Router parameter settings cause Internet access failure

I believe that many people do not have a special understanding of vro parameter settings. Next we will analyze the vro parameters in detail, which may cause an online failure.

It is very important to know some knowledge about vro parameter settings. Here we mainly explain the common solutions to the connection failure caused by vro parameter settings, in many cases, when we use multiple computers and broadband (Wireless) routers at home to share the Internet, many parameters are basically not set. Because most of the bandwidth (Wireless) the DHCP auto-assigned address function is enabled by default on the vro. In most cases, you can directly connect to the Broadband Router and set the WAN port dialing method and the corresponding account information and password.

I. cause:

A friend of the author recently bought a new wireless router named D-link. Because he has no knowledge about computers and networks, he asked me to help him build a home-based shared network. It is not difficult to set up a shared network. I have been familiar with it and set up connections and dialing in one breath. However, I found a problem when I was ready to debug and was able to return to my home online, that is, after the vro parameter settings are complete, the client computer cannot access the Internet smoothly. When you open the IE browser to access the site, an error message "Internet Explorer cannot open the search page" appears. Based on my experience, this is obviously a symptom of inability to access the Internet. Why does it mean that shared surfing in the family is aborted? I have only followed the rules to troubleshoot the fault.

Ii. troubleshooting:

First, query the address of the local machine through the command line to obtain the situation, go to "start"-> "run", Enter cmd, and press Enter, in the Command Prompt window that appears, enter ipconfig/All and press enter to query the Network Parameter Details. From the feedback, we know that the IP address on the client is normal, both the gateway and DNS addresses are vro addresses (192.168.0.1 ). After that, I tried to execute ipconfig/release to release the address and use ipconfig/renew to search for DHCP again to obtain the address information. All these operations are smooth, which indicates that the network connection between the client and the router is normal.

Iii. troubleshooting:

Now that we know the key to the failure is the DNS server, we can solve the problem from here. First, go to the vro parameter settings page through the management address and query the "Network Settings" option, here, I found that there is a "Enable DNS relay transfer" parameter in "vro Settings", which was previously configured by the author, and this option is not selected, I personally think the problem should come from the configuration of this parameter.

In order to confirm the author's judgment, we can query the connection status of the router through the "status" tab again and find that pppoe dial-up is successful. The DNS server address is 202.106.195.68, and the secondary DNS server address is 202.106.46.151, go back to the client that cannot access the Internet and choose Start> Run. Enter cmd and press Enter. In the Command Prompt window that opens, enter the NSLookup command, next, use server 202.106.195.68 to change the DNS Server Resolution address. The correct IP address is obtained. It seems that there is no problem with the DNS address obtained by using 202.106.195.68. It works properly. So I returned to the vro parameter settings page, checked the "Enable DNS relay transfer" parameter in "vro Settings", and tried to connect to the network on the client again, all normal problems have been properly solved, and DNS resolution can also be completed smoothly.

Iv. Summary:

This fault is mainly caused by a problem in the vro parameter settings of "Enable DNS relay transfer, in fact, when we select "Enable DNS relay transfer", the client will use the router address for the first step of DNS resolution when going online, this is also why the DNS server address on the client is 192.168.0.1, and the second step is the DNS server address obtained by the router using the dial-up.

When we do not select "Enable DNS relay transfer", DNS resolution will be in place in one step, and the DNS server address obtained by dialing the router will be directly used for domain name resolution, the failure in this article is because the "Enable DNS relay transfer" option is not selected, and the DNS address is set to 192.168.0.1 on the client, because DNS relay transfer is not enabled, therefore, after a DNS resolution request is sent to the 192.168.0.1 vro, you do not know how to forward it. To continue without selecting "Enable DNS relay forwarding", you should change the DNS address of the client machine to the public DNS address obtained by dialing. For example, 202.106.195.68 mentioned in this article, in this way, we can ensure that the client can access the Internet normally. Of course, I suggest that you directly select "Enable DNS relay transfer", which makes it easier and more convenient for our family to share.