Internet router? Anchor? What s the difference?

There is a difference between a router and a cat for Internet access, first of all, you must use a cat to access the Internet, and you can connect to a router later, or you can directly connect to a computer, that is to say, you don't have to use a router to access the Internet. However, with a router, the network can be diverted from the branch to other computers. The full name of the cat is modem.

A router (also known as a pathfinder) is a computer network device that can transmit data packets through a network to a destination (selecting the transmission path of data), a process called routing. A router is a device that connects two or more separate networks, and routing works at the third layer of the OSI model, the network layer, such as the Internet Protocol (IP) layer.

A modem is a kind of computer hardware, which can translate the digital signals of the computer into pulse signals that can be transmitted along the ordinary ** line, and these pulse signals can be received by another modem at the other end of the line, and translated into a language that the computer can understand. The information in the computer is composed of digital signals composed of "0" and "1", while the transmission on the ** line can only be analog electrical signals. Therefore, when two computers want to transmit data through the first line, a device is needed to be responsible for the conversion of digital to analog.

This digital-to-analog converter is the modem.

ADSL (Asymmetric Digital Subscriber Loop) is a member of the XDSL family. ADSL (Digital Subscriber Line) is a series of transmission technologies with ordinary copper ** wire as the transmission medium, including ordinary DSL, HDSL (SYMMETRICAL DSL), ADSL (asymmetric DSL), VDSL (VERY HIGH BIT RATE DSL), SDSL (SINGLE-WIRE DSL), CDSL (CONSUMER DSL), etc., generally known as X DSL.

A router is a network device that connects multiple networks or network segments, and it can "translate" the data information between different networks or network segments, so that they can "read" each other's data, thus forming a larger network.

There are two typical functions of a router, namely the data channel function and the control function. The data channel functions include ** decision, backplane ** and output link scheduling, etc., which are generally completed by specific hardware; Control functions are generally implemented by software, including information exchange with neighboring routers, system configuration, system management, etc.

Hehe, cats are directly used to dial out the Internet, and can only be connected to one terminal (that is, a computer).

Using a router is to solve the problem of multiple computers surfing the Internet, and you must use a cat!

The router and the cat are irreplaceable with each other.

To put it simply: the cat converts the electrical impulses on the line into digital impulses that can be recognized by the computer (network card).

Routers, on the other hand, have digital signals, which allow multiple computers to access the Internet through a single wire.

For example, there are now 4 computers to access the Internet, and there are 2 options:

First: use a cat, a router. Connect the 4 computers to this router with a line, and then connect the router to the cat with a line, and connect to the Internet with a line through the cat; In this case, only 1 line is required.

Second: only 4 cats. Connect 4 computers to 1 cat with 1 line, one cat corresponds to a computer, and then, each cat can also connect a line, you can also access the Internet; At this time, you have to pull 4 lines to the telecom.

You should understand the role and usage of cats and routers by now, right?

The essential difference between a router and a cat:

1. The router has the function of judging the network address and selecting the IP path, can establish a flexible connection in the multi-network interconnection environment, and can connect various subnets with completely different data packets and media access methods, and the router only accepts the information of the origin server or other routers, which is an interconnection device at the network layer.

2. The cat, also known as the moden, is the modem, which converts the data into a specific signal and then sends it out on the ** line. It is a device that can convert digital signals into analog signals and transmit them on the network, and can also convert the received analog signals into digital signals.

3. The cat (ADSL moden) has at least two ports: one is connected to the ** cable, and the other is connected to the RJ-45 port (network cable), which is used to connect to the external network equipment, that is, the data terminal.

4. The router is used to form a local area network, and the gateway that people often say, that is, the router, is equivalent to a door, and the data wants to go out, it must go through the router to go out, and the router can go through three data exchanges and routes to take the data to the next level.

The cat is a modem, which is used to access the Internet through ** line (including ADSL broadband and ordinary** line Internet access), while the router is used to set up a local area network (including wireless and wired), and can also be used with a cat to achieve a ** line and multiple computers to access the Internet at the same time.

The router is used to divide a network cable into several computers on the device, if you are ** line to the Internet, you need to use a cat, if several computers use a ** line to connect to the Internet then connect to the cat and then connect to the router. If it's broadband, you'll need a switch! The specific self will understand it when you use it!

Cat - professional name: modem - router for digital-to-analog conversion - to implement data routing and **.

Most cats can only plug in 1 network cable, and routers can plug in more than 4 cables.

