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size="2" onkeyup="$('fj_btn').href='forum.php?mod=redirect&ptid=298773&authorid=0&postno='+this.value" onkeydown="if(event.keyCode==13) {window.location=$('fj_btn').href;return false;}" title="跳转到指定楼层" /> <a href="javascript:;" id="fj_btn" class="z" title="跳转到指定楼层"><img src="static/image/common/fj_btn.png" alt="跳转到指定楼层" class="vm" /></a> </div> <strong> <a href="http://bbs.oecr.com/thread-298773-1-1.html" id="postnum1191356" onclick="setCopy(this.href, '帖子地址复制成功');return false;"> <em>1</em>楼</a> </strong> <div class="pti"> <div class="pdbt"> </div> <div class="authi"> <img class="authicn vm" id="authicon1191356" src="static/image/common/online_member.gif" /> <em id="authorposton1191356">发表于 2016-8-16 16:37:42</em> <span class="pipe">|</span> <a href="http://bbs.oecr.com/forum.php?mod=viewthread&tid=298773&page=1&authorid=163458" rel="nofollow">只看该作者</a> <span class="pipe">|</span><a href="http://bbs.oecr.com/forum.php?mod=viewthread&tid=298773&from=album">只看大图</a> <span class="none"><img src="static/image/common/arw_r.gif" class="vm" alt="回帖奖励" /></span> <span class="pipe show">|</span><a href="http://bbs.oecr.com/forum.php?mod=viewthread&tid=298773&extra=&ordertype=1" class="show">倒序浏览</a> <span class="pipe show">|</span><a href="javascript:;" onclick="readmode($('thread_subject').innerHTML, 1191356);" class="show">阅读模式</a> </div> </div> </div><div class="pct"><style type="text/css">.pcb{margin-right:0}</style><div class="pcb"> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_1191356"> <div align="left">如今，100G以太网在光<a href="http://ofc.oecr.com" target="_blank" class="relatedlink">通信</a>领域变得越来越流行，在数据中心也形成了一种流行的趋势。下面，我们就短距离互联的两个主要<a href="http://theory.oecr.com" target="_blank" class="relatedlink">物理</a>层标准的几个方面，一起探讨一下<strong><font face="微软雅黑"><font style="font-size:12pt">100GBASE-SR10</font></font></strong>和<strong><u><font style="color:rgb(0, 0, 255)"><font face="微软雅黑"><font style="font-size:12pt">100GBASE-SR4</font></font></font></u></strong><font face="微软雅黑"><font style="font-size:12pt">光模块</font></font>之间的区别。</div><div align="left"> </div><div align="left"><strong><font face="微软雅黑"><font style="font-size:12pt">光模块元器件对比</font></font></strong></div><div align="left">CFP是典型的100GBASE-SR10代表元器件。它是由竞争激烈的制造商内部规定的一种多元协议（MSA）所定义，CFP出现在小型可插拔（SFP）接口之后，但是对于用10 x 10Gbps通道实现100Gbps的数据传输意义却非同凡响。</div><div align="left">QSFP28是最新的100G以太网组成元器件，QSFP28使用4个25G的数据传输通道，其中各通道都支持最新的100/50/25G光模块和设备互联。因而，它是100GBASE-SR4最具代表性的组成元器件。</div><div align="center"> <ignore_js_op> <img style="cursor:pointer" id="aimg_96093" aid="96093" src="static/image/common/none.gif" onclick="zoom(this, this.getAttribute('zoomfile'), 0, 0, '0')" zoomfile="data/attachment/forum/201608/16/163643fumjv7r3l3cqr43t.jpg" file="data/attachment/forum/201608/16/163643fumjv7r3l3cqr43t.jpg.thumb.jpg" inpost="1" onmouseover="showMenu({'ctrlid':this.id,'pos':'12'})" /> <div class="tip tip_4 aimg_tip" id="aimg_96093_menu" style="position: absolute; display: none" disautofocus="true"> <div class="xs0"> <p><strong>initpintu_副本.jpg</strong> <em class="xg1">(104.81 KB, 下载次数: 22)</em></p> <p> <a href="http://bbs.oecr.com/forum.php?mod=attachment&aid=OTYwOTN8Y2QyNDQ5N2N8MTc2NjA4MjY4M3wwfDI5ODc3Mw%3D%3D&nothumb=yes" target="_blank">下载附件</a> <a href="javascript:;" onclick="showWindow(this.id, this.getAttribute('url'), 'get', 0);" id="savephoto_96093" url="home.php?mod=spacecp&ac=album&op=saveforumphoto&aid=96093&handlekey=savephoto_96093">保存到相册</a> </p> <p class="xg1 y">2016-8-16 16:36 上传</p> </div> <div class="tip_horn"></div> </div> </ignore_js_op> </div><div align="left">结论：从外形来看，QSFP28比CFP更加流行。