The gateway is mainly used to connect two different networks. At the same time,The gateway is also able to communicate with hosts on both sides simultaneously.However, the hosts on both sides can not communicate directly, but must go through the gateway to communicate.The gateway works in the application layer.To put it simply, the gateway is to manage the IP of different network segments. When we do VLAN on the switch,You need to make an IP under the default VLAN interface, and this IP is what we call the gateway.

The router LTE 4G is a network layer device that usually sends data in packets.The subinterface of router LTE 4G has the function of dividing the broadcast domain, so when we use the switch as the VLAN,It is necessary to make a three-layer routing on router LTE 4G.And the IP address we set on the router LTE 4G subinterface is the gateway.Of course, in the most commonly used Ethernet, the gateway will be degraded to router LTE 4G.

1. Different concepts

Gateway is also called gateway and protocol converter.Gateway is the most complex network interconnection device, which realizes network interconnection above the network layer.Used only for the interconnection of two networks with different higher-layer protocols. Gateways can be used for both Wan and LAN interconnections.A gateway is a computer system or device that acts as a translator.It is used between two systems with different communication protocols, data formats or languages, or even completely different architectures.The gateway is a translator.Unlike bridges, which simply communicate information, gateways repackage the information they receive to suit the needs of the destination system.Same layer -- application layer.

Router LTE 4G (router) is a device that connects local area networks and wide area networks in the Internet.It will automatically select and set the route according to the channel conditions, and send the signal in the order of the best path.

2. Different functions

The gateway is divided into a transmission gateway and an application gateway, and the main function of the gateway is to serve as a conversion task,It is essentially an IP address from one network to another.

The main functions of router LTE 4G are to connect different networks and transmit information.According to the use, it can be divided into access, enterprise level, backbone level, Terabit, multi-wan and 3G wireless.

The gateway can be a router LTE 4G, a switch, or a PC.Communication within that same network segment doe not require a gateway to be involved,Only when the host is communicating with a device that is not in the local network segment, all data packets need to be sent to the gateway device.And then perform forwarding or route processing through a gateway device.

The router LTE 4G is a network layer system, and the router LTE 4G is generally divided into two categories in the current market.One is single-protocol router LTE 4G, and the other is multi-protocol router LTE 4G.The router LTE 4G can perform data format conversion and become a necessary device for network interconnection between different protocols.