【基础知识】关于百兆和千兆，你必须知道的
<section style="background-color: rgb(255, 255, 255); box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style=" box-sizing: border-box; " powered-by="xiumi.us"><section class="" style=" margin-top: 0.5em; margin-left: 30%; line-height: 1em;box-sizing: border-box; "><section class="" style="width: 0px; display: inline-block; vertical-align: bottom; border-bottom-width: 13px; border-bottom-style: solid; border-bottom-color: rgb(249, 110, 87); border-left-width: 13px !important; border-left-style: solid !important; border-left-color: transparent !important; border-right-width: 13px !important; border-right-style: solid !important; border-right-color: transparent !important; box-sizing: border-box;"></section></section></section><section class="Powered-by-XIUMI V5" style=" box-sizing: border-box; " powered-by="xiumi.us"><section class="" style=" margin-bottom: 0.5em;box-sizing: border-box; "><section class="" style="height: 2.4em; border-top-left-radius: 1em; border-top-right-radius: 1em; border-bottom-right-radius: 1em; border-bottom-left-radius: 1em; background-color: rgb(249, 110, 87); box-sizing: border-box;"> <section style="display: inline-block; width: 72%; margin-top: 0.6em; line-height: 1; text-align: center; overflow: hidden; box-sizing: border-box;"><section class="" style="display: inline-block; overflow: hidden; color: rgb(255, 255, 255); font-size: 14.4px; line-height: 1.3; box-sizing: border-box;"><section style="box-sizing: border-box;">点击上方<span style="color: rgb(81, 92, 125); font-size: 15.9507648px; box-sizing: border-box;">“蓝色字体”</span> 可以订阅哦！</section></section></section></section></section></section><section class="Powered-by-XIUMI V5" style=" box-sizing: border-box; " powered-by="xiumi.us"><section class="" style=" text-align: center; margin-top: 10px; margin-bottom: 10px;box-sizing: border-box; "></section></section><section class="Powered-by-XIUMI V5" style=" box-sizing: border-box; " powered-by="xiumi.us"><section class="" style=" margin-top: 10px; margin-bottom: 10px;box-sizing: border-box; "><section class="" style="float: left; margin-left: 0.8em; box-sizing: border-box;"> <section class="" style="display: inline-block; vertical-align: top; margin-top: 0.5em; font-size: 18px; box-sizing: border-box;"><section style="box-sizing: border-box;">如何查看网络百兆还是千兆</section></section></section> <section class="" style="clear: both; box-sizing: border-box;"></section></section></section><section class="Powered-by-XIUMI V5" style=" box-sizing: border-box; " powered-by="xiumi.us"><section class="" style=" box-sizing: border-box; "><section class="" style="display: inline-block; width: 100%; vertical-align: top; box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style=" box-sizing: border-box; " powered-by="xiumi.us"><section class="" style=" box-sizing: border-box; "><section class="" style="box-sizing: border-box;"><section style="box-sizing: border-box;">电脑上，"网络"-"本地连接"，里面就有"速度"，如果是显示"100M"，即为百兆网，如果是显示"1G"，即为千兆网。</section></section></section></section></section></section></section><section class="Powered-by-XIUMI V5" style=" box-sizing: border-box; " powered-by="xiumi.us"><section class="" style=" margin-top: 10px; margin-bottom: 10px;box-sizing: border-box; "><section class="" style="float: left; margin-left: 0.8em; box-sizing: border-box;"> <section class="" style="display: inline-block; vertical-align: top; margin-top: 0.5em; font-size: 18px; box-sizing: border-box;"><section style="box-sizing: border-box;">常用码率H.264和H.265</section></section></section> <section class="" style="clear: both; box-sizing: border-box;"></section></section></section><section class="Powered-by-XIUMI V5" style=" box-sizing: border-box; " powered-by="xiumi.us"><section class="" style=" box-sizing: border-box; "><section class="" style="display: inline-block; width: 100%; vertical-align: top; box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style=" box-sizing: border-box; " powered-by="xiumi.us"><section class="" style=" box-sizing: border-box; "><section class="" style="box-sizing: border-box;"><section style="box-sizing: border-box;">对于海康威视H.264的网络摄像机来说，计算码率值时，通常是需要将主码流大小与子码流大小加起来，而H.265技术能让码流减半。</section><section style="box-sizing: border-box;"><br style="box-sizing: border-box;"></section><section style="box-sizing: border-box;">（主码流一般是高清画面，用于录像和单画面显示；子码流一般是标清画面，用于网传或者多画面显示，通常为0.5M）</section><section style="box-sizing: border-box;"><br style="box-sizing: border-box;"></section><section style="box-sizing: border-box;">不同像素的摄像机常见码率如下：</section><section style="box-sizing: border-box;">(H.264) (H.265)</section><section style="box-sizing: border-box;">100W/130W=2.5M 200W=2.5M </section><section style="box-sizing: border-box;">200W=4.5M 300W=3.5M</section><section style="box-sizing: border-box;">300W=6.5W 400W=4.5M</section><section style="box-sizing: border-box;"><br style="box-sizing: border-box;"></section><section style="box-sizing: border-box;">如果使用百兆交换机，以50%的利用率来计算，对应能接入摄像机的个数Y： </section><section style="box-sizing: border-box;"><span style="font-family: sans-serif; line-height: 1.78; box-sizing: border-box;">Y = 50M ÷（对应摄像机的码率）</span></section><section style="box-sizing: border-box;"> </section><section style="box-sizing: border-box;">从此看出，H.265技术不仅让存储减半，还可以让带宽压力也减半，节约交换机资源。