How to implement dual servers in the computer room

It is to use the route add command to add your IP range, the IP of China Telecom sets the gateway IP of China Telecom, and Netcom sets the network gateway of Netcom.

There's a lot of information on the web about this, and any configurable router supports this basic static routing.

BGP solution is a little unnecessary for you, only two lines with static routing can be completely done, convenient and cheap without additional expenditure, using BGP to purchase routing equipment that supports BGP mode.

Border Gateway Protocol (BGP) is the routing protocol of the Internet. BGP itself isn't too complex, but those who are new to the field may be unfamiliar with this concept behind autonomous system-based routing. Saying that BGP is the most advanced solution now makes me really feel that technology is regressing......

Add a static route table.

Set the gateway of the IP range of the telecom as the fiber egress of your telco.

The IP address of Netcom is set to the egress of Netcom.

This routing table will be quite long.

Hello landlord. Courteous.

I'm a professional IDC staff, and I'm here to help.

It is recommended that you use the dual-line full-routing technology, which is the most advanced BGP technology in our computer room.

This technology is in high demand in dual-line data centers.

I'm glad to answer for you, if you don't understand anything, welcome to consult me, Lieutenant --- Haiteng Data.

Due to the high latency of China Telecom Unicom mobile mutual access, sometimes there will be inaccessible phenomena, many games, apps, portals will build the server into a dual-line server, dual-line server and how to pay attention to the problem when building.

A simple way to implement the two-wire: dnspod + server-side socket binding domain name.

Let's talk about dnspod settings first:

You need to set the line type separately, and you need to have a default line. Of course, your server needs to have two IPs, one for telecom and one for Netcom:

wwwa default.

wwwa telecommunications.

wwwa Unicom.

Let's talk about the settings in the program:

In the program, it is to listen to the domain name of the liquid head, not to listen to the IP.

Problems to be noted when setting up a dual-line server:

1.By default, China Unicom will take the Unicom line. One of the easy mistakes to make here is:

Telecom takes the telecom line, and Netcom takes the Netcom line, resulting in some users of the mobile user or the education network not knowing which line to open**, unable to resolve the IP, or parsing error.

2.Double-line normal parsing. If the telecom IP is blocked or unusable, then whether the telecom users can access it normally**, the answer is that it can't be accessed.

Because the default IP address is set to access China Unicom, if the telecom IP cannot go, there is no other way to go, and the IP of China Unicom is only set to access China Unicom's users.

3.When there is a problem with a certain line, how not to affect the user's access. This prompts intelligent DNS dual-wire and intelligent DNS load balancing.

4.The server is configured with two network cards, and different IP addresses for China Telecom and Netcom are configured respectively. Configure a routing table on the server so that the server can access different IP addresses of China Telecom and Netcom through different channels.

On the other hand, the user accesses the server through a unique domain name, and when the domain name is resolved, it is realized by implementing the method of returning different server IPs for different IP address requests, and the IP of Netcom is returned when the user requests the domain name, and the IP of the telecom is returned when the telecom user requests the domain name, which is also the so-called intelligent DNS resolution.

Dual-line servers are suitable for portals, large and medium-sized enterprises, information portals, games, and other types of noisy types.

In today's digital age, the Internet is widely used in various fields. For operators, servers are an integral part of operations. Different kinds of servers are available in the market for different business needs. Among them, dual-line servers are favored.

Definition of a two-line server.

A dual-line server, as the name suggests, is a server that has dual network cables. A dual-line server means that a service provider has two different network egress lines on the same server, which are connected to the networks of two different operators. Therefore, when one of the lines goes down, it will automatically switch to the other, ensuring that normal operation can be resumed in the shortest possible time.

Pros of dual-line servers.

Compared to single-line servers, dual-line servers have the following advantages:

Higher network stability.

Faster response times.

A better access experience.

Since the dual-line server can automatically switch to the backup line in the event of a network failure, it can ensure that normal access can be restored in the shortest possible time. As a result, dual-line servers have more stable network performance than single-line servers. At the same time, the dual-line server can connect two different network exits at the same time, and you can choose a higher quality and faster network envy line, providing faster response speed, and while ensuring stability, it can also optimize the access experience.

How to choose a dual-line server.

Visits.

Business needs. Operating budget.

Reputation of service providers.

First of all, you need to select the appropriate configuration based on the number of visits. If the traffic is small, you can choose a server with a lower configuration. Secondly, you need to choose the type of server according to your business needs, such as common shared hosting, dedicated servers, etc.

In addition, you also need to consider the operating budget and choose the right server with the best performance ratio. Finally, it is also necessary to conduct a comprehensive evaluation of the reputation and service attitude of the service provider to ensure that a high-quality dual-line server service provider can be selected.

Summary. A dual-line server is a server with dual network cables, which can provide higher network stability, faster response speed, and better access experience. When choosing a dual-line server, you need to comprehensively consider factors such as the number of visits, business needs, operating budget and reputation of service providers, and choose a dual-line server service provider that suits you.

Single-line refers to the access of the computer room or China Unicom. Either it's telecom line access.

Double-line means that this computer room is made up of telecommunications. Connect two lines at the same time. Because the domestic network is divided into north and south.

The south is dominated by telecommunications. The north is dominated by connectivity. China Telecom and China Unicom are two different operators.

The speed at which they visit each other is relatively slow. In order to meet the access needs of different users across the country. Only then will there be a double-line computer room.

Because the double line is connected by two lines. Therefore, whether it is China Telecom or China Unicom, users can access it relatively quickly.

