公开(公告)号：US09641455B2

公开(公告)日：2017-05-02

申请号：US13945125

申请日：2013-07-18

Applicant: International Business Machines Corporation

Inventor： Patricia G. Driever ,  Roger G. Hathorn ,  Henry J. May ,  Christoph Raisch ,  Daniel Sentler

IPC: H04L12/26 ,  H04L12/933 ,  H04L12/931 ,  H04L12/939

CPC classification number: H04L49/15 ,  H04L49/357 ,  H04L49/557

Abstract: Provided are a method, a system, and a computer program product in which a plurality of switches are maintained in a cascaded configuration. A switch relays a switch fabric internal link services (SW-ILS) to generate a pair of exchanges comprising a first exchange and a second exchange at the switch. In response to a termination of the first exchange of the pair of exchanges, the second exchange of the pair of exchanges is terminated.

公开(公告)号：US09130874B2

公开(公告)日：2015-09-08

申请号：US14084729

申请日：2013-11-20

Applicant: International Business Machines Corporation

Inventor： Roger G. Hathorn ,  Henry J. May ,  Daniel Sentler

IPC: H04L12/939 ,  H04L12/931

CPC classification number: H04L41/0668 ,  H04L43/10 ,  H04L49/357 ,  H04L49/557 ,  H04L49/70

Abstract: Techniques are provided for detecting failure of switching elements of a distributed switch configured to forward Fiber Channel over Ethernet (FCoE) frames. Periodic discovery advertisement messages, which include a fabric name fieldm, are transmitted between a controlling Fiber Channel Forwarder (cFCF) and a FCoE data forwarder (FDF). The cFCF determines a FDF has failed out of the switch fabric based on a reserved value in the fabric name field of a received discovery advertisement message, such as a zero or null value, and de-instantiates virtual links with that FDF.

Abstract translation: 提供了用于检测配置为转发以太网光纤通道（FCoE）帧的分布式交换机的交换元件的故障的技术。 在控制光纤通道转发器（cFCF）和FCoE数据转发器（FDF）之间传输包括光纤名称字段的定期发现广告消息。 cFCF基于接收到的发现通告消息（例如零值或空值）的结构名称字段中的保留值，确定FDF已经出现在交换结构之外，并且与该FDF取消实例化虚拟链路。

公开(公告)号：US09774546B2

公开(公告)日：2017-09-26

申请号：US14481625

申请日：2014-09-09

Applicant: International Business Machines Corporation

Inventor： Joachim Fenkes ,  Henry J. May ,  Christoph Raisch ,  Stefan Roscher ,  Alexander Schmidt ,  Daniel Sentler

IPC: H04L12/947 ,  H04L12/741 ,  H04L12/931 ,  H04L12/64

CPC classification number: H04L49/25 ,  H04L12/6418 ,  H04L45/745 ,  H04L49/351

Abstract: Method to perform an operation comprising, receiving a login request from an endpoint connected to first physical port of a first switch module of a distributed network switch, wherein the distributed network switch comprises a plurality of switch modules, wherein each switch module comprises a plurality of ASICs, responsive to the login request, storing, in a FCDF database, an entry comprising an identifier of the first physical port and a unique identifier of the endpoint, and responsive to receiving, from a cFCF, a zoning update comprising the unique identifier of the endpoint and an FCID for the endpoint, storing the FCID in the FCDF database entry for the endpoint, identifying a first ASIC, of the plurality of ASICs of the first switch module, connected to the first physical port, and updating a zoning table of the first ASIC to include the zoning update.

公开(公告)号：US09515964B2

公开(公告)日：2016-12-06

申请号：US14276581

申请日：2014-05-13

Applicant: International Business Machines Corporation

Inventor： Henry J. May ,  Christoph Raisch ,  Stefan Roscher ,  Daniel Sentler ,  Bharath B. Somayaji ,  Sudheer R. Yelanduru

IPC: H04L12/433 ,  H04L12/931 ,  H04L12/54 ,  H04L12/935 ,  H04L7/00 ,  H04J3/06 ,  H04L12/24 ,  H04L12/939

CPC classification number: H04L49/357 ,  H04J3/0697 ,  H04L7/0016 ,  H04L12/56 ,  H04L41/0668 ,  H04L41/0803 ,  H04L49/3009 ,  H04L49/557

Abstract: Techniques are provided for synchronizing, in a distributed Fiber Channel fabric or a distributed FCoE fabric in which FC frames are encapsulated in Ethernet frames, a controlling FCoE forwarder (cFCF) with the FCoE data-plane forwarder (FDF). The operation includes entering a recovery mode at the FDF. The FDF is modified based on a route distribution message provided by the cFCF which includes fabric-provided MAC addresses (FPMAs). The FDF notifies the cFCF of differences between the FPMAs supplied by the route distribution message with the FPMAs known by the FDF. The FDF leaves the recovery mode and sends an acknowledgement to the cFCF.

