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28AWG和24AWG网络跳线哪个好?

更新时间:2026-08-22 17:11:32 | 编辑:浅殇 | 信息来源:互联网

  AWG是什么?AWG是一种区分导线直径的标准,AWG前面的数值表示导线形成最后直径前所要经过的孔的数量,数值越大,导线经过的孔就越多,导线的直径也就越小。24AWG网络跳线是数据中心常用的铜缆类型,但是由于其导线直径过大,已经越来越不能满足高密度布线的需求,28AWG网络跳线则凭着诸多优势受到人们的广泛欢迎。那28AWG和24AWG网络跳线到底哪个好呢?

  24AWG网络跳线 VS 28AWG网络跳线

  从外观上看,24AWG网络跳线和28AWG网络跳线最大的区别是其直径,如下图所示,24AWG五类非屏蔽网络跳线(UTP)的直径约为5.46mm,而28AWG五类非屏蔽网络跳线(UTP)的直径只有3.75mm,24AWG六类和超六类非屏蔽网络跳线(UTP)的直径也比28AWG六类和超六类非屏蔽网络跳线(UTP)小的多,具体如下图:

  28AWG网络跳线的优点

  节省空间

  由于28AWG网络跳线的直径较小,因此其占用的空间要比24AWG网络跳线少得多,下图是一捆24AWG网络跳线和一捆28AWG网络跳线占用空间的对比图:

  此外,用配线架管理同样数量的24AWG和28AWG六类网络跳线时,使用28AWG六类网络跳线可以节省约27%的空间,而节省空间带来的好处有:

  在高密度布线中更易查看端口情况,线缆更易管理,有利于空气流通和设备冷却。

  更适合高密度布线

  常见的电信机房内一般包括两个机架:一个用作水平交叉连接,另一个用来容纳交换机等网络设备。当用24AWG网络跳线进行布线时,我们可能需要在用来进行水平交叉连接的机架上配置9个2U配线架和10个2U水平理线器构成38个机架单元,在用来容纳网络设备的机架则配置2个2U水平理线器1个2U配线架等;而使用28AWG网络跳线进行布线时,我们只需要使用1U配线架和1U理线器就能达到上述效果,这节省了大量的机架单元,能大大提高机架的利用率。

  从上述例子我们可以看出,使用28AWG网络跳线能在有限空间内部署更多线路,而且不会造成线缆拥塞,这有利于布线系统的维护和管理。

  28AWG网络跳线在PoE设备中的应用

  PoE技术在最近几年得到了广泛应用,28AWG网络跳线则能支持最高功率的PoE传输。需要注意的是,在用网络跳线进行PoE设备间的连接时,由于线缆的温度会逐渐升高,因此每捆网线的数量会有一定的限制。使用24AWG网络跳线时,可以96根网线组成一捆;而使用28AWG网络跳线时,由于网线的距离更近,线缆温度更易升高,因此只能24或48根网线组成一捆,802.3af和802.3at标准规定48根28AWG网络跳线可以组成一捆,802.3bt标准则规定24根28AWG网络跳线可以组成一捆。

  总结

  28AWG网络跳线能够在一定程度上满足数据中心高密度布线的需求,而且具有节省空间、便于管理等优点。


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