</section></section></section></section></section></section></section><section class="Powered-by-XIUMI V5" style=" box-sizing: border-box; " powered-by="xiumi.us"><section class="" style=" margin-top: 10px; margin-bottom: 10px;box-sizing: border-box; "><section class="" style="float: left; margin-left: 0.8em; box-sizing: border-box;"> <section class="" style="display: inline-block; vertical-align: top; margin-top: 0.5em; font-size: 18px; box-sizing: border-box;"><section style="box-sizing: border-box;">千兆交换机or千兆口</section></section></section> <section class="" style="clear: both; box-sizing: border-box;"></section></section></section><section class="Powered-by-XIUMI V5" style=" box-sizing: border-box; " powered-by="xiumi.us"><section class="" style=" box-sizing: border-box; "><section class="" style="display: inline-block; width: 100%; vertical-align: top; box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style=" box-sizing: border-box; " powered-by="xiumi.us"><section class="" style=" box-sizing: border-box; "><section class="" style="box-sizing: border-box;"><section style="box-sizing: border-box;">而压力较大的网口，是汇集数据连接到录像机或者其他汇集设备的网口，此网口的数据量才是之前我们计算的码率之和。如码率之和超过50M，则建议采购千兆交换机。</section></section></section></section></section></section></section><section class="Powered-by-XIUMI V5" style=" box-sizing: border-box; " powered-by="xiumi.us"><section class="" style=" margin-top: 0.5em; margin-bottom: 0.5em;box-sizing: border-box; "><section style="display: inline-block; height: 10px; width: 80%; margin-top: 12px; vertical-align: top; background-image: url(http://mmbiz.qpic.cn/mmbiz_png/p8CaKzvQibq69tv1mpc2arOeFZ0C5K8XIh8KCT17CFIqqFV4XBtvGvRgUPicVqpxV6vibUoYH4wXM2TMDXIDsribbA/0?wx_fmt=png); background-color: rgb(249, 110, 87); box-sizing: border-box; background-repeat: repeat no-repeat;" class=""></section></section></section><section class="Powered-by-XIUMI V5" style=" box-sizing: border-box; " powered-by="xiumi.us"><section class="" style=" box-sizing: border-box; "><section class="" style="display: inline-block; width: 100%; vertical-align: top; box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style=" box-sizing: border-box; " powered-by="xiumi.us"><section class="" style=" box-sizing: border-box; "><section class="" style="box-sizing: border-box;"><section style="box-sizing: border-box;">1. 千兆网口通常配合超五类网线或六类网线使用。</section><section style="box-sizing: border-box;">2. 因不同交换机的实际带宽利用率不同，以上数据有上下浮动的空间。</section></section></section></section></section></section></section><section class="Powered-by-XIUMI V5" style=" box-sizing: border-box; " powered-by="xiumi.us"><section class="" style=" box-sizing: border-box; "><section style="display: inline-block; vertical-align: top; width: 35%; background-image: url(http://mmbiz.qpic.cn/mmbiz_gif/p8CaKzvQibq69tv1mpc2arOeFZ0C5K8XIicpKIvDibTbFNwSrqYFrddLqOW2j04tzf9oY3cJicsibKKp5HsHloK0z1w/0?wx_fmt=gif); background-size: 100%; background-attachment: scroll; box-sizing: border-box; background-position: 50% 50%; background-repeat: no-repeat no-repeat;" class=""><section class="Powered-by-XIUMI V5" style=" box-sizing: border-box; " powered-by="xiumi.us"><section class="" style=" text-align: center; margin-top: 10px; margin-bottom: 10px;box-sizing: border-box; "></section></section></section><section class="" style="display: inline-block; vertical-align: top; width: 65%; box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style=" box-sizing: border-box; " powered-by="xiumi.us"><section class="" style=" margin: 10px 0%; font-size: 12.8px;box-sizing: border-box; "><section class="" style="padding: 2px; display: inline-block; background-color: rgb(243, 191, 30); box-sizing: border-box;"><section class="" style="padding-right: 8px; padding-left: 8px; margin-right: 5px; display: inline-block; background-color: rgb(249, 110, 87); color: rgb(255, 255, 255); box-sizing: border-box;"><section style="box-sizing: border-box;">海康经销</section></section><section class="" style="padding-right: 5px; padding-left: 5px; display: inline-block; color: rgb(255, 255, 255); box-sizing: border-box;"><section style="box-sizing: border-box;">密码恢复or设备解绑</section></section></section></section></section><section class="Powered-by-XIUMI V5" style=" box-sizing: border-box; " powered-by="xiumi.us"><section class="" style=" box-sizing: border-box; "><section class="" style="font-size: 14px; box-sizing: border-box;"><section style="box-sizing: border-box;"> 长按识别左侧二维码，请选择在浏览器中打开，下载海康经销APP，方案选型、解绑服务、恢复密码等尽在其中。</section></section></section></section></section></section></section></section><p><br></p>
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