Works LAN port on the router. What is Wan and Lan in the router

The Internet is an indispensable condition for a comfortable existence of absolutely each modern man. Today in the "online" mode you can work, make purchases, communicate with friends and watch TV. Find a person who would not need the Internet is almost impossible. Moreover, more and more people refuse to view stationary TVs in favor of network broadcasts.

For connecting to the Internet, routers or network routers that allow you to use all Wi-Fi benefits are most often applied. However, in connection with this, users quite often have questions: "WAN - What is it? How to configure it? Why is it needed?". Consider these items in detail.

WAN: What is it?

This solution is widely used when connecting routers or routers to the Internet. For proper setting Equipment communication will be high quality and reliable.

Abbreviation itself indicates what is translated as "global computing network". WAN connector is also often called an Ethernet port. It is responsible for connecting to an external computer network.

If you look at the root side of the router, it will be from 3 to 10 connectors. Over several of them there is a lan inscription, and only one signed Internet or WAN. Experienced computerists also call this Uplink port.

However, it is worth understanding not only with the question "WAN - what is it?", And also with what it differs from other connectors. After all, outwardly everyone looks absolutely identical.

Than WAN is different from LAN

As mentioned above, the ports are very similar, so they are easy to confuse them. However, if you stick the Internet cable into the LAN connector, then absolutely nothing will happen. The fact is that this port is designed to create a local network. That is, if there are several computers in one apartment and they must be combined, then the LAN is used. It allows you to access open folders and quickly transfer information from one device to another.

To access directly to the Internet, you need to connect to the global computer network, that is, WAN. Only so you can use all the benefits of online shopping and communicating with friends from any corner of the planet.

Thus, it becomes obvious that these are not interconnected among themselves. The Internet is very often called the largest WAN network. That is why very often on routers is an Internet abbreviation. This helps users do not miss the connector and start using the Internet without any problems.

So, with the question "WAN - What is it?" Understood, now it's time to consider setting up the connection. If you do not want to delve into all the subtleties of the router interface, you can call the Internet provider and ask the consultant to explain the sequence of actions. But in fact, not everything is so difficult, as it may seem at first glance.

Connection

Consider the WAN settings in more detail. First you need to connect a router to the network. To do this, use the usual network cable, which comes with the router. After that you need:

Connect one end of the cable (usually it is blue) to the router (in the LAN connector), and the other to the laptop or network card PC.
Enable devices and wait full download Computer.
Open the window of any Internet browser and enter the IP address of the router in the address bar. To find out how to clarify the model of the router. Also, the desired address is very often indicated on the package with the router. If there is no data anywhere, then you need to look into the guide to the router.
Press the Enter key.
Wait for page download.

After that, you need to perform several more manipulations for connecting the WAN.

Setting in browser

In order to start using the wireless network, you must perform the following steps:

Enter the login and password from the router (most often "admin" and "1234").
Log in device.
Open the WAN menu. If there is no such inscription, then you need to find Setup.
Fill all fields. All necessary data is clarified by the provider, sometimes they can be found in the contract itself.
Specify the type of data transfer L2TP or PPTP.
Come up with a password and name for the router.
Select the type of encryption (optional).
Enter the address of the access point.
Select item "Automatically get the DNS address".

Update parameters

If necessary, the "Firewall" can be activated in the same menu. To do this, it is enough to put a tick in the corresponding paragraph. Next, click the "Save" button and wait until the update is loaded.

After that, you can pull the LAN cable. Better to restart the computer. Now you can connect the Internet cable to the WAN port on the router and find wireless network on the computer. At the next stage, it is enough to enter a password from the router and start using the Internet.

On some routers there are wan miniport ports. They are intended for high-speed Internet. Today, only some providers are provided such a service (for example, Rostelecom).

Today, many users are looking for such information on the Internet: LAN - what is it and why it is necessary? Of course, in the worldwide network you can find a very simple and short definition.

It sounds as follows: LAN is the local network. That's all.

But this decoding does not give absolutely nothing, especially if you have to deal with a novice user.

