Shenzhou.com is the first IPv6 Ready certified

NP programmable hardware has obvious advantages in implementation
As the first enterprise in China to pass the IPv6 Ready certification in the first phase, the core technology of digital China is undoubtedly competitive. For IPv6 Ready certification, Huang Jian said: "The competition in the market is cruel, and user requirements are constantly changing. to be strong, shenzhou.com must have core competitiveness. Over the years, we have been striving to develop independently and continuously seek technical breakthroughs. This IPv6 certification is what we did after DCNOS obtained the software copyright certification protection, A greater technological step. it also announced that the IPv6 journey of Digital China was officially launched, however, the NP-programmable and ASIC forwarding technologies adopted by Shenzhou digital network DCRS-7604/7608 series products in IPv6 implementation will make Shenzhou digital network far ahead of other enterprises in technology."

At present, there are two methods to implement IPv6 technology, including software and hardware upgrades. The hardware platform is mainly divided into ASIC platform and programmable hardware platform (NP, FPGA, etc ). Among them, the advantages of implementing IPv6 through NP and other programmable hardware are obvious. The technical advantages of NP for hardware mainly include convenience of optimization and upgrade, so as to easily add new features. Because the IPv6 network is in its infancy, protocols and features are updated frequently, which requires that IPv6 devices be updated quickly. From another perspective, one purpose of IPv6 design is to facilitate the expansion of the user's application layer. Therefore, NP can design practical private features based on user needs.

To increase the route table capacity, IPv6 uses a 128-bit address. when the capacity of the route table remains unchanged, it needs to be increased to 4 times. The hardware-forwarded routing table in ASIC is stored in the dedicated address space of ASIC, the hardware address tablespace is very limited, which is usually at dozens of K level. Therefore, if the ASIC Platform maintains the same IPv4 address tablespace In the IPv6 environment, the cost will be greatly increased, therefore, the hardware should be designed to save as much private space as possible and increase the route table capacity. In the actual application environment, during the transition period, devices often run in the dual-stack environment, and at the same time face IPv6 and IPv4 route table requirements, therefore, the requirements for the address space will be greater than the current pure IPv4 environment. The IPv6 forwarding of DCRS-7604/7608 series products of digital shenzhou.com not only supports NP cards, but also supports full line speed 10g, line rate IPv6 and MPLS data forwarding.

The option header that supports option header and extension header IPv6 is much stronger than the IP Option of IPv4, and the processing of extension headers is also richer. All forwarding nodes must process the route extension header, hop-by-hop option header, and address option header. The hop-by-hop option and address option are reserved to support special applications (such as security and management). The intermediate node needs to be processed according to certain policies. Currently, RFC2460 does not define mature and meaningful options, and its potential has not yet been realized. Therefore, when you need to use these option headers to meet your special needs or upgrade IPv6, only programmable hardware such as NP can quickly adapt to these changes and upgrade the system.

To improve packet forwarding efficiency, the IPv6 protocol includes a fixed length of the basic packet header without additional header length fields. The forwarding node does not calculate the checksum. It cannot be sharded with the intermediate node. Compared with other hardware platforms, the biggest advantage of the ASIC platform is "hardware" forwarding, which means that data can be quickly forwarded directly through the ASIC hardware table view. In terms of forwarding performance and forwarding latency, the ASIC platform has almost one or more advantages over other platforms in an IPv4 environment. However, with the emergence of IPv6, the overhead of IP packets on other hardware platforms will be greatly reduced, leading to the narrowing of the gap between other platforms and ASIC platforms. However, digital China Network DCRS-7604/7608 series products are based on NP programmable and ASIC chip technology combined with IPv6 implementation technology, but also greatly improve the packet forwarding efficiency in the IPv6 implementation process.

It provides high-quality QoS to ensure all QoS Problems in IPv4, which also exist in IPv6. IPv6 contains a small number of QoS-specific service elements in the IP Base (basic) and Extension (extended) headers, including the Traffic Class) and the corresponding Flow Label ). Due to the simplification of the packet header, the efficiency of QoS processing and implementation will be improved. IPv6 Implementation Techniques Based on NP programmable and ASIC chip technologies, including queue mechanisms, scheduling mechanisms, and the buffer zones and processing policies of these mechanisms, can be effectively implemented to provide high-quality QoS service assurance.

