"Cloud" shortcomings break through the bottleneck

Bottlenecks caused by virtualization

Because cloud computing must provide different users with their own services, when the type of users increased, the related service types will inevitably increase, this time, in order to save computing resources, data center must use http://www.aliyun.com/zixun/aggregation/13883.html "> Virtualization technology."

Virtualization Technology consolidates computing resources, but it also poses some problems. For example, we know that a virtual server can migrate dynamically on a physical server, where the network used to be different, because the virtual server jumps between several physical servers. In previous networks, we might have built load balancers on top of several Web servers, but now, with the application of virtualization technology, the machines that load balancers control may sometimes be Web servers, sometimes FTP servers, and networks can become cluttered with virtualization technology.

Cloud Computing Bottleneck Solution

"Cloud" is a brand-new network structure proposed by Juniper. Simply put, "cloud" is the network of various exchange levels, in each of the computing nodes to establish the most direct one-to-one access, two exchange nodes directly between the connection, not through the third node, all the Exchange nodes are at the same level, Different applications are divided into their own routes by software in these switching nodes (Figure 2). Obviously, "cloud" is to take all the exchange routing nodes as a unified Super switching center, the entire network can be easily divided into a core layer of integration, as long as there is an access interface, the integration of the core layer can be connected to other networks.

The benefit is obvious, first it increases the stability of the entire network, because all nodes achieve a one-to-one direct connection, the "cloud" implements a "fully redundant network", so that no matter where the packet starts and where it goes, it only takes two times to disassemble/package the process, Makes the network delay greatly reduced. At the same time, no matter how a virtual machine migrates on a physical server, there is no need to take into account what has changed in the network, because all network nodes have a one-to-one direct connection, no matter what physical server the virtual machine is running on, no difference for the switching center.

The disadvantage of "cloud"

It can be seen that "cloud" is a new network architecture that solves the bottleneck of computing network. However, there are some areas of this network architecture that need our attention.

The "cloud" structure is now an idea that has not yet been developed. For the structure of "cloud", 51cto.com envisages some problems that could become the drawbacks of "cloud".

At present, there are two main applications of cloud computing, one is the external cloud services provided by the cloud service provider for enterprise-level users, and the other is the internal cloud of the large enterprise building within itself. Although the two kinds of cloud computing are essentially different, they do have a lot in common.