</div><div align="left"> </div><div align="left"><strong><font face="微软雅黑"><font style="font-size:12pt">尺寸对比</font></font></strong></div><div align="left">100GBASE-SR4和100GBASE-SR10接口的收发器分别对应于QSFP28和CFP。因此，它们具有在尺寸显著差异。如下图所示，CFP尺寸要比QSFP28大得多。 显而易见，CFP不适合于高密度的应用。相比之下，QSFP28增加了前面板的密度，降低了功耗，而且价格也相对便宜。因而，QSFP28比CFP更受欢迎。</div><div align="center"> <ignore_js_op> <img style="cursor:pointer" id="aimg_96094" aid="96094" src="static/image/common/none.gif" onclick="zoom(this, this.getAttribute('zoomfile'), 0, 0, '0')" zoomfile="data/attachment/forum/201608/16/163658yv3tc0v64xytt34b.png" file="data/attachment/forum/201608/16/163658yv3tc0v64xytt34b.png.thumb.jpg" inpost="1" onmouseover="showMenu({'ctrlid':this.id,'pos':'12'})" /> <div class="tip tip_4 aimg_tip" id="aimg_96094_menu" style="position: absolute; display: none" disautofocus="true"> <div class="xs0"> <p><strong>2.png</strong> <em class="xg1">(28.34 KB, 下载次数: 28)</em></p> <p> <a href="http://bbs.oecr.com/forum.php?mod=attachment&aid=OTYwOTR8M2E1MDVlMGN8MTc2NjA4MjY4M3wwfDI5ODc3Mw%3D%3D&nothumb=yes" target="_blank">下载附件</a> <a href="javascript:;" onclick="showWindow(this.id, this.getAttribute('url'), 'get', 0);" id="savephoto_96094" url="home.php?mod=spacecp&ac=album&op=saveforumphoto&aid=96094&handlekey=savephoto_96094">保存到相册</a> </p> <p class="xg1 y">2016-8-16 16:36 上传</p> </div> <div class="tip_horn"></div> </div> </ignore_js_op> </div><div align="left">结论：随着高密度已经成为数据中心的一种趋势，为了满足这一需求，QSFP28（100GBASE-SR4）相对于CFP（100GBASE-SR10）更具优势。</div><div align="left"> </div><div align="left"><strong><font face="微软雅黑"><font style="font-size:12pt">光电通道图对比</font></font></strong></div><div align="left">下图展示了<strong><u><font style="color:rgb(0, 0, 255)"><font face="微软雅黑"><font style="font-size:12pt">100GBASE-SR4</font></font></font></u></strong> 和 100GBASE-SR10的基本构造:</div><div align="center"> <ignore_js_op> <img style="cursor:pointer" id="aimg_96095" aid="96095" src="static/image/common/none.gif" onclick="zoom(this, this.getAttribute('zoomfile'), 0, 0, '0')" zoomfile="data/attachment/forum/201608/16/163715y0k54yiz45sh9hls.jpg" file="data/attachment/forum/201608/16/163715y0k54yiz45sh9hls.jpg.thumb.jpg" inpost="1" onmouseover="showMenu({'ctrlid':this.id,'pos':'12'})" /> <div class="tip tip_4 aimg_tip" id="aimg_96095_menu" style="position: absolute; display: none" disautofocus="true"> <div class="xs0"> <p><strong>3.jpg</strong> <em class="xg1">(118.83 KB, 下载次数: 23)</em></p> <p> <a href="http://bbs.oecr.com/forum.php?mod=attachment&aid=OTYwOTV8MjllOGQ4OTR8MTc2NjA4MjY4M3wwfDI5ODc3Mw%3D%3D&nothumb=yes" target="_blank">下载附件</a> <a href="javascript:;" onclick="showWindow(this.id, this.getAttribute('url'), 'get', 0);" id="savephoto_96095" url="home.php?mod=spacecp&ac=album&op=saveforumphoto&aid=96095&handlekey=savephoto_96095">保存到相册</a> </p> <p class="xg1 y">2016-8-16 16:37 上传</p> </div> <div class="tip_horn"></div> </div> </ignore_js_op> </div><div align="center"> <ignore_js_op> <img style="cursor:pointer" id="aimg_96097" aid="96097" src="static/image/common/none.gif" onclick="zoom(this, this.getAttribute('zoomfile'), 0, 0, '0')" zoomfile="data/attachment/forum/201608/16/163716s9zmj74zprf9bbsm.jpg" file="data/attachment/forum/201608/16/163716s9zmj74zprf9bbsm.jpg.thumb.jpg" inpost="1" onmouseover="showMenu({'ctrlid':this.id,'pos':'12'})" /> <div class="tip tip_4 aimg_tip" id="aimg_96097_menu" style="position: absolute; display: none" disautofocus="true"> <div class="xs0"> <p><strong>5.jpg</strong> <em class="xg1">(104.57 KB, 下载次数: 23)</em></p> <p> <a href="http://bbs.oecr.com/forum.php?mod=attachment&aid=OTYwOTd8Y2FiYTBhYjN8MTc2NjA4MjY4M3wwfDI5ODc3Mw%3D%3D&nothumb=yes" target="_blank">下载附件</a> <a href="javascript:;" onclick="showWindow(this.id, this.getAttribute('url'), 'get', 0);" id="savephoto_96097" url="home.php?mod=spacecp&ac=album&op=saveforumphoto&aid=96097&handlekey=savephoto_96097">保存到相册</a> </p> <p class="xg1 y">2016-8-16 16:37 上传</p> </div> <div class="tip_horn"></div> </div> </ignore_js_op> </div><div align="left">结论:100GBASE-SR4能够以较少通道数量实现各通道更高的数据传输速率，以便可以减小端口密度。