Cloud-triggered IP data Network architecture innovation extends from IDC Network to backbone/metropolitan area Network

The era of information explosion has pushed the communication industry to the eve of the new technology change, and the ubiquitous network has become an important link when the rich resources are presented to people in various ways and terminals.

"Can be clearly realized that the demand for family bandwidth is growing, from the traditional 1M gradually to 10M, 20M speed; In the enterprise customers, electronic office is becoming more and more popular, enterprise-specific network is carrying more and more business, the original Enterprise 10M line has been unable to load, Many enterprise customer requirements tend to be 100M or even 1000M. "China Unicom, a customer manager of enterprises and enterprises, told reporters.

The wealth of the business is bound to trigger the network "speed up", and another greater motivation is that the cloud represents the emergence of a new generation of IT operations model. This "cloud" as the core of the new architecture will drive the traditional data center, IT service mode of fundamental change, it brings not only the network side of the "Speed up", the original backbone network, metropolitan area network and even access network architecture will change.

It is not difficult to see that this wave of new technology will start from the data center network, and will rapidly expand to the IP backbone network and metropolitan access network. Baidu, Taobao, Tencent, Sohu, Sina, Shanda, Century interconnection and other cloud computing leading enterprises have deployed a new generation of data center solutions. Recently, China Telecom has also launched a core switch collection test for cloud computing, which is preparing for the large-scale development of cloud computing.

Reshape the data center traffic model

The essence of this change comes from the physical carrier of the cloud, the data center. As you can see, the core of it transformation brought about by cloud computing occurs in the data center, such as resource sharing, it automation, network virtualization, and so on, which changes the traffic model of traditional data centers.

H3C Operator Solutions Minister Sun Hui told reporters that the current large-scale application of the "cloud desktop" is the cloud business to change the IDC flow model of a typical example.

In the past, employees in the desktop PC traffic, in addition to other users with similar peer-to-peer flow of traffic, most of the vertical flow to the server, such as user PC and Enterprise mail server, Office server, such as the formation of vertical convergence model. However, the essence of the Cloud Desktop is the desktop PC as a thin terminal, only for input and output. All data processing work is transferred to the back-end data center, and a virtual machine runs the business. Originally exists in the local area network vertical flow reduces gradually, the staff PC and the server's interaction basically completes inside the data center, thus also formed many new internal horizontal flow. ”

This change is undoubtedly a challenge to the datacenter. If some small and medium-sized enterprises adopt cloud Desktop, the original flow is not large office business to the background, not enough to the original data center internal network poses a threat, then similar to telecommunications operators such a large number of branches of large enterprises, the involved network management systems, value-added systems, The huge data interaction between the boss System and OA system is absolutely necessary for the operators to re-examine their data center network.

"When building a new generation of data centers, operator demand for cloud business to make network transformation to adapt to the future in the data center, large-scale network traffic impact, and gradually improve the IDC internal network of the surge cache, network virtualization, unified exchange and super million trillion security services, such as a series of capabilities. "Sun Hui said.

Metropolitan area Network tending to "data center"

At the same time, the definition of data center boundaries are also expanding, home gateways, media centers and storage capacity of the fusion terminal is in the family unit, the formation of a "micro" data center. In the future ubiquitous Interworking network, the metropolitan Area Network will gradually center the data.

This trend depends on the network of terminals nowadays, intelligent and cross-border integration of the development characteristics-TV cable can be on demand programs, home Media Center has a strong storage capacity, on the one hand storage network side of the push business, but also can store movies and games, and as a family of various terminals of the unified gateway.

"These home multimedia devices have a feature, is 24 hours online, and a long time to run some peer-to-peer download tasks, in accordance with the nearest principle of peer-to-peer, data traffic will be more between users and users, each family has formed a small data center, we can even think of the pan, The carrier's metropolitan area network will gradually become a network of clouds that converge across numerous small data centers. "H3C Data network Development Minister Zhiang said.

Zhiang also said that with mobile terminals, the gradual popularization of home multimedia terminals, operators of metropolitan area network traffic between the scale and business density will grow rapidly, in the entire metropolitan area network, the business will be much higher than the past. "In the construction of metropolitan Ethernet, large capacity, high-end port density 100G switching platform will become the preferred operator, while the network virtualization technology will be from within the data center, gradually extended to the operator's local area network." ”

"Backbone network" in Backbone network

The backbone of the operator network in this wave of cloud will also be difficult to isolate, Zhiang told reporters, because the traditional data center is usually located in the metropolitan Area Network or some of the backbone network nodes, due to the rise of the cloud data center, in order to ensure high-speed traffic between the data centers interoperability, On the basis of the existing backbone network, it will be possible to split a small backbone network dedicated to the interconnection of data centers, which has been clearly foreseen in many telecommunication projects.

The backbone network, which is mainly designed to achieve high-speed interconnection of data centers in a certain region, is intended to centralize these geographically dispersed IDC to achieve more interactive and synchronized content, which has been proposed by some large internet companies.

Similar to Sina, Baidu and other large internet companies, in the country-wide network nodes have built data centers, in order to form a good user perception, to achieve different geographical storage data synchronization and high-speed interaction, many Internet companies will use the enterprise-line approach, will be located in different data centers of the content interconnected.

At the same time, the use of dedicated line to achieve the requirements of the content interconnection in some large enterprise customers gradually become clear, Shanghai Telecom after years of business exploration, has been in this field has many gains.

According to the introduction, Shanghai Telecom has established a complete coverage of the entire Shanghai urban and suburban areas, carrying the business of enterprise-oriented fine line of CE Ethernet, its users to finance, government, large enterprises and other High-value users, has deployed more than 4,000 high-speed line.

Shanghai Telecom CE line network mainly deployed transparent link-type VPN business, Telecom is responsible for providing transparent transmission channel, the client's IP routing in the operator PE is not visible, by the customer to manage their own routes, division of the interface further clear.

(Responsible editor: Liu Fen)