Inevitable Cisco wireless router configuration problems

If a Cisco Wireless Router is improperly configured, problems such as disconnection and disconnection may occur. It is very important for us to have a deep understanding of the details in Cisco wireless router configuration. Next we will introduce the relevant knowledge in detail.

As we all know, wireless signals are the carriers of data transmission, which means that the stability of wireless networks has a very direct relationship with wireless signals. In fact, to make the wireless router in a very stable state, you must make a series of reasonable settings for the router. in practical applications, after many users buy the wireless router, enter the ADSL information and use it directly. "I use a wireless router to share the Internet. The speed is fast and slow !" "My laptop is only 10 meters away from the wireless router, but my laptop cannot find stable wireless signals !" "I use a wireless router to share the Internet, frequent disconnection and frequent disconnection !"

The above is a fault in the daily use of some wireless router users. What is the cause of these faults? Because of these unreasonable settings, the wireless router is in an unstable state. Below, the author takes TP-LINKWR641G as an example, a comprehensive introduction to the wireless router settings.

How to configure a Cisco Wireless Router

Before configuring a wireless router, you must connect the PC to the wireless router with a network cable. the other end of the network cable must be connected to the LAN port of the wireless router. After the physical connection is installed, you must have two parameters to configure the wireless router. One is the user name and password of the wireless router, and the other is the management IP address of the wireless router. The default Management IP address of the TP-LINKWR641G wireless router is 192.168.1.1, and the user name and password are admin.

To configure a wireless router, the IP address of the PC must be in the same CIDR block as the management IP address of the wireless router. To this end, I changed the IP address of my laptop Nic to 192.168.1.20.. the subnet mask can be used by default, and the gateway does not need to be set. Currently, most wireless routers only support Web page configuration, rather than Telnet and other configuration modes. Enter the management IP address of the wireless router in the browser, and a login interface will pop up on the desktop. after entering the user name and password, we will enter the configuration interface of the wireless router.

After entering the wireless router configuration interface, the system will automatically pop up a "setting wizard ". In the setup wizard, only WAN port settings are provided. We recommend that you ignore the "setting wizard" and directly go to the "Network parameter settings" option.

1. Network parameter settings

In the network parameter settings configured for the Cisco Wireless Router, you must set parameters for the LAN port and WAN port. In practical applications, many users only set the WAN port, and the LAN port settings keep the default status of the wireless router.

In order to keep the wireless router in an efficient and stable working state, in addition to the necessary settings for the wireless router, the necessary security measures should also be taken. The purpose of purchasing a wireless router is to make it easier for you. If a wireless router is a public network access point, other users can share it. In this case, will your network speed be stable? To ensure the security of the wireless router, you must clear the default LAN Settings of the wireless router. The TP-LINKWR641G wireless router, the default LAN port address is 192.168.1.1, in order to prevent others' intrusion, I change the LAN address to 192.168.1.254, subnet mask is not changed. After setting the LAN port address, click "save". A restart dialog box is displayed.

LAN port network parameter settings

Configure the WAN port after configuring the LAN port information. Before configuring the WAN port, you must first determine the access type of your bandwidth, fixed IP address, dynamic IP address, PPPoE virtual dialing, PPTP, L2TP, 802.1X + Dynamic IP address, or 802.1X + static IP. I use a fixed IP address for ADSL Broadband. Therefore, select static IP for the WAN port connection type and enter the IP address, subnet mask, gateway, and DNS server address. Note: Information such as IP addresses, subnet masks, gateways, and DNS servers are provided by broadband carriers. In addition, the ADSL of a fixed IP address also belongs to the static IP connection mode. After configuring the LAN port and WAN port, we need to configure the Wireless Parameters below. When configuring a wireless router, there is no step strictly. I suggest you configure it in the order on the wireless router configuration page.

2. Cisco wireless router configuration and wireless network parameter configuration

The setting of wireless network parameters directly affects the quality of wireless Internet access. On the surface, the wireless parameter settings in a wireless router are nothing more than setting an SSID number. In actual applications, such as channel and wireless encryption, this will not only affect the speed of wireless Internet access, but also affect the security of wireless Internet access. SSID number: SSIDServiceSetIdentifier) can also be written as ESSID, used to distinguish between different networks, can have a maximum of 32 characters, wireless network card set a different SSID can enter different networks, the SSID is usually broadcast by the wireless router. The scanning function provided by WindowsXP allows you to view the SSID in the current region. The SSID number has been configured when the wireless router leaves the factory. To prevent others from sharing the Internet with the wireless router, we recommend that you set a SSID number, change it regularly, and Disable SSID broadcast.

