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This article mainly explains "what are the main modes of Router". The explanation in this article is simple and clear, easy to learn and understand. Please follow the ideas of Xiaobian and go deep into it slowly to study and learn "what are the main modes of Router" together.

Gateway [Router Mode]:1. Gateway refers to the communication interface equipment and procedures between different networks, which is an important part of the network connection equipment. It not only has the function of routing, but also can convert between two different protocol sets, so that different networks are interconnected. For example, a Netware local area network can access IBM's SNA network through a gateway, so that PCs using IPX protocol can communicate with IBM hosts on the SNA network. Router refers to such interface devices and programs. 2. Gateways translate protocols between networks that use different network protocols, so gateways are access points for connecting one network to another. Personally, I think, in terms of access point this level, the router is also a gateway; personally, this is also the "default gateway" is not called "default router" reason.3. Although routers are an example of gateways, gateways that do protocol translation are often implemented in software on routers, so gateways are often a feature of routers; because of this, the terms gateway and router are often used interchangeably; but also because of this, and the relationship between "default gateway" and "default router," the terms gateway and router become confusing. In addition, in many cases, firewall and proxy server functions are installed on the devices used as gateways. 4. Gateway is a device that connects networks based on different communication protocols so that files can be transferred between these networks. In addition to transmitting information, gateways convert this information into a form recognized by the protocol used by the receiving network. It is closely related to routers. Bridge mode:1. All network interfaces (including wireless interfaces) of the router are bridged together, disabling NAT and gateway functions. 2. Also known as AP Mode, called wireless AP, the router is equivalent to a wireless network card at this time. 2. To be added... Ap Client:1. For the sake of discussion, assume that there are two wireless routers, R1 and R2, respectively. The WAN port of R1 has Internet connection and works in AP mode. R2 is connected to R1 through wireless module. 2. The wireless port of R2 is the client of R1. At this time, R2 has no AP function. R2 works in routing (layer 3) mode. R1 and R2 belong to different IP network segments. To be exact, they are in different collision domains. AP Client Bridge: 1. The wireless port of R2 is the client of R1. At this time, R2 has no AP function, but R2 works in the bridging (Layer 2) mode, so R1 and R2 can be placed in the same IP network segment. To be exact, they are located in the same collision domain. Repeater(normal repeater): Equivalent to AP client Bridge, but can issue AP, router bridge, two APs in the same network universal Repeater: Equivalent to AP Client, but can send AP, router in Gateway mode, two APs in different segments. Both Repeater and Unreversed Repeater SSIDs can be changed to be the same as or different from the parent AP. WISP: Universal repeaterWDS Mode using wireless PPPOE dialing:1. WDS is the abbreviation of Wireless Distribution System, which refers to the wireless network formed by connecting multiple wireless networks to each other. Simply put, WDS is the use of two (or more) wireless broadband routers/APs connected to each other to extend the wireless signal to a deeper range. 2. The role of WDS is mainly to connect distant wired networks and expand the range of wireless networks. 3. Lazy Mode: (1). In this mode, the peer router must be in Bridge mode or Repeater mode and the MAC address of this router must be filled in 4. Bridge Mode(Repeater Bridge): (1). Similar to Client Bridge, but also able to do AP. Of course, it is on a different network segment and SSID is different from the main AP. Your SSID will not be blocked. (2). in this mode, the peer router must be in Lazy mode or Repeater mode, manually adding the peer MAC to the AP MAC address table or selected by scanning. (3). Also known as "Point to Point," it is used to connect two different local area network, bridging the wireless AP at both ends only with the other end AP communication, do not accept other wireless network equipment connection. For example, the local area network of two buildings of a company should be connected through wired There are difficulties connecting together, which can be solved by wireless bridging. Bridging mode requires filling in the BSSID of the other AP, local The SSID of the AP is masked and is simply an extended form of the SSID in relay mode. 5. Repeater: (1). Similar to Client, but can also be used as AP. (2). In this mode, the peer router can be in Lazy mode, Bridge mode, or single client, manually adding the peer MAC To the AP MAC address table or selected by scanning. (3). Also known as "LAN", its purpose is to expand the coverage of wireless networks by increasing the coverage of a wireless network at the edge. Add wireless AP to expand wireless network coverage. The biggest difference between relay mode and bridge mode is that relay mode In addition to receiving signals from other APs, the AP in the formula also accepts connections from other wireless network devices. Relay mode is also required All that is needed to connect to the AP's BSSID is the native AP as the core, and the other APs are just an extended form of relay. 6. Other concepts: (1). Phy mode(WDS physical layer protocol): ①. CCK : Complementary Code Keying, 802.11b with data loss protection Carrier Sense Multiple Access (CSMA/CA) is used as a path sharing protocol, and CCK (Complementary Keying) is used as a modulation mode in the physical layer. DSSS. -- 802.11b ②. OFDM --802.11g ③. HTMIX--802.11g/n ④. Greenfield--802.11n Thank you for reading, the above is the content of "What are the main modes of Router", after learning this article, I believe that everyone has a deeper understanding of what are the main modes of Router, and the specific use needs to be verified by practice. Here is, Xiaobian will push more articles related to knowledge points for everyone, welcome to pay attention!

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