公开(公告)号：US20140307741A1

公开(公告)日：2014-10-16

申请号：US13862247

申请日：2013-04-12

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Roger G. Hathorn ,  Henry J. May

IPC: H04L12/717

CPC classification number: H04L45/42 ,  H04L41/00 ,  H04L49/357

Abstract: Provided are a computer program product, system, and method for processing requests for multiple services in a service request. A receiving controller, comprising one of a controlling forwarder or a data forwarder, receives a service request for a service from an originating device node. The receiving controller forwards an internal service request to a processing controller providing response information for the service request. The processing controller comprises a data forwarder when the receiving controller comprises the controlling forwarder or comprises the controlling forwarder when the receiving controller comprises one of the at least one data forwarder. The processing controller processes the internal service request to generate response information requested by the service request and forwards a reply including the response information to the receiving controller, which forwards the response information in a reply to the service request to the originating device node.

Abstract translation: 提供了一种用于在服务请求中处理对多个服务的请求的计算机程序产品，系统和方法。 包括控制转发器或数据转发器之一的接收控制器从始发设备节点接收对服务的服务请求。 接收控制器将内部服务请求转发给提供服务请求的响应信息的处理控制器。 当接收控制器包括至少一个数据转发器中的一个时，处理控制器包括数据转发器，当接收控制器包括控制转发器或包括控制转发器。 处理控制器处理内部服务请求以产生由服务请求请求的响应信息，并将包括响应信息的回复转发给接收控制器，接收控制器将应答信息转发给服务请求到发起设备节点。

公开(公告)号：US20140201338A1

公开(公告)日：2014-07-17

申请号：US13743110

申请日：2013-01-16

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： David R. Engebretsen ,  Henry J. May ,  Paul E. Movall

IPC: H04L12/24

CPC classification number: H04L41/0803 ,  H04L49/357

Abstract: A method includes receiving firmware at a network entity and determining whether the network entity is to operate as a controlling Fiber Channel forwarder based on the firmware.

Abstract translation: 一种方法包括在网络实体处接收固件，并且基于固件来确定网络实体是否作为控制光纤通道转发器进行操作。

公开(公告)号：US10178048B2

公开(公告)日：2019-01-08

申请号：US14219784

申请日：2014-03-19

Applicant: International Business Machines Corporation

Inventor： Henry J. May ,  Christoph Raisch ,  Stefan Roscher ,  Daniel Sentler ,  Bharath B. Somayaji ,  Sudheer R. Yelanduru

IPC: H04L12/933 ,  H04L12/931

Abstract: Techniques are provided for two components in a distributed Fiber Channel Forwarder (FCF) to establish a link between them at a level of operation that is mutually compatible with respect to the various capabilities offered by the two components. A controlling switch in the distributed FCF may simultaneously operate at different levels with different Fiber Channel Data-Plane Forwarders (FDFs), on a per-pair basis. The level of operation is established at the granularity of an individual capability offered by a switching element. When switching elements are upgraded, the switching elements can dynamically switch to higher or lower levels of operation for any or all of the capabilities defined per pair of switching element.

公开(公告)号：US09473397B2

公开(公告)日：2016-10-18

申请号：US14171710

申请日：2014-02-03

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Patricia G. Driever ,  Roger G. Hathorn ,  Henry J. May ,  Daniel Sentler ,  Bharath B. Somayaji ,  Sudheer R. Yelanduru

IPC: H04L12/715 ,  H04L12/54 ,  H04L29/08 ,  H04L12/721

CPC classification number: H04L45/46 ,  H04L45/00 ,  H04L45/44 ,  H04L67/2823

Abstract: Provided are computer program product, system, and method for determining whether a short or long message format is used to communicate zone information in a network. One large zone is implemented for end devices coupled to ports of data forwarders. A first formatted zoning distribution message is generated for the data forwarders identifying the data forwarder and ports on the data forwarders in the one large zone in response to determining that the data forwarder supports the short message format. A second formatted zoning distribution message is generated identifying the data forwarder, the ports on the data forwarders, and additional fields of information on the ports not included in the first formatted zoning distribution message in response to determining that the data forwarder does not support the short message format; and sending the generated first formatted or second formatted zoning distribution message to the data forwarder.

