Knowledge about WAN port of a Broadband Router and Its Usage

This article mainly introduces the basic concepts and usage of the WAN port of the Broadband Router in detail, and provides the detailed MAC clone function. It will be helpful for you to read this article in detail.

At present, broadband routers and wireless routers are becoming increasingly popular in the household and small and medium-sized enterprise markets, and readers will find that both broadband routers and wireless routers, each of them has four adaptive RJ45 lanports and at least one adaptive RJ45 WAN port. What is the difference between a similar port and a vswitch? What are their features and how to use them? What are their different uses? In this article, we will first take you to understand the knowledge and usage of the WAN port of the Broadband Router.

1. Understand WAN Port

As we all know, LAN ports are LAN ports, WAN ports are WAN ports, and WAN ports are used to connect to the Internet, so they are also called Internet interfaces.

Wide Area Network (WAN) is a cross-region data communication Network, which is often used by telecom operators as an information transmission platform, such as telephone Network and broadband Network. The international Internet is currently the largest WAN, and the WAN micro port on the Broadband Router is the port for communication between your local network and the WAN, it can translate data between different networks or CIDR blocks so that they can read each other's data and form a network shared by the office of a home or a small and medium-sized enterprise.

All broadband routers have at least one 10/100 M Adaptive Ethernet (WAN) interface and can be connected to xDSL/Cable/Ethernet. mainstream products support the Auto MDI/MDIX function.

Unlike the UPLINK ports commonly used on vswitches, the UPLINK port is used to facilitate cascade between two vswitches. It uses the same channel as its adjacent common UTP ports. If you connect a common port of a vswitch to an UPLINK port of another vswitch, you need to use a direct line. If both vswitches use UPLINK ports for connection, you need to use a cross line.

Different WAN ports are independent interfaces. They are mainly used for NAT address translation between WAN and lan. They generally support Auto MDI/MDIX. As you know, MDI is a Medium Dependent Interface, also known as an "upstream Interface". It is an Interface used on a hub or vswitch to connect to another hub or vswitch without requiring a crossover cable. The MDI interface does not cross-transmit or receive lines. It is completed by the conventional interface (MDIX Interface) connected to the terminal workstation. There will always be one or two MDI (not crossover) or MDIX (crossover) interfaces on a device, while Auto (automatic/adaptive) MDI/MDIX ports can save the trouble.

Ii. Single WAN port usage

On the WEB configuration page of a Broadband Router (including a wireless router), you can configure public IP addresses in the WAN port so that other computers can access the Internet through the WAN port. The WAN ports of a Broadband Router generally support dynamic IP, static IP, and PPPoE Internet access methods, as well as their extended Internet access solutions.

When dynamic IP is selected, the router automatically obtains the IP address from the ISP. This solution is suitable for broadband access modes such as ADSL + LAN and FTTX + LAN. When the ISP provides you with all wan ip information, you can select a static IP address, and enter the IP address, subnet mask, gateway, and DNS address (you can enter either or not ), many leased line access methods use this solution.

PPPoE (point-to-point Ethernet connection), represented by ADSL or Cable virtual dialing, is also the mainstream broadband access method, after selecting this solution, you must enter the Internet account and password provided by the ISP. You can also select different connection modes, such as on-demand connection, automatic disconnection wait time, automatic connection, timed connection, and manual connection, based on different needs of the package and subscription.

In addition, many ISPs have launched some new WAN broadband access solutions, such as IEEE802.1X + Dynamic IP, IEEE802.1X + static IP. Taking IEEE802.1X + Dynamic IP as an example, this solution can automatically obtain the IP address from the ISP. However, you must first pass the IEEE802.1X authentication, and the ISP will provide you with the authentication username and password. In this setting, enter the user name and password of the IEEE802.1X authentication provided by the ISP, and click "Log on" to log on to the server for the IEEE802.1X authentication.

Of course, there are also emerging WAN Internet access solutions for L2TP and PPTP. ISP will provide you with the Internet account and password. In specific settings, you must enter the account and password provided by the ISP, and the server IP address or domain name provided by the ISP.

In addition, it should be noted that the MAC address cloning function required by the Broadband Router is also applicable to WAN applications. The default MAC address is the MAC address of the physical interface of the WAN on the vro. However, some ISPs may need to bind the MAC address of a network adapter, you can clone the MAC address of the current management PC to the WAN port in the "MAC address" column to reverse the configuration.