In fact, this approach to the case only complicates the whole situation. Therefore, we will try to explain what LAN is, simple languageSo that it can even understand the child.

If you still do not understand something, write about it in the comments, we will be happy to answer all your questions. So let's start with a simple theory.

Theoretical page

So, Lan is decrypted as Local Area Network. This is really translated as.

If you say easier, then LAN is a few united computers, and other devices that can connect to the network.

And they are combined with each other or using cables, or with the help. In Figure 1, you can see a rather bright example of a local network.

Fig. 1. Example LAN

As you can see, here the main element of the network is the router, which is connected to the Internet (WAN). Remember this abbreviation, we still talk about it.

In the meantime, we will analyze the scheme shown above. On it, the number of network segments are indicated, and specifically:

3. DVD player connected to the router using a cable. To do this, there are special LAN connectors on the router, which are usually indicated by yellow. In most cases such connector 4.

As we talked above, a LAN connector is used to connect to the router through the cable. We can see it in Figure 3.

Fig. 3. Router - Rear view

As we see, in this model, everything is standard - 4 LAN connector, but there is another one and it is already different in blue.

Actually, this is WAN (remember, we talked about the fact that this concept needs to be remembered?). To more accurately understand what LAN is, you can compare it with this WAN.

By the way: both LAN and WAN are connected through the most ordinary cable with the RJ45 tip, shown in Figure 4. Above, we talked about that, for example, segment number 3 in Figure 1, that is, the DVD player connects to the router with using a cable. This cable is an ordinary twisted pair with RJ45 tips on both sides. That's so simple!

Fig. 4. Tip RJ45

Compare LAN and WAN

Let's start with what WAN is generally. Again, if you just say, it is the Internet. That is, this is the same network, but not local, like LAN, and global.

It includes all devices and millions of local networks. Wan is decrypted as Wide Area Network.

For this network itself, each user can access the resources of another computer or other device that can be connected to the network.

By the way: This information is stored on servers. If you simply say, this is a huge number of large capacity discs, assembled in one large device, which can issue this information.

Fig. 5. Example of the operating server

Differences LAN and WAN:

Dimensions. Typically, the local network covers small areas, such as an apartment, or some kind of industrial premises. But the global network applies throughout the surface of the globe.
Number of users. Of course, much more people can be connected to the global network than to local. There and equipment is used much more powerful, and in general, a lot of people are usually connected. On this and the calculation.
Type of services. On local networks there are own services, such as file access service, printer service and so on, in general, all that is needed for a small network. But in the global network used, for example, the routing service (definition of the route of information on network nodes) and much more, which is necessary for work in large networks.

As for the distance or square, which these two types of networks can cover, then we have already talked about the fact that the global network extends throughout the surface of the globe.

Accordingly, it can work on distant spacecraft if they are connected to any device as part of this network.

So, it is interesting that local networks can also achieve sufficiently large sizes.

To date, such a network has had a device that was located at a distance of 14,000 km from each other. These were space stations and orbital centers.

Although the local network usually covers the same offices, houses, firms or a small group of buildings.

Tasks LAN

Now let's talk about why people generally create these very local networks and why in some cases it is impossible to use global.

So, the goals of creating LANs may be as follows:

Providing access to files only to specific devices. In global networks, there is no full-fledged such possibility, but there are some workarounds. If you want to give the opportunity to use and change files to certain people, for example, employees of your company, the easiest and most reliable way - creating a local network.
Sharing printers, scanners and other similar devices. These same devices can be simply made to the local network and connect all computers to it in the same building. If you do not use LAN, it would be necessary to each computer separately, and this is very impractical and expensive.
The resources of all computers are also used, in particular, memory. Everything is simple - if one employee does not have enough space for storing some information, he can leave it on a computer of his colleague, which is also connected to.

Actually, these are all goals that people pursue when combine devices on local networks. As you can see, everything turned out to be quite simple and simple.

It remains to consider one question - how does the use of LAN look like?

Very simple - the user who is connected to the network, transfers on its computer to the "Network" folder and sees the "Users" folder there.

