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万兆网线和千兆光纤，哪个更好？有何依据？

光纤,网线,光缆万兆网线和千兆光纤，哪个更好？有何依据？

发布时间：2019-02-08加入收藏来源：互联网点击：

万兆网线和千兆光纤，哪个更好？有何依据？

回答于 2019-09-11 08:43:50

回答于 2019-09-11 08:43:50

首先我们先看看万兆网线及千兆光纤的区别，否则无法定义它俩哪个更好。

首先看看万兆网线：

万兆网线是七类线，它的特征是每对双绞线都带有屏蔽层，是对对屏蔽。

万兆网线的标识如图：

万兆支持千兆 / 万兆以太网

目前国内的话，跑万兆的就是超六类网线了，即CAT6A

1. 标准

万兆网线:指的是七类线,ISO/IEC 11801 7类/F级标准中最新的一种双绞线,主要为了适应万兆位以太网技术的应用和发展。

2. 速度

万兆网线:可以提供至少500MHZ的综合衰减对串扰比和600MHZ的整体带宽,是六类线和超六类线的2倍以上传输。

3. 结构

万兆网线:是一种8芯屏蔽线,每对都有一个屏蔽层(一般为金属箔屏蔽。

4. 使用范围

在公司通讯设备、网络设备（交换机和路由器）机房内，用于通讯设备、网络设备之间通讯联结线及楼层交换机连线，最长不能超过100米。

然后咱们看看千兆光纤：

千兆光纤光纤本身是不分千兆万兆的，因为它只是数据传输的介质，光纤传输的快慢取决于通讯交换机的光模块。

我们生活中所说的千兆万兆光纤，其实说的光膜块（也就是光纤端口）。光纤分为单模光纤和多模光纤。

首先单模光缆是不分千兆还是万兆的，单模布线是千兆速率还是万兆主要取决于它使用的设备，正常情况下单模光缆通过设备的支持，工作在1550μm波长下的光单模光缆可以支持万兆（10Gbps)至少达60公里。

多模光缆。根据传输速率的不同，又分为OM1,OM2,OM3,OM4。其中OM1的光缆纤芯直径为62.5μm，OM2至OM4的纤芯直径均为50μm。其实光纤分为两种，一种是单芯光纤，一种是双芯光纤。我们先从单芯光纤说起。

单芯光纤一般用于单芯光纤的光猫和单芯光收发器。一般家庭里用的都是单芯的光纤光猫。为了进行区分，单芯的光纤使用不同的波长来进行下载和传输。举个例子，如果用1310毫米的波长进行上行数据的传输，那么下行数据的传输波长则为1490毫米。

在传输距离超过100米后，网线一般就很少被使用了，更多的是使用光纤，比起光猫。收发器的单芯光纤一般都是成对使用但比便如此，比起双芯光纤，因为少了一根光纤的缘故，成本上还是便宜了不少。

然后就是双芯光纤。

从字面上来看，双芯光纤就是有两条光纤，一条用于发送，一条用于接收。其他的方面并没有多少差别，也很少与单芯光纤进行对比，因为它们通常使用在不同的领域。但双芯光纤常常被拿来与双绞线进行对比。

此外，企业使用的交换机上，光口是要配合相关部件使用的，相比起双绞线，光纤的接口速度达到了千兆甚至更高，极大方便了连接。

所以，综合上述，如果使用在中心机房，进行网络设备接的联结，万兆网线，千兆双模光纤都可使用，当然网络设备需提供万网端口和千兆光纤模块。现在流行的H3C-5750的交换机及 H3C -8680的路由器，锐捷高端交换机都提供了这两种网络端口，可根据需要进行网络设备的联结。而单模光纤多用于城区，县域等远距离，通过光端猫与光端机之间通信。仅供参考。

下面，我把它翻译成英文

Which is better, 10 gigabit cable or 1 gigabit fiber?

First let's look at the difference between a 10 gigabit cable and a gigabit fiber, otherwise it's impossible to define which is better.

First, look at the 10 gigabit cable:

10 million network cable is seven types of lines, it is characterized by each pair of twisted pair with shielding layer, is a pair of shielding.

The mark of ten million network cable is as follows:

10 gigabit support for gigabit / 10 gigabit Ethernet

At present domestic words, run ten thousand trillion is more than six kinds of network cable, namely CAT6A

Standard 1.

10 gigabit cable: refers to the seven classes of cables, the latest twisted pair in ISO/IEC 11801 class 7 /F, which are mainly used for the application and development of 10 gigabit Ethernet technology.

Speed of 2.

10 gigabit network cable: it can provide at least 500MHZ of integrated attenuation to crosswalk ratio and 600MHZ of overall bandwidth, which is more than twice the transmission of class 6 and superclass 6.

Structure of 3.

10 million network cable: it is a kind of 8-core shielding wire, each pair has a shielding layer (generally foil shielding).

4. Scope of use

In the machine room of the company's communication equipment and network equipment (switches and routers), the communication connection line between the communication equipment and network equipment and the floor switch connection shall not exceed 100 meters.

Then let's look at gigabit fiber:

Gigabit fiber itself is not divided into gigabit, because it is only the medium of data transmission, the speed of fiber transmission depends on the optical module of the communication switch.

What we call gigabit, gigabit fibers in our lives are actually lumps of optical film.Fiber is divided into single-mode fiber and multi-mode fiber.

First of all, single-mode optical cable is not divided into gigabit or 10 gigabit, single-mode wiring is gigabit rate or 10 gigabit mainly depends on the equipment it USES, under normal circumstances, single-mode optical cable through the support of equipment, working at 1550 nm wavelength optical single-mode optical cable can support 10 gigabit (10Gbps) at least 60 km.

Multimode cable.According to the transmission rate, it is divided into OM1,OM2,OM3 and OM4.Among them, the fiber core diameter of OM1 is 62.5 micrometers, and the core diameter of OM2 to OM4 is 50 micrometers.In fact, there are two kinds of fiber, one is single-core fiber, the other is double-core fiber.Let's start with single-core fibers.

Single-core optical fiber is generally used in single-core optical fiber optical cat and single-core optical transceiver.Most homes use single-core fiber optic cats.To differentiate, single-core fibers use different wavelengths for download and transmission.For example, if the uplink data is transmitted at a wavelength of 1310mm, the downlink data is transmitted at a wavelength of 1490mm.

After transmission distances of more than 100 meters, network cables are generally used less, and more often, fiber optics than light cats.The single-core fiber of the transceiver is usually used in pairs, but this is the case because one fiber is less expensive than the dual-core fiber.

And then there's the two-core fiber.

A two-core fiber is literally two fibers, one for sending and one for receiving.Other aspects are not much different and are rarely compared to single-core fibers because they are often used in different fields.But twin-core fibers are often compared to twisted pair wires.

In addition, the switch used by the enterprise, the optical port is to be used with related components, compared with the twisted pair, the interface speed of the optical fiber reached gigabit or higher, greatly facilitate the connection.

Therefore, on the basis of the above, if it is used in the central machine room, it can be used for connection of network equipment, such as ten thousand megabits of network cable and gigabit dual-mode fiber. Of course, the network equipment shall provide ten thousand network ports and gigabit fiber modules.Now the popular h3c-5750 switch and h3c-8680 router, ruijie high-end switches provide these two network ports, according to the need for network equipment connection.The single-mode fiber is mainly used for long-distance communication between the optical terminal and the optical terminal in urban areas and counties.

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