Router connection instance resolution

Router Connection Device

Using ADSL to access the Internet, there are two soho routers connected to each other, both of which are 4, and have been successful at, but currently there are 5, that is to say, the first line after the router comes out is followed by the second line and then the second line. This situation is quite common. Let's take a look at the principle of router connection.

VroConnection principle

In the two router connection methodsVro1 is to provide layer-3 services (physical, data link, and network layer), while vro1 1 is a hub. Vro2 2 provides layer-4 services, that is, it acts as a vswitch. Vro2 2 can be viewed as a hub, that is to say, the five computers in the room are actually under the jurisdiction of vro1 1. The fixed IP address allocated from the router connection cannot be assigned to vro2 2, which is only used as the vswitch at the same time.

Router connection method

Method 1: Start the DHCP service of vro1 1. Then, your room will receive the LANIP address allocated to you by vro1 1, note that your vro2 2 only acts as a vswitch here (you can change it to another vswitch) [recommended method]

Method 2: divide the IP address of vro1 1 into two subnet segments (by setting the subnet mask) your yamh_lqys are composed of 2 subnets, vro2 2 provides functions, and DNS servers use some large companies (we do not recommend using them as DNS servers ).

Connect two Routers

Vro1 IP address 1 is used to dial numbers. From LAN port 1, a line is pulled to LAN port 2. It is inserted into the LAN port of vro1 2 instead of Ethernet port, the IP address range of the host must be the same as the IP address range of the host, and the gateway must be the IP address of the host. No matter what you set, no matter what you set. No matter what you set, NO 2 is equivalent to a switch.

Router connection Summary

In fact, an enterprise-level router is a vswitch without using the WAN port. You can directly use the vswitch cascade.