He comes into it, then selects the desired user (opens it as an ordinary folder) and sees all his shortcuts, folders and other information that it is on his computer.

Fig. 6. Folder "Network" on a computer connected to the local network.

Of course, before this you need to perform a number of manipulations for setting up LAN, and also make sure that all devices are suitable for use on the local network.

But this, as they say, "Already a completely different story."

An even more understanding the above information can be if you look at a learning lesson in the video below.

What is the IP address, mask, host, network address. Basics

Description of the basic principles of addressing in computer networks. Explanation, what is the IP address and from which parts it consists of what is a mask and how to apply it, how to determine the number of hosts.

If you want to know what WAN is, or what is the difference between the LAN WAN, then you went to the address. Now we will try to figure out what kind of technologies, connectors, connections, for which they are needed and what is the difference.

I think that in most cases when someone is looking for information on WAN, then it means the connector on a Wi-Fi router. After all, in almost every instruction on setting up the router, this abbreviation can be found. Everyone writes about connecting some cables in WAN connectors, or LAN. Let's in order:

Wan. (Wide Area Network) is a global computer network. Simply put, this is the Internet. If we talk about the WAN connector, then this is a connector on the router, which connects the cable from the provider. Network cable, in which the router gets access to the Internet.

Almost all routers are a blue connector, and it looks like this:

The photo shows that the connector is even signed. Also, on the router, as a rule there is a WAN connected cable indicator. In normal operation, it should actively flash. And near the indicator itself, the icon is usually painted as a planet.

Now you know what WAN is. Let's still figure it out than it is different from LAN.

What is the difference between the WAN connector from LAN?

Here, everything is very simple. What is LAN?

Lan. Local Area Network) is a local network. Simply put, these are computers that are interconnected at a not very long distance. For example, computers, TVs, mobile deviceswhich are interconnected through the router within the home, or office. This is the local network.

On routers you can usually find 4 LAN connector. They are yellow and look like this:

They serve to connect devices to the local network over a network cable.

Difference WAN from LAN is that WAN is access to the Internet, and LAN is a local network that can be connected to devices that are close to each other.

I think that this is all you need to know about these two symbols. Of course, it is possible to deepen into technical moments, zazable definitions, etc., but it is unlikely that it will be interesting to someone.

If you look at a regular router, then on the rear panel we will see several ports with the signature of LAN and one - with the WAN signature. Externally, all these ports are identical, however, for the functioning of the router, the confusion is unacceptable between them.

Definition

Wan. - Wide Area Network - a global computing network covering and uniting many computer systems around the world.

Lan. - Local Area Network is a local computing network that combines a limited number of computers on a relatively small area.

Comparison

The difference between WAN and LAN is to assign networks. WAN is an external network connecting local network groups and individual computers regardless of their location. Network participants can interact with each other, taking into account the restrictions on the connection technologies (mainly on the data transfer rate). The global Internet network is the most famous, but not the only WAN network today. LAN is a local network, internal, uniting individual computers, network segments and network groups located in close proximity to each other. The interaction between itself is provided with both wired and wireless technologies.

Thus, on routers, the WAN port is designed to connect a cable with an Internet connection, and LAN ports to connect your local devices.

LAN networks can cover up to several kilometers of territory, and the relationship between network sites is provided with high-quality high-bandwidth cables (most often with twisted pairs). The WAN network does not limit the territory, but with their organization use telephone lines that are not characterized by quality and data rate. In addition, WAN can be based on more modern networks Communication. With the organization of LAN, a straight topology is used, with WAN organization - mixed hierarchical.

On the channel level of the OSI model, the LAN and WAN network use different data transfer protocols: for LAN it is Ethernet and 802.11 (usually), for WAN - PPP, HDLC, Frame Relay. In the LAN networks, the communication channel is used by one client, in WAN networks, the communication channel is divided between network clients.

