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Core Competence Networking has changed how business is conducted. To increase productivity and better serve customers, new applications and innovations that harness the power of the networked infrastructure are being created and deployed at an ever-increasing pace. To ensure that the networking requirements of current and emerging applications are met, the IETF, the governing body of Internet standards, and other networking experts continue to enrich the core TCP/IP protocol with new technologies. To maintain your competitive advantage in this age of rapid progress, you need a technology partner who is committed to providing you with the latest technologies in a timely manner. Designed for enterprise mission critical deployment, HP-UX 11i networking software is built on a core consisting of the TCP/IP stack and STREAMS software and is engineered to achieve an unprecedented level of reliability and performance, automatically taking advantage of new capabilities in system and networking hardware, seamlessly adapting to changes in the network environment. Continued investments are made to ensure that HP-UX11i networking performs better over more types of physical connections with less need of configuration and management. The latest enhancements include IP over InfiniBand, improved throughput with Linux systems and improved traffic management across geographically dispersed datacenters Meeting your current and emerging networking needsHP-UX networking can gracefully scale up from 1 processor to 256 processors, from gigabytes to tens of gigabytes of memory, from 10 Base T to 4 Gigabit Ethernet, from the classic IPv4 to the next generation IPv6. It gracefully adapts to different networking needs in an enterprise, from noisy low bandwidth wireless environments to high bandwidth high throughput datacenter environments.
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Wireless Network
Wireless networks pose unique challenges to the networking professionals. Performance is degraded considerably by the lower bandwidths in wireless links and the loss of packets caused by a higher error rate due to interference and noise. The movement of the mobile device from one location to another leads to further packet loss. To address these challenges, the HP-UX 11i networking team has been working very closely with our customers on the development and deployment of Wireless TCP technology. Wireless TCP on the HP-UX 11i networking stack is being used extensively, including a customer with over 40 million mobile subscribers accessing the Internet using cell phones. HP-UX 11i has optimized their TCP layer to maximize wireless traffic throughput. Datacenter Network
Enterprises continue to consolidate their IT infrastructure around datacenters to improve operational efficiency. HP-UX 11i provides a comprehensive suite of products to meet the mission-critical networking needs. This includes directory and security, distributed file systems, internet and transport services. In the area of transport, datacenter networks present specific challenges in dealing with heterogeneous operating systems and providing quality of service guarantee to lines of businesses in a consolidated environment. - Windows interoperability
Through the premier partnership with Microsoft, HP-UX continues to lead in interoperability with Windows systems. Early and extensive testing of networking interoperability between Windows and HP-UX enables any potential issues to be identified and corrected before reaching our customers.
- Linux interoperability
The classic TCP protocol adopts a sender centric congestion control where the sender determines the network bandwidth availability and throttles the traffic accordingly. In some Linux systems, however, the burden of congestion control is placed on the receiver. HP-UX gracefully adapts to work effectively with these systems through a number of mechanisms including a Large Initial Slow Start threshold.
- Traffic Segregation
The ability to segregate the network traffic in a consolidated environment is important in meeting the service level agreements of different lines of business. HP-UX 11i networking fully supports Virtual LAN (VLAN) technology, a particularly useful tool for this purpose. It has the added benefit of providing a degree of security isolation between the businesses.
Storage Area Network
Fibre Channel is the predominant interconnect technology deployed in storage area networks today. It is highly reliable and offers great performance. However, in situations where the cost, flexibility and ease of deployment are more important, there are other promising technologies available. Currently, the main contenders are iSCSI and Infiniband both of which are supported by HP-UX networking. - iSCSI
iSCSI has come of age and is beginning to make a significant impact on the storage market particularly in situations where flexibility and cost are more important than absolute performance. The standard compliant HP-UX 11i iSCSI implementation supports also Service Location Protocol (SLP) and Challenge Handshake Authentication Protocol (CHAP) with no special iSCSI configuration needed on network interface cards.
- IP over Infiniband
As Infiniband gains in popularity in storage area networks (SAN), so does the need to provide an IP based interface on these entities to ensure broad connectivity. HP-UX 11i networking supports IP over Infiniband-this allows IP applications to operate seamlessly over an InfiniBand network.
Inter-Datacenter Networking
For improved performance and disaster tolerance, enterprises employ geographically dispersed datacenters. However, bursty traffic across these datacenters, if inappropriately managed, could lead to network congestion. HP-UX incorporates new capability to dynamically determine the bandwidth availability across geographically dispersed datacenter to ensure congestion-free traffic. Award winning CapabilitiesPerformance
Based on a deep understanding of system performance and implemented with an exceptional level of precision, a suite of kernel optimizations enables HP-UX 11i to achieve the best SPECweb and SPECwebSSL results in the industry with a score of 23000 and 9060 respectively. (July 2004) - Bulk transmit
HP-UX networking enables the efficient transmit of large files. Through sendfile a large file can be transmitted in a single system call thus avoiding many overheads. Existing networking services, like FTP, automatically make use of this capability.
- Offload technologies
While networking performance can be enhanced by offloading some processing onto the networking card, it is important to carefully partition the workload to take advantage of the richness of the networking technologies embedded in the algorithms. Network Server Accelerator: The HP-UX 11i Network Server Accelerator for HTTP (NSA HTTP) is a networking feature that improves Web server performance by maintaining an in-kernel cache of recently accessed Web pages.
ReliabilityWith industry leading security technology and integrated fault detection, correction and recovery capabilities, the core provides reliable and trustworthy network communications and services. - Integrated protection
HP-UX networking incorporates capabilities that protect the system from intentional or unintentional network overload or storms... With intelligent sensing technologies, overload condition is quickly determined and acted upon resulting in increased system reliability.
- Efficient Re-transmit
Error handling is an integral part of the TCP’s reliable transport service. Continual improvement in that area through selective acknowledgement provides more accurate data loss information and avoids resend of received packets.
- Shortened Recovery time
To shorten the recovery time after error detection, HP-UX incorporates capabilities to simultaneously transmit new data while re-transmitting loss data, that helps system get back to the pipelined state quicker.
Dynamic optimization
Operations of HP-UX networking can be dynamically fine-tuned through the use of a configuration tool. The changes can be made without loss of connections or system re-start. Furthermore, HP-UX networking stack will automatically and dynamically take advantage of the capabilities of the network interface card. Extensibility
HP-UX networking is designed to be extensible. With a STREAM based implementation, ISVs can integrate new capabilities deep into the networking stack through the well-defined Stream module interface. |
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