G switch leads the rapid development of the exchange industry

Although G switches are not widely used, it is undeniable that the emergence of G switches has greatly increased the speed of switches, and g switches have become the core of the network. Making the right device selection does not mean that network construction is successful. For a Gbps high-speed transmission environment, you still need to do a lot of work in actual deployment. As Li Bo said, "the real application of GB requires not only the production of related equipment, but also the definition of network infrastructure transmission requirements. In many aspects, we must make corresponding changes ."

Gu zengyun believes that most of the current G switch products use 10g bundling technology, so a smooth transition mode should be considered during deployment, the bundling technology should support at least 16 10 Gbit/s of links and have data stream-based load balancing capabilities and flexibility. In addition, because the G switch platform is mostly deployed at the core of the network, the reliability design of related products, the online software upgrade capability ISSU), and the non-interrupt path capability ISSU), MPLS, xslow and other technologies are also crucial.

"Deploying a G switch network is not a simple replacement ." Zhuo Lin believes that "with the optimization of the network structure and system adjustment, deploying a GB network is a gradual upgrade process ." For example, in the campus network, you need to first complete the gigabit network to the desktop to better meet the terminal access needs, and then optimize the network structure, such as three layers to the desktop, narrow the range of layer-2 broadcast domains and eliminate the impact of spanning trees on network reliability. The flattening layer simplifies the overall network structure, which improves the network forwarding performance and facilitates maintenance.

Goergen thinks that the user's concerns are similar to upgrading 1g to 10G network, but the specific options are different. For example, what types of cables are used, a large number of 10 Gigabit Optical fiber cables and copper cables are required for cabling, the structure of the former data center, power supply and cooling problems, and so on. The G switch improves the speed and changes the power supply and cooling requirements of all devices.

Zhao xiaoxuan reminded users that if they find that the port is not running properly when deploying the application, it may be because the backboard is not designed based on a G switch. In addition, in the actual application process, pay attention to the heavy load application to prevent packet loss caused by port congestion, and then the network continuously accepts retransmission packets, which greatly reduces the network throughput and efficiency, eventually, it cannot be loaded. These may be traps that users may encounter when deploying a GB product.

A simple number cannot represent all the elements of a product upgrade. a g switch not only improves the data transmission rate by 10 times faster than 10g, but also improves the core bandwidth by 10 times, more importantly, the resulting functions are greatly enhanced and enriched. Cisco once said that the standards used to measure the next-generation switch platform are not limited to capacity and speed, but also more technical indicators and standards. This not only includes support for IPv6, MPLS, and multimedia services, but also reflects more powerful anti-attack security performance and the development trend of high integration, low energy consumption, and small space.

According to optimistic estimates, the first approval of the G switch product server Nic, switching uplink and switch will be available at the end of this year, the new standard not only provides a single port with a full line speed of 100 Gbps per slot, but also a GB switch port with a compression ratio to help users reduce the cost of a single port.

What else will we see in the foreseeable future? The world's top end users began to actually use the G switch product, a large number of data center users began to use the 40g master node connection, single-core 25g technology mature, 4 × 25g parallel electrical to optical link connection design popular, the increase in PC bus throughput, the reduction of NIC costs, the emergence of multi-board bundling or multi-Chassis cascade technology ...... The G switch will usher in a new era of "wide" network communication, which will continue to surprise us in the next few years.

Joel Goergen of Force10 has been involved in the development of IEEE 802.3ba standards. He said that the draft 2.0 has been reviewed and will soon be released, six physical layer standards are now in the R & D stage. "In the past three years, our development on the 0.1 million m technology has been excited. Many core technologies have been solved, and standardization has gradually matured and improved ." Goergen said, "the market will become more exciting in the next five years. With the improvement of technology, the market will also mature, and the further development of other supporting technologies such as network cards, high-end servers, and core routes will be added, both will make the 0.1 million MB application more inevitable and natural."