Network limitations in cloud and mobility

recently, IDC researchers said in a forum on the interop show: today's corporate network, mobile traffic surge, plus highly virtualized environment , Exposing the limitations of existing networks has also led to a need for a new era of dynamically scalable networks,

"For corporate networks, cloud and mobility are two major paradigm shifts," said Rohit Mehra, vice president of IDC's network infrastructure. Original The enterprise network is static and reliable and is fully capable of meeting it needs. But today, demand has changed. Because there was a surge in traffic. The

A variety of factors lead to traditional networks increasingly unable to adapt to the needs of enterprises today.

More and more devices (moving)

Mobile traffic is now flooding the company's data centres with flood-like proportions. In the 2010, only 45% of employees brought the equipment they bought to the workplace, and today they are over two-thirds. Individual staff of a person has three or four personal equipment is not new. As a result, IDC predicts that by 2020, 30 billion devices will be networked via wired and wireless internet access. At the same time, users are looking forward to ubiquitous mobile connections.

More and more applications (video)

The amount of video traffic generated by websites like YouTube last year, coupled with the flow of social and collaborative services such as video conferencing, is putting a huge strain on the capacity of the network. The rise of large data and the need for rapid analysis of a large number of different types of data across networks also exert pressure on the network.

On-demand access to more and more (cloud)

The rise of cloud computing, and in particular the various cloud-based resources, has created the expectation that the network will always be connected and available forever. These cloud resources include computing and storage services at the IaaS layer, and various applications in the SaaS layer, such as Salesforce.com. In the data center, the company's enthusiasm for the cloud is getting higher. A survey by IDC found that spending on traditional it accounts for 68% this year, but it is expected to fall to 62% per cent over the next two years. And spending on public-sector clouds, outside private clouds and internal private clouds will increase, all of which require the web to be online forever. The flow of things, or traffic between servers, plus the migration of virtual machines, the increase in the number of tenants in the cloud, has brought pressure on the design of the traditional internal network. Manufacturers are also switching from 10G Ethernet switches to 40G and 100GbE.

All of these issues "expose the limitations of existing networks," says Brad Casemore, IDC's network research manager for data centers. The new technology that helps solve these problems is Sdn.

"SDN is a network approach that can support cloud computing, virtualization, and multi-tenant requirements," Casemore said. "The workload has changed-more and more virtual traffic, making it increasingly demanding for data center flexibility." "But SDN is still in its early stages, with most of the first adopters being cloud service providers and larger internet companies such as Google, Facebook, Yahoo and Rackspace."

Different vendors offer SDN products and services. Some vendors develop SDN switches, routers, and network devices. Other vendors adopt A software approach that allows the network to be virtualized through a central controller.

HP, Dell, IBM, Cisco and Oracle are basically similar in that they support SDN with hardware and software integrated systems that also contain servers, storage, networks, and management control platforms.

Other vendors prefer software solutions that use software systems to control standard or low-cost hardware devices. VMware, Microsoft and IBM are the leaders of this solution (note that IBM is betting on two camps at the same time).

Second, there are a number of vendors to provide high-grade network services, such as security, firewalls, load balancing. Finally, there are emerging businesses that offer professional services, such as those that deploy SDN systems and provide follow-on support.

"Three years ago, we wouldn't even talk about these topics," Mehra said. "And three years from now, we can look back and see how subversive such a concept is." ”

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