Abstract translation: 提供了用于确定是否使用短消息格式或长消息格式来传送网络中的区域信息的计算机程序产品，系统和方法。 对于耦合到数据转发器端口的终端设备实现一个大区域。 响应于确定数据转发器支持短消息格式，为标识数据转发器的数据转发器和一个大区域中的数据转发器上的端口生成第一格式化的分区分布消息。 生成识别数据转发器，数据转发器上的端口以及未包括在第一格式化分区分发消息中的端口上的另外的信息字段的响应于确定数据转发器不支持短路的第二格式化的分区分布消息 消息格式; 并将生成的第一格式化或第二格式化的分区分发消息发送到数据转发器。

公开(公告)号：US09401873B2

公开(公告)日：2016-07-26

申请号：US14277434

申请日：2014-05-14

Applicant: International Business Machines Corporation

Inventor： Joachim Fenkes ,  Henry J. May ,  Christoph Raisch ,  Stefan Roscher ,  Alexander Schmidt ,  Daniel Sentler

IPC: H04L12/947 ,  H04L12/931 ,  H04L12/64 ,  H04L12/741

CPC classification number: H04L49/25 ,  H04L12/6418 ,  H04L45/745 ,  H04L49/351

Abstract: Systems, methods, and computer program products to perform an operation comprising, receiving a login request from an endpoint connected to first physical port of a first switch module of a distributed network switch, wherein the distributed network switch comprises a plurality of switch modules, wherein each switch module comprises a plurality of ASICs, responsive to the login request, storing, in a FCDF database, an entry comprising an identifier of the first physical port and a unique identifier of the endpoint, and responsive to receiving, from a cFCF, a zoning update comprising the unique identifier of the endpoint and an FCID for the endpoint, storing the FCID in the FCDF database entry for the endpoint, identifying a first ASIC, of the plurality of ASICs of the first switch module, connected to the first physical port, and updating a zoning table of the first ASIC to include the zoning update.

Abstract translation: 用于执行操作的系统，方法和计算机程序产品，包括：从连接到分布式网络交换机的第一交换机模块的第一物理端口的端点接收登录请求，其中所述分布式网络交换机包括多个交换机模块，其中 每个交换机模块包括多个ASIC，响应登录请求，在FCDF数据库中存储包括第一物理端口的标识符和端点的唯一标识符的条目，并且响应于从cFCF接收到 分区更新包括端点的唯一标识符和端点的FCID，将FCID存储在端点的FCDF数据库条目中，识别第一交换机模块的多个ASIC中连接到第一物理端口的第一ASIC 并且更新第一ASIC的分区表以包括分区更新。

公开(公告)号：US09137100B2

公开(公告)日：2015-09-15

申请号：US14091609

申请日：2013-11-27

Applicant: International Business Machines Corporation

Inventor： Roger G. Hathorn ,  Henry J. May ,  Daniel Sentler

IPC: H04L12/24 ,  H04L12/931

CPC classification number: H04L41/0668 ,  H04L43/10 ,  H04L49/357 ,  H04L49/557 ,  H04L49/70

Abstract: Techniques are provided for detecting failure of switching elements of a distributed switch configured to forward Fiber Channel over Ethernet (FCoE) frames. Periodic discovery advertisement messages, which include a fabric name fieldm, are transmitted between a controlling Fiber Channel Forwarder (cFCF) and a FCoE data forwarder (FDF). The cFCF determines a FDF has failed out of the switch fabric based on a reserved value in the fabric name field of a received discovery advertisement message, such as a zero or null value, and de-instantiates virtual links with that FDF.

Abstract translation: 提供了用于检测配置为转发以太网光纤通道（FCoE）帧的分布式交换机的交换元件的故障的技术。 在控制光纤通道转发器（cFCF）和FCoE数据转发器（FDF）之间传输包括光纤名称字段的定期发现广告消息。 cFCF基于接收到的发现通告消息（例如零值或空值）的结构名称字段中的保留值，确定FDF已经出现在交换结构之外，并且与该FDF取消实例化虚拟链路。