Build core of 10-Gigabit Intelligent Network

Currently, network-based applications are becoming increasingly abundant. For smart backbone core network devices, not only must products be able to integrate with data, voice, video, and other applications, at the same time, it is necessary to provide high performance, high scalability, the highest level of redundancy protection, and meet the user's growing application needs in the future. The Digital China Network DCRS-7604/7608 series 10-ge switches provide high-density 10-ge Ethernet and Gigabit Ethernet ports, the modular software DCNOS and Digital China Network support full line speed 10-ge, line rate IPv6, MPLS, new security protection capabilities and high QoS protection have become the first choice for building intelligent backbone core networks, including enterprise backbone, enterprise data center, high-performance cluster computing, man backbone, and Internet exchange center networks.

High port density DCRS-7604/7608 series 10-Gigabit switches provide up to 1.28Tbps switching capacity and 952Mbps packet forwarding capability. Supports various high-density interface boards to meet the high-density and high-throughput requirements of core-layer devices, while maintaining the line-rate forwarding performance. In addition, the total switching capacity of this series of products is as high as 4.8 Tbps, and its 1440 Mpps system performance (can be upgraded to Mpps) the packet delay of μs is required for 64-byte packet switching. This provides users with the maximum capacity and the fastest group processing capability in any Ethernet Switching platform.

Software and Hardware combined with the DCNOS software platform independently developed by the DCRS-7604/7608 series 10-ge switches, can directly meet the needs of the majority of users for higher software expansion capabilities, security, fault tolerance capabilities and expansion capabilities. In addition, this product also uses hardware implementation that combines NP programmable and ASIC Technology. Through the combination of hardware and software, the DCRS-7604/7608 series 10-ge switch can achieve a highly fault-tolerant structure, to provide users with an excellent 10-ge platform, it provides industry-leading scalability, fault tolerance capability, security protection capability, and scalability.

High Security and high QoS. With the industry's most advanced grouping check engine, CLEAR-Flow Traffic Analysis and 128000 hardware access control lists (ACLs), you can program DCRS-7604/7608 series 10-ge switches, it intelligently identifies malicious attacks, dynamically controls access, and disconnects attackers before they interrupt the network. In addition, policy-based QoS for DCRS-7604/7608 series 10-ge switches can classify businesses according to user-defined standards, with 802.1 p or DiffServ code points for business classification. The DCRS-7604/7608 series 10-ge switches also support more than 10000 separate business queues. The gigabit port supports eight entry queues and eight exit queues, while the 10-Gigabit port supports eight entry queues and 128 exit queues. At the same time, DCRS-7604/7608 series 10-ge switches can also use the standard ACL mechanism of the switch to identify the business, and put the business in any available queue, and each queue supports independent hierarchical Rate Control, scalable schedulers support minimum guaranteed bandwidth, maximum permitted bandwidth, strict priority, cyclic scheduling, or a combination of the above items.

To achieve the current mainstream network application VoIP, DCRS-7604/7608 series 10-ge switches in the processing of sensitive VoIP services, even if the switch encountered a variety of introduced faults, the call quality is still in the "excellent" range. This means that the network administrator can deploy common long talk quality VoIP services with confidence to achieve uninterrupted operations, regardless of network faults, system device faults, or on-site maintenance and replacement. At the same time, DCRS-7604/7608 series 10-ge switches can also be maintained during use without spofs that can be demonstrated by hot swapping management and switching array modules, power management modules, power supplies and fan trays. Failure or replacement of these devices will not cause expensive system interruptions or affect network performance. Other system enhancements such as error correction code memory and Symmetric Multi-processing technology also improve the ability of DCRS-7604/7608 series 10-ge switches to handle unforeseen problems without affecting the network.

Mr. Huang Jian, deputy general manager of shenzhou.com, said: "DCRS-7604/7608 series 10-ge switches have not only obtained IPv6 Ready certification, but also the majority of customers are using this product, this includes cluster computing, Metro Ethernet service providers, financial institutions, manufacturers, and the oil and gas industries. Although some customers are our expected early adopters, we are also very pleased to see that some customers are 'early mainstream 'customers. This confirms the functions of the new technology and the effectiveness of the target market ."

With new voice and data applications, such as CRM (Customer Relationship Management System), ERP (Enterprise Resource Management System), SCM (supply chain management system) video conferencing, remote teaching and multimedia are used in many enterprise networks, Digital China Network DCRS-7604/7608 series 10-ge switches will be widely used in the development trend of application.

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