What is a gateway address? Is the gateway address really a router address?

The gateway address is the IP address of the router.

To send information from one network to another, you must go through a "gateway", that is, a gateway. As the name implies, a gateway is a "gateway" for one network to connect to another. Which is a network checkpoint.

The default gateway value is gateway. A gateway is a device that connects a computer to the Internet. The structure of gateway is similar to that of router, but the difference is the interconnection layer. Gateway can be used for wide area network interconnection and local area network interconnection.

Equivalent to the ID number of each of us, each router can only correspond to one gateway address. There is the IP address of the routing machine behind the main route, and that is your gateway address. If you have a rerouted IP address, that's your address.

Extended data:

Gateways are also called gateways and protocol converters. Gateway realizes network interconnection above the network layer, and is the most complex network interconnection equipment, which is only used for interconnection of two networks with different high-level protocols. Gateway can be used for wide area network interconnection and local area network interconnection. Gateway is a computer system or equipment that plays an important role in conversion.

In OSI, there are two kinds of gateways: one is connection-oriented gateway, and the other is connectionless gateway. When there is a certain distance between two subnets, a gateway is often divided into two halves and connected by a link, which is called a semi-gateway.

There are many kinds of gateways according to different classification standards. The gateway in TCP/IP protocol is the most commonly used, and what we usually call "gateway" refers to the gateway under TCP/IP protocol.

Without a router, there would be no TCP/IP communication between the two networks. Even if two networks are connected to the same switch (or hub), the TCP/IP protocol will determine that the hosts in the two networks are in different networks according to the subnet mask (255.255.255.0).

References:

Baidu encyclopedia-gateway