" style="margin-bottom:0;"> <div class="h hm"> <div class="zxtoux"><img src="http://www.oecr.com/uc_server/avatar.php?uid=54876&size=small" /></div> <h1 class="ph">云服务和Web 2.0加速10G以太网的普及 </h1> <p class="xg1"> 时间：2011-7-27 10:36<a class="zz" href="home.php?mod=space&uid=54876">作者：update</a> 阅读<em id="_viewnum">(1272)</em> 评论: <a href="http://www.oecr.com/portal.php?mod=comment&id=2258&idtype=aid" title="查看全部评论"><em id="_commentnum">1</em></a></p> <div class="zxfb" ><a href="http://www.oecr.com/portal.php?mod=rss&catid=57" class="y xi2 rss" target="_blank" title="RSS">订阅</a></div> </div> <!--[diy=diysummarytop]--><div id="diysummarytop" class="area"></div><!--[/diy]--> <div class="s"> <div class="ss"><div><span>导读： </span>随着基于云的服务和应用的普及，以及Web 2.0时代的到来，以太网正加速向10G以太网普及，其市场份额约占总额为180亿美元以太网交换机市场的25%；下一代40G/100G以太网产品也已经问世，高速、大容量、低成本以太网时代 ...</div> </div> <!--[diy=diysummarybottom]--><div id="diysummarybottom" class="area"></div><!--[/diy]--> <div class="d"> <!--[diy=diycontenttop]--><div id="diycontenttop" class="area"></div><!--[/diy]--> <table cellpadding="0" cellspacing="0" class="vwtb"><tr><td id="article_content">随着基于云的服务和应用的普及，以及Web 2.0时代的到来，以太网正加速向10G以太网普及，其市场份额约占总额为180亿美元以太网交换机市场的25%；下一代40G/100G以太网<a href="http://b.oecr.com/sell" target="_blank" class="relatedlink">产品</a>也已经问世，高速、大容量、低成本以太网时代已经到来。<BR><BR>LSI<a href="http://b.oecr.com/company" target="_blank" class="relatedlink">企业</a>战略市场营销部总监Manish Muthal认为，当今部署在数据中心服务器机架上的典型服务器都配有2个或者3个高功耗适配器，用以连接网络(以太网)、存储(光纤通道)和集群(InfiniBand或者专有互联)3个完全不同的结构中。<BR><BR>“这些截然不同的结构导致了‘网络蔓延’现象的出现。”他说，“数以万计的线缆通过成百上千的网络交换机、路由器和应用设备，将成千上万的服务器和存储设备连接在一起。所有这些必然会导致功耗与冷却成本的增加，以及管理这些结构所需的CAPEX和OPEX成本的增长。”<BR><BR>博通认为，中国的众多市场，如数据中心、移动基础设施、宽带汇聚和核心网络，都看到了对基于10G以太网产品的持续需求。该公司基础设施与网络事业部副总裁兼首席技术官Nicholas Ilyadis表示，不同于过去20年中发生的传统演进方式，眼下的中国市场正快速向基于云的计算模式转变，这也加速了对大型数据中心以及接入宽带和无线网络所需基础设施的需求。对目前正处于构建初始阶段的中国而言，为实现上述转换，市场对高带宽和经济实惠的以太网的需求将不断出现。<BR><BR>发展绿色以太网成共识<BR><BR>Nicholas Ilyadis分析道，随着移动互联业务带来海量数据处理，以及云计算时代的到来，未来以太网的一个重要发展趋势就是利用IEEE1588协议使以太网络可为分组数据提供定时服务，从而使基站和其他设备可以从网络中导出准确的定时参考。同时，随着节能以太网(简称EEE)在2010年底成为IEEE的标准，惠普和戴尔已经率先推出了第一批产品，其后还将有更多追随者。<BR><BR>下一代数据中心的大量功耗需求，使以太网成为了整体的节能方程。Ilyadis说，博通支持EEE的设备可以为自身节省高达75%的功耗，为系统节省达35%的功耗。而近期发布的以40G/100G以太网产品为代表的高容量交换结构，则可以创造大规模发布交换系统，并提供超过100Tb/s的吞吐量。此外，建立单级架构的能力，使得数据中心的建设具有非常低的延迟和高截面带宽。但目前，业界面临的最主要挑战仍是如何转移至100G以太网背板和短距离铜缆连接，博通正与IEEE协作制定下一代<a href="http://theory.oecr.com" target="_blank" class="relatedlink">物理</a>层标准，试图尽快解决上述问题。<BR><BR>Manish Muthal则预测说，鉴于未来新一代的数据中心将采用“扁平的一体化环保型”结构，网络也将从多网络的层级模型向集成度更高的、单层单网络模型演进。“我们将看到由数据中心资源集中化的持续性优势所带来的运营成本和能耗成本的下降。也将更加依赖包括以太网光纤通道(FCoE)和传统高速(千兆位和万兆位)以太网在内的连接技术，以满足富媒体内容不断增长的需求。”<BR><BR>为体现对未来绿色网络基础设施的关注，Marvell(美满<a href="http://electronic.oecr.com" target="_blank" class="relatedlink">电子</a>)日前就宣布推出三款Link Street以太网系列和业界首款采用40<a href="http://material.oecr.com" target="_blank" class="relatedlink">纳米</a><a href="http://optics.oecr.com" target="_blank" class="relatedlink">工艺</a>的八端口千兆以太网收发器 Alaska V系列。同期发布的产品还包括四端口88X3140和双端口88X3120 Alaska X PHY芯片。<BR><BR>Marvell方面称，上述产品在铜质双绞线上实现了10Gb以太网连接，其在100米距离时单个端口功耗为2.5瓦。此外，Marvell还基于Marvell Prestera-CX交换机芯片开发出了参考设计，在1RU机架配置下支持多达48个10GBASE-T端口。 <DIV><FONT color="#808080" size=2><IMG src="http://www.oecr.com/xwb/images/bgimg/icon_logo.png"> 已同步至 <a href="http://ome.ac.cn/index.php?m=show&id=15433053017" target="_blank">update的微博</A></FONT></DIV></td></tr></table> <!--[diy=diycontentbottom]--><div 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