How routers and switches are connected

Yes, the router has 4 LAN ports, 3 ports are used to connect to 3 computers, 1 port is used to connect to the switch, and the other 5 computers are connected to the switch port.

Simple setup, the router configuration wizard selects the PPPoE and enters the broadband and password, establishes autodialing, and the other defaults.

Then connect the port on the router to the switch.

If you're going to make a small LAN of eight computers, now let's say you're routing to the Internet, and the switch is to the Internet.

Then one of them should not be connected to the Internet. It is recommended to use a route to connect to the Internet, as long as you take an extra line from the switch to connect to the route, pay attention to the IP to change the IP and do not conflict.

For those large companies, there are hundreds of computers, and to connect to the network, it needs to involve the router to connect to the switch, but it is very troublesome to do this, so how to connect the router to the switch? Below we will bring it to youThe router is connected to the switchmethod, I hope it can be helpful to everyone.

How does a router connect to a switch?

Suppose a network is connected to the Internet by means of DSL cablemodem LAN, etc., the Internet connection is shared by the modem or router, and the internal network is connected through a switch to achieve multiple computers to access the Internet. Assuming that the switch has enabled the DHCP function to automatically assign IP addresses, and the IP range is yes, the IP addresses of Ethernet computers A, B, and C are any number between 2 and 255, the same below). Now, if a wireless broadband router is connected to a node, and it is connected to a desktop computer such as D and E with a network cable, and a laptop computer F and G are connected wirelessly, how to set it up to ensure that D, E, F, and G can access the Internet at the same time (D and E are connected with a loss line, and F and G are wireless connections)?

The wiring method of the router to the switch: the cable connected to the switch is connected to the LAN port of the wireless broadband router (note that it is not the WAN port), and the D, E desktop computer is also connected to the LAN port of the wireless router; At this time, the wireless router actually acts like a hub, and the wireless broadband router usually has 1 WAN port, which is used to connect to the Internet interface, and 4 LAN ports, which can be connected to the computer with a network cable.

How to set up a router to a switch:

1. Manually set the IP addresses of computer D and E respectively, network connection - local connection - properties - general - Internet protocol - use the following IP address, IP address: for example), subnet mask: , default gateway:

After setting, click OK to save.

2. The settings of notebook F and G are also similar, the only difference is that we are now configuring a wireless network card, open network connection - wireless network connection (non-local connection) - properties - general - Internet protocol - use the following IP address, IP address: for example) subnet mask: default gateway:

After setting, click OK to save.

The above is how to connect the router to the switch for you? The whole content of the router-to-switch method.

1. Device connection mode. The primary router connects to the broadband Internet access port of the optical modem through the WAN port, assuming that the IP address of the optical modem is and the IP address of the primary router is. Any port of the switch is connected to the LAN port of the main wireless router; Lower-level wireless routers, i.e. Layer 1, Layer 2, and Layer 3 routers, use LAN ports to connect to switches, which is very important and do not use WAN ports.

2. Configuration mode. It mainly involves the setting of the first, second and third layer routers; The configuration of the IP address of the device is mainly to facilitate the management of the router, and it is okay not to configure it. The configured IP needs to be the same as the main router (a network segment, e.g., ,,; Turn off the subordinate routers, i.e., the first, second, and third layer routers turn off the DHCP service, and the primary router (automatically assigns an IP address to the home's network terminal.

3. About the selection of equipment. As the aggregation nodes of the network, the main router and switch should select equipment with better performance. The main router is recommended to use a full Gigabit wireless router, that is, the wired interface, the WAN port and the LAN port should support both the Gigabit switch and the unmanaged Gigabit switch; Gigabit devices are selected for aggregation nodes, which are very convenient for building gigabit LANs and provide higher intranet speeds.