公开(公告)号：US20150222530A1

公开(公告)日：2015-08-06

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 ,  H04L29/08 ,  H04L12/54

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：US20150023364A1

公开(公告)日：2015-01-22

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: H04L12/933

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.

Abstract translation: 提供了一种方法，系统和计算机程序产品，其中多个开关保持级联配置。 交换机中继交换机内部链路业务（SW-ILS）以产生包括交换机的第一交换和第二交换的一对交换机。 响应于一对交换的第一次交换的终止，该对交换的第二次交换被终止。

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：US09467389B2

公开(公告)日：2016-10-11

申请号：US14263015

申请日：2014-04-28

Applicant: International Business Machines Corporation

Inventor： Christoph Raisch ,  Stefan Roscher ,  Alexander Schmidt ,  Daniel Sentler

IPC: H04L12/54 ,  H04L12/863 ,  H04L12/46

CPC classification number: H04L47/62 ,  H04L12/462 ,  H04L12/4625 ,  H04L49/351 ,  H04L49/9052 ,  H04L49/9084

Abstract: A switch unit has one frame buffer pool for storing received frames and another frame buffer pool for storing large frames. The frame size in the large frame buffer pool may be optimized to the largest amount of data the switch unit that an FCoE switching is running on can support (i.e., a limitation of zone entries). Should free space be unavailable in the large frame buffer pool, or if a sequence grows bigger than can be supported, the switch unit may still continue to send response frames back to the sender. While the switch unit may store header information of the frame, the switch unit does not store the data of subsequent frames any longer. Once the sequence has been received completely, a rejection message is sent back with an appropriate error or reason code. The rejection message enables the sender to attempt a retransmission or cancel the current request altogether.

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：US10341256B2

公开(公告)日：2019-07-02

申请号：US14251335

申请日：2014-04-11

Applicant: International Business Machines Corporation

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

IPC: H04L12/931 ,  H04L12/933

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：US10050908B2

公开(公告)日：2018-08-14

申请号：US15209905

申请日：2016-07-14

Applicant: International Business Machines Corporation

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

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

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：US09426098B2

公开(公告)日：2016-08-23

申请号：US14264681

申请日：2014-04-29

Applicant: International Business Machines Corporation

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

IPC: H04L29/06 ,  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.

Abstract translation: 提供了技术，用于在FCoE数据平面转发器（FDF）中的分布式光纤通道结构或其中FC帧被封装在以太网帧中的分布式FCoE架构中同步控制FCoE转发器（cFCF）。 操作包括在FDF中进入恢复模式。 基于由包括结构提供的MAC地址（FPMA）的cFCF提供的路由分发消息来修改FDF。 FDF将通过路由分发消息提供的FPMA与FDF已知的FPMA之间的差异通知给cFCF。 FDF离开恢复模式并向cFCF发送确认。