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    • 8. 发明申请
    • INTELLIGENT FAILOVER IN A LOAD-BALANCED NETWORKING ENVIRONMENT
    • 智能故障在负载平衡的网络环境中
    • US20080285552A1
    • 2008-11-20
    • US11750903
    • 2007-05-18
    • Ayaz AbdullaNorman K. ChenAnand RajagopalanAshutosh K. JhaHemamalini ManickavasagamSameer Nanda
    • Ayaz AbdullaNorman K. ChenAnand RajagopalanAshutosh K. JhaHemamalini ManickavasagamSameer Nanda
    • H04L12/56
    • H04L12/40013H04L41/06
    • A hash table in the network device driver maintains data on the traffic characteristics for each network interface (“NIC”) within a computing device. If one of the NICs in the computing device becomes unreliable, the cost function in the hash engine allows the software driver to initiate network traffic redistribution among the remaining reliable NICs in the computing device. Using this hash engine, the software driver is able to intelligently redirect each of the network connections on an unreliable NIC to a reliable NIC within the computing device, in a way that optimizes the distribution of network traffic across the remaining reliable NICs. Alternatively, if a connection is moved from an old NIC to a new NIC, the software driver can detect the moved connection and offload the moved connection to a hardware offload engine on the new NIC. With this approach, issues such as network interface overloading and computing device performance degradation may be more easily avoided when failing over network connections, thereby improving overall system performance relative to prior art techniques.
    • 网络设备驱动器中的散列表维护关于计算设备内的每个网络接口(“NIC”)的流量特性的数据。 如果计算设备中的其中一个NIC变得不可靠,则散列引擎中的成本函数允许软件驱动程序在计算设备中剩余的可靠NIC之间发起网络流量再分配。 使用此散列引擎,软件驱动程序可以以优化跨剩余可靠NIC的网络流量分布的方式,将不可靠NIC上的每个网络连接智能地重定向到计算设备内的可靠NIC。 或者,如果连接从旧NIC移动到新NIC,则软件驱动程序可以检测已移动的连接,并将移动的连接卸载到新NIC上的硬件卸载引擎。 利用这种方法,当网络连接失效时,可能更容易地避免网络接口过载和计算设备性能下降等问题,从而相对于现有技术提高整体系统性能。
    • 10. 发明授权
    • Intelligent load balancing and failover of network traffic
    • 网络流量的智能负载平衡和故障转移
    • US08300647B2
    • 2012-10-30
    • US11750987
    • 2007-05-18
    • Ayaz AbdullaNorman K. ChenAnand RajagopalanAshutosh K. JhaHemamalini ManickavasagamSameer Nanda
    • Ayaz AbdullaNorman K. ChenAnand RajagopalanAshutosh K. JhaHemamalini ManickavasagamSameer Nanda
    • H04L12/28
    • H04L45/00H04L29/12028H04L29/12443H04L43/0811H04L45/245H04L45/28H04L61/103H04L61/2542
    • A hash engine in a network device driver maintains data on the utilization and error rate for each network interface card (“NIC”) within a local computing device. From this data, the hash engine intelligently selects transmit NICs and receive NICs based on various networking parameters provided from a software driver program. Transmit packets sent from the operating system in a local computing device to a remote computing device are intercepted, modified and redirected to transmit NICs selected by the hash engine for transmission to remote computing devices. Similarly, address resolution protocol (“ARP”) response packets sent by the operating system in response to ARP request packets are intercepted, modified and redirected to receive NICs selected by the hash engine for transmission. By selecting receive NICs and transmit NICs in this fashion, the hash engine is able to intelligently load balance transmit and receive traffic in the local computing device, thereby improving overall network performance relative to prior art techniques.
    • 网络设备驱动程序中的散列引擎维护有关本地计算设备中每个网络接口卡(NIC)的利用率和错误率的数据。 根据该数据,散列引擎基于从软件驱动程序提供的各种网络参数智能地选择发送NIC和接收NIC。 将从本地计算设备中的操作系统发送的数据包发送到远程计算设备被拦截,修改和重定向,以发送由散列引擎选择的NIC以传输到远程计算设备。 类似地,操作系统响应于ARP请求报文发送的地址解析协议(ARP)响应报文被截获,修改并重定向到接收由哈希引擎选择的NIC进行传输。 通过以这种方式选择接收NIC并传输NIC,散列引擎能够智能地负载平衡本地计算设备中的传输和接收流量,从而相对于现有技术提高整体网络性能。