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1. 发明授权

US07327692B2 System and method for selecting fibre channel switched fabric frame paths 失效
标题翻译：用于选择光纤通道交换矩阵帧路径的系统和方法
公开(公告)号：US07327692B2
公开(公告)日：2008-02-05
申请号：US10317765
申请日：2002-12-12
申请人： Jonathan Wade Ain , Craig Anthony Klein , Robert George Emberty , Peter Connley Lancaster
发明人： Jonathan Wade Ain , Craig Anthony Klein , Robert George Emberty , Peter Connley Lancaster
IPC分类号： H04L12/26 , H04L12/66 , H04L12/56 , H04J3/16 , G06F15/173 , G06F15/16
CPC分类号： H04L43/0882 , H04L25/4908 , H04L29/06 , H04L47/10 , H04L47/11 , H04L47/125 , H04L49/351 , H04L49/357 , H04L67/1097 , H04L67/322 , H04L69/329
摘要： A system and method for measuring data transmission activity through a port of a switch device interconnecting nodes of a storage area network, the port transmitting data as words of predetermined length, one data word indicating idle port activity. The method includes steps of: counting a number of transmitted words received from the port in a first counter device; and, for each word counted, comparing that word with a predetermined word indicating no (idle) port transmission activity. In response to the comparing, a number of matches are counted in a second counter device. In this manner, a ratio of a number of counted matches with a total amount of words counted indicates available bandwidth for transmitting additional data over that link. Preferably, this available bandwidth information is included in a link state record that the switch communicates to other switch devices interconnecting that link. Processing devices at the switches determine a link cost factor, based on the available bandwidth of that link and, in addition, the link speed, the cost factor being used to optimize path selection over links in the network according to a path routing algorithm.
摘要翻译：一种用于通过互连存储区域网络的节点的交换设备的端口来测量数据传输活动的系统和方法，所述端口将数据作为预定长度的字发送，一个数据字表示空闲端口活动。该方法包括以下步骤：对从第一计数器装置中的端口接收的发送字数进行计数; 并且对于所计数的每个字，将该字与表示无（空闲）端口传输活动的预定字进行比较。响应于比较，在第二计数器装置中计数多个匹配。以这种方式，计数匹配次数与计算的总字数的比率表示用于在该链路上发送附加数据的可用带宽。优选地，该可用带宽信息被包括在链路状态记录中，交换机与互连该链路的其他交换设备通信。交换机处理设备基于该链路的可用带宽确定链路成本因子，并且还包括链路速度，成本因素用于根据路径路由算法优化网络中的链路上的路径选择。

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