As the name suggests, multi-line is more than double-line lines, which can include telecommunications, mobile, railcom, Netcom, and education networks. Because multi-line is a multi-line single IP, this access is not as fast as dual-line and dual-IP. Therefore, it is more and more popular with everyone, but the cost is slightly higher than that of single line and double line.

What is a real dual-line computer room.

Due to the interconnection problems between the two major domestic networks (telecommunications and Netcom). As a result, telecom users access Netcom** or Netcom users access Telecom ** very slowly, in order to solve this problem, there are multiple schemes.

A to ** respectively to do telecommunications station Netcom station mirroring: this is actually the user in Telecom and Netcom respectively to rent and host 1 server. The data is the same for both servers. Doing so is costly and very inconvenient to maintain. Data can't be kept in sync in real time.

b CDN (Accelerated): This scheme has a server in Telecom Netcom that caches user data. It can have a certain effect. However, it is only valid for static pages, not dynamic pages.

c Dual-line host. Dual-line hosting is actually a computer room with telecommunications, Netcom, and two lines of access. Set it up through the internal router in the data center. Enable telecom users to access telecom lines. Netcom users access Netcom lines, so that telecom Netcom can be quickly accessed.

d Intelligent Dual-Line Host: The intelligent dual-line host is a further optimization of the dual-line service. The best of the two-line hosting is the dual-IP hosting method.

That is, a server allocates an IP address for telecom and Netcom at the same time, and then allows telecom users to access telecom IP addresses. The IP address of the Netcom user accessing Netcom. This double line works best.

The first Huai God, the information is incomplete. Incomplete signal reception or unstable signal propagation can lead to information loss.

Second, information jamming. Bandwidth limit, or maximum service request response limit.

Third, the computer room environment. The configuration of the computer room environment, such as ventilation conditions, fire conditions, air conditioning, etc., these external factors can also affect the stability of the server.

Fourth, hacking. Hackers are becoming more and more popular, and servers should be equipped with high-performance firewalls and must-have antivirus software.

Fifth, hardware failure. For example, hard disk failure, network card failure, etc. So there must be backups.

Sixth, safety management failures. For example, fire, hardware damage caused by human factors, etc.

Seventh, force majeure factors. For example, war, **, key floods, etc.

The reason is obvious, since the separation of China Telecom Netcom, the two sides have generated an interconnection point, and the bandwidth of this contact point is the key to the mutual access rate of the two parties! So when telecom users access Netcom access**, the speed is very slow, and so are Netcom users.

Well, obviously, when a user accesses a certain site very slowly, he will invest in a similar but relatively fast **, which I think every webmaster does not want to see.

Is there no way to solve this problem? Of course not! Dual-wire access solves this problem very well.

The so-called two-wire access is actually divided into three situations:

1. False double line.

A: High cost One set** to buy 2 spaces.

B: High maintenance cost to update a ** to update the data on the two spaces of telecom and Netcom at the same time.

c: There are some programs that are not applicable Yes, there are some ** programs, which will cause the data to be out of sync, and there will be big problems. For example, if a telecom user uploads a telecom user on a telecom website, the Netcom user cannot see it.

2. Ordinary double line.

It is built on the ** page"Telecom stations" "Netcom station canton"Two connections, but customers will hardly pay attention to such a choice when they visit, or the customer simply does not have the patience to access, and you answer to do ** (opens very slowly) This will cause your customers to be lost.

3. Intelligent double line.

Network-wide routing or dual-line access is a link-layer technology for network access. It means that the data center computer room where the server is located has a variety of network exits such as Netcom and telecommunications at the same time, and the whole network routing technology is set up on the upper switch of the computer room, so that the server can be automatically assigned to the fastest link every time it connects to the external network. As a result, both telecom and Netcom users can access at high speed at the same time.

However, the connection from your computer terminal to the server usually cannot automatically select the link mode, so the speed of your data upload will still be affected by network interconnection problems. But usually we only need a very small number of uploads to make it, and the vast majority of it is to provide web content to the viewer.

In addition to network-wide routing (two-wire access), CDN technology can also achieve fast access to various networks. However, CDN technology will not only encounter slow uploads, but also content caching and synchronization cycle limitations, yes, your content cannot be published in time, and users will always browse relatively lagging information.

Therefore, dual-line access has become the best solution to solve the problem of interconnection. The so-called two-line access is to introduce a separate line connecting the telecommunications network from the core contact point of the country, which eliminates the contact bridge and makes mutual visits simple and fast.

A two-line computer room means that there are two lines, such as a telecommunications line and a network communication line. The single-line computer room has only one line, telecom or Netcom.

The differences between the two are as follows:

1. Double-line computer room is better than single-line computer room;

2. Dual-line computer room, users of telecom and Netcom can access it, and the speed is faster.

Computer room: In the IT industry, the computer room generally refers to telecommunications, Netcom, mobile, double line, electric power and ** or enterprises, etc., where servers are stored, where IT services are provided for users and employees, small tens of square meters, generally placed twenty or thirty cabinets, large tens of thousands of square meters are placed in thousands of cabinets, or even more, various servers and small computers are usually placed in the computer room, such as IBM small computer, HP small computer, Sun small computer, etc., The temperature and humidity of the computer room and the anti-static measures have strict requirements, and non-professional project personnel are generally not allowed to enter, and the servers in the computer room run many services, such as mobile MMS, short messages, call services, etc. The computer room is very important, without the computer room, work and life will be greatly affected, so each computer room must be managed by professionals to ensure the normal operation of the business.

In today's society, the computer room is the Internet data center.

Abbreviated as IDC.