The differences between this router and the anchor are:

A router is a gateway device used to distribute more than two computers on an intranet. It is a device that connects various local area networks and wide area networks on the Internet, and it automatically selects and sets routes according to the situation of the channel, and transmits signals in the order of the best path.

Cat, which is a necessary product for ADSL dialing, is a modem, which is equivalent to a translator, which translates analog signals into digital signals.

The back of the cat can be connected to the router.

A modem, commonly known as a cat, is used to connect to the Internet.

A router is used to build an intranet and assign IP addresses

Generally, if there are multiple devices to go online, you need to install a router behind the cat! Nowadays, some devices, including mobile phones, require wireless Internet access, which requires the router to have wireless capabilities!

The wireless router is responsible for the transmission function of LAN nat** and wifi signals; The professional name of the cat is modem, which is the modem and demodulation function that completes dialing, that is, the function of converting optical signals or ** pulse signals into network signals that can be recognized by the computer. In terms of appearance, wireless routers have antennas, and the sockets are all RJ45 network interfaces; There is no antenna on the cat's case, moreover, the interface on the rear panel is diverse. As shown below:

Functionally different.

To put it simply, wireless routers mainly do NAT address translation to share broadband. And provide wifi access function.

The cat is actually the homonym of the modem modem, commonly known as the cat, and its main role is to do the conversion between digital signals and analog signals in the line of the first line, and the conversion between optical signals and electrical signals in the optical fiber line.

However, most of the optical modems provided by many broadband operators also have routing functions and even wifi access functions. Therefore, it overlaps with the function of home wireless routers.

The cat is used to dial up the Internet.,It's connected to the ** line.。。 The wireless router is different, and the access is an eight-core cable, which is used at the level below the cat.

**The line can only be connected to the cat, and the Internet is accessed through a broadband connection, and only one computer is generally allowed to access the Internet.

After the cable out of the cat is connected to the wireless router, it can be assigned to several computers to access the Internet.

OK.

Router to router, second router setup, there are two ways (provided that the first router is already set up):

The first method: dynamic IP mode (the first route is the primary route, and the second route is the slave route).

1. Plug in the router and do not connect the LAN port of the main router first, and reset the slave router (restore the factory);

2. Connect the computer from any LAN port of the router to enter the settings page;

3. Set according to the dynamic IP;

4. Then set the SSID, encryption method and password;

5. Save and restart;

6. After setting, connect the network cable from the LAN port of the main router to the WAN port from the router.

The second method: wireless AP mode.

1. Connect the computer to the LAN port of the router first, and change the IP address of the slave router. For example, most router addresses are, we just need to change from router IP address to that;

2. Turn off the DHCP function from the router in the settings;

3. Finally, connect the network cable from the main router to the LAN port of the slave router (any one is fine), note that it cannot be the WAN port.

Whether the router needs to be connected to the modem: Not necessarily, it needs to be connected to the network environment.

If it is a telecommunications and other network: it generally needs to be used with cats.

If it is a network such as Great Wall and Aipu: Generally, you don't need a cat, you can use a router directly.

How to set up a wireless router].

Home Network Environment Cabling]:

1. There is a cat (modem): cat (modem) - router WAN port; The LAN port of the router --- a computer.

2. No modem: network cable --- router WAN port; The LAN port of the router --- a computer.

Computer enters the router]:

1. The computer IP and DNS settings are automatically obtained.

2. Open the browser, enter the general router address in the address bar is this or check the login information on the back of the router) Enter the route - enter the user name and password, (the default is generally admin).

Set Router Dialing]:

1. In the [Setup Wizard], select [PPPoe Dialing] (some are ADSL Dialing), enter the Internet user name and password according to the prompts, and save.

2. In [Network Parameters] --WAN Settings], select [Normal Mode], and select [PPPoe Dialing] in the three options of [Connection]. The next step is to select [Auto Connect], Save, and Exit.

Turn on the router's wireless function].

1. Select Wireless Settings --- Basic Settings.

2. Check [Turn on wireless function] and click Save.

Set wifi password].

1. Wireless Settings - Wireless Security Settings - Select [WPA-PSK WPA2-PSK].

Authentication Type: Automatic.

Encryption algorithm: AES.

The PSK password is the wireless password. Set the required password.

Most of them are connected in the following three ways.

1. Router --- router.

2. The cat --- router.

3. Switches --- routers.

The role of the cat is to convert the ** signal and the network digital signal to and from each other, if your home originally needs a cat to surf the Internet, then your router should be connected to the cat.

If you have a ready-made network port (that is, you can plug it in directly with a network cable), use a router to connect to this network port directly, and then you don't need a cat.

No, I can use it without an anchor at home.