</div><div align="left"> </div><div align="left"><strong>线缆和连接器类型对比</strong></div><div align="left">无论100GBASE-SR4还是100GBASE-SR10都采用光学<a href="http://laser.oecr.com" target="_blank" class="relatedlink">激光</a>优化多模光纤（OM3/ OM4）来传输信号。但100GBASE-SR4用一根12芯的标准QSFP MPO/ MTP连接线（4 Tx和4 Rx，每个通道提供25 Gbps的吞吐量）来连接，而100GBASE-SR10则使用2×12芯或24芯 MPO/ MTP连接线（10 Tx和10 RX，每个LAN提供吞吐量25 Gbps）来发射的同时，100GBASE-SR10还使用2×12芯 或24芯 MPO/ MTP 线缆（10 Tx和10Rx，每个通道提供吞吐量的10 Gbps）来连接。</div><div align="left">100GBASE-SR4和100GBASE-SR10的接口光学上可分别达到4×25 Gbps和10×10 Gbps的数据传输速率，因此，它们只需使用MPO/ MTP到LC主干跳线就能轻而易举的完成25GbE/10 GbE 到 100 GbE的升级。</div><div align="center"> <ignore_js_op> <img style="cursor:pointer" id="aimg_96096" aid="96096" src="static/image/common/none.gif" onclick="zoom(this, this.getAttribute('zoomfile'), 0, 0, '0')" zoomfile="data/attachment/forum/201608/16/163715vy2811xvljtzxz37.jpg" file="data/attachment/forum/201608/16/163715vy2811xvljtzxz37.jpg.thumb.jpg" inpost="1" onmouseover="showMenu({'ctrlid':this.id,'pos':'12'})" /> <div class="tip tip_4 aimg_tip" id="aimg_96096_menu" style="position: absolute; display: none" disautofocus="true"> <div class="xs0"> <p><strong>4.jpg</strong> <em class="xg1">(110.77 KB, 下载次数: 26)</em></p> <p> <a href="http://bbs.oecr.com/forum.php?mod=attachment&aid=OTYwOTZ8YTM1MGNiMzN8MTc2NjA4MjY4M3wwfDI5ODc3Mw%3D%3D&nothumb=yes" target="_blank">下载附件</a> <a href="javascript:;" onclick="showWindow(this.id, this.getAttribute('url'), 'get', 0);" id="savephoto_96096" url="home.php?mod=spacecp&ac=album&op=saveforumphoto&aid=96096&handlekey=savephoto_96096">保存到相册</a> </p> <p class="xg1 y">2016-8-16 16:37 上传</p> </div> <div class="tip_horn"></div> </div> </ignore_js_op> </div><div align="left">结论：100GBASE-SR4使用12芯MPO/ MTP跳线，而100GBASE-SR10使用两根12芯或一根24芯MPO/ MTP跳线。对于100G点到点互联来说，100GBASE-SR4更具成本效益。对于网络迁移，100GBASE-SR4也更具优势，因为它的分支更少，可大大降低线缆管理的成本。</div><div align="left"> </div><div align="left">总而言之，<strong><u>100GBASE-SR4</u></strong>提供主机板的布局优势，大大减少了布线的数量。同时，100GBASE-SR4在成本和功耗更具有竞争力，所以目前100GBASE-SR10已经慢慢退出市场。飞速光纤（Feisu.com）是一家致力于光通讯<a href="http://b.oecr.com/sell" target="_blank" class="relatedlink">产品</a>研发设计并提供系统解决方案的公司，供应一系列100GBASE-SR4<strong><u>光模块</u></strong>，可与各大品牌的交换机兼容。</div><br /> </td></tr></table> </div> <div id="comment_1191356" class="cm"> </div> <div id="post_rate_div_1191356"></div> </div> </div> </td></tr> <tr><td class="plc plm"> <div id="p_btn" class="mtw mbm hm cl"> <a href="http://club.oecr.com/home.php?mod=spacecp&ac=favorite&type=thread&id=298773&formhash=5fc55b3a" id="k_favorite" onclick="showWindow(this.id, this.href, 'get', 0);" onmouseover="this.title = $('favoritenumber').innerHTML + ' 人收藏'" title="收藏本帖"><i><img src="static/image/common/fav.gif" alt="收藏" />收藏<span id="favoritenumber" style="display:none">0</span></i></a> <a class="followp" href="home.php?mod=spacecp&ac=follow&op=relay&tid=298773&from=forum" onclick="showWindow('relaythread', this.href, 'get', 0);" title="转播求扩散"><i><img src="static/image/common/rt.png" alt="转播" />转播</i></a> <a class="sharep" href="home.php?mod=spacecp&ac=share&type=thread&id=298773" 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