Difference WAN from LAN

WAN - Network Outdoor, Global, LAN - Internal, Local Network.
WAN is not limited to the territory, LAN cannot be a very long extent.
In routers, the WAN port is intended for an Internet connection, LAN - for local devices of the user.
The number of LAN customers is limited.
LAN bandwidth is usually higher, high-quality cables are used for its organization.
LAN uses Ethernet and 802.11, WAN - PPP protocols and others.
In the LAN communication channel is used by one client, in WAN - several.

Two most popular types Networks today are Lan. (Local Area Network) and Wan. (Wide Area Network). These two systems are usually classified on the basis of their coverage area. A few points are given, which distinguish these two networks. As a rule, lAN LAN. exists in the house or in the university town, while global WAN Network There is throughout many office buildings separated by huge distances. Office buildings in the global network may be in different countries or even continents.

For example, headquarters can be in Russia, the regional office can be in the UK and the office can be in Italy. Working in these three buildings - Wide Area Network. , cooperate with each other. Internet may also be considered as WAN, Ethernet It is a classic example of a global network. Let's look at the differences between these two structures.

Differences

The following amenities are available: LAN - WAN.
Speed \u200b\u200b1000 Mbps 150 Mbps
Transmission bandwidth - High - Low
Data Transmission Speed \u200b\u200b- High - Low
Geographic coverage - small - big
Connecting equipment - 10Base-T Cable - rented lines or satellite
Used technologies - Token Ring and Ethernet ATM, Frame Relay, X.25
Transmission errors - a few - Read more
Installation Cost - Low - High
Expenditures on maintenance - less - Read more
Network Topology - Peer to Peer - Client Server Model
Security - safer than WAN is open to threats
Standard - Ethernet T1
The deterioration of the signal - no - yes
Necessary Equipment - Hub, Switch Router, Modem
Expansion using a network card - using Additional router
Range 1 km - up to 10,000 km
Printer sharing - yes, if in the same local network - no

Local network structure

IN lAN LAN The devices are connected to the switch or hub. These common for all devices are stored on servers. If there are several devices that must be added, an additional hub or switch can be added. Local Area Network (LAN) has a higher bandwidth, while faster compared to Wan. . The maximum speed of the local network can be up to 1000 megabits per second. As lAN LAN. faster, it is preferable for sharing Computers on the network. Local networks LAN Easy to install, most computers and laptops are manufactured today with the RJ45 port embedded in the motherboard, which is used to connect to the network. In the case of old cars that do not have this port, individuals must be installed. network cards NIC (Network Interface Card). This map is placed in slot PCI desktop computers and PCMCIA slot in laptop. Starting advantage of use lAN LAN is its ease of exchanging data. Superputeter, if it is connected to the same lAN LAN may even share the printer. The biggest problem faced by firms in the process of connecting computers in lAN LAN - Monitoring traffic for the Internet. If there is too much load only on one computer or on a shared device, it can reduce the data transfer rate in lAN LAN . This can be circumvented by monitoring. lAN LAN Traffic Monitor, whose function includes tracking the use of bandwidth. Based on settings and operation, installation cost lAN LAN It is considered cheaper compared to Wan Setup. .

Wide Area Network.

IN Wan Setup. (Setting up WAN, computers that are present in different places and they are all interconnected. Devices connected to the router are interconnected through the standard T1. This makes it difficult to use wAN.WIDE AREA NETWORK (WAN) global network since it has a lower throughputThereby slowing down the network. Speed Wan. It can reach 150 megabits per second. This means that speed Wan. equals one tenth local network speed. Although Wan. slower, it is widely used to exchange data. The best example is global Internet. Internet data is available on different continents. However, Wan. Cannot use peripheral devices, as well as on a computer in one country, you can not use a printer in another country. To configure the global network, you need a modem and router. In case, in case additional device Must be added to the network, the router must be configured and connected to another on the network. The only goal is to send and receive data from the Internet. Connecting devices in global Network leased lines or satellites are used. while each of the two networks has its advantages and disadvantages, but this is a special factor that helps choose between LAN and WAN SETUP (WAN Setup is the distance). If the places that will be associated far from each other, it makes no sense to consider the setting lAN LAN Despite all its advantages that it can offer is simply not possible.