SSID settings

Frequency Band: "Channel" is also called a Channel. wireless signals are used as the data signal transmission Channel for transmitting media. IEEE802.11b/g works in 2.4 ~ 2.4835GHz Chinese standard). These frequencies are divided into 11 or 13 channels. Mobile phone signals, child hosts, and some electromagnetic interference may interfere with wireless signals. This can be solved by adjusting the channel. Therefore, if a channel feels that the network speed is not smooth, you can try to replace other channels. The author's TP-LINKWR641G wireless router frequency band from 1-13, according to their own environment, adjust to the appropriate channel. Generally, the default channel value of the wireless router manufacturer is 6.

Security Settings: Because the wireless network is a relatively open network, as long as there is a signal coverage, enter the correct SSID number to access the Internet, in order to restrict illegal access, all wireless routers have built-in security settings. Many users set complex encryption to improve the security performance of wireless networks. However, the more complicated the encryption mode is, the lower the communication efficiency of wireless networks. If you do not have high requirements for wireless network security, we recommend that you cancel the security settings.

Security Settings for Cisco wireless router configuration

MAC address filtering in Wireless Networks: this setting is used to prevent unauthorized users from accessing the wireless network. You can restrict or allow the PCs of some MAC addresses to access the wireless network according to the settings. In contrast, MAC address filtering is more effective than data encryption, and does not affect the transmission performance of wireless networks. To accurately obtain the MAC address of the PC connected to the wireless router, you can view the MAC address of all the machines connected to the wireless router in "host status. English version (the above options is the author of the TP-LINKWR641G wireless router for the introduction of the instance, the brand is different, the wireless router setting options will be different.

3. DHCP server option settings

DHCP service: in practical applications, many users' wireless router DHCP services are started, so that wireless NICs do not need to set IP addresses, gateways, DNS servers, and other information. According to the working principle of the DHCP service, the client sends a request IP address to the router. During the Internet access, the router and the wireless network interface will frequently communicate with each other due to the IP address renewal, this will undoubtedly affect the communication performance of the wireless network. Therefore, we recommend that you disable the DHCP service.

DHCP service settings

Client list: You can view all active users of the Cisco wireless router configuration through the client list function.
Static Address Allocation: Through the static address allocation function, you can specify an IP address for the PC on the vro side and an IP address based on the MAC address of the NIC on the PC side.

4. Set forwarding rule options

When accessing the Internet through a router, all clients can only use private addresses, which limits some Internet applications. Forwarding rules are designed for Internet applications with special requirements. Next, the author still takes TP-LINKWR641G wireless router as an example to introduce the functions and settings of each option in forwarding rules. Virtual Server: the virtual server defines the ing between the WAN service port and the lan network server. All accesses to the WAN service port will be relocated to the LAN network server specified by the IP address. For example, we need to map our Internet FTP service to a machine with the IP address 192.168.1.246.

Virtual Server Settings

Dmz host: in some special cases, a computer in the LAN must be completely exposed to the WAN for bidirectional communication. In this case, you can set the computer as a DMZ host. In general, this setting is rarely used. The settings of the DMZ host are the same as those of the virtual server. UPnP setting: UPnP universal plug-and-play is a common architecture for peer-to-peer network connections between PCs and network devices, especially in the home network. UPnP is based on Internet standards and technologies such as TCP/IP, HTTP, and XML, so that such devices can automatically connect to and work with each other, so that the network, especially the home network) it is possible for more people. For machines that use wireless routers to access the Internet, when using BT, MSN and some software, you usually need to open some ports. If UPnP is disabled, the download speed of BT will slow down and MSN video chat will not work properly. To ensure the normal operation of Internet applications, you must enable the UPnP settings.

Internet applications using UPnP

It is true that people who know Wireless Networks a little bit will set up wireless routers. However, they will not be proficient. To maintain an efficient and stable Cisco wireless router configuration, you must be proficient in every configuration of the wireless router.

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