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    Switch for implementing read only zones in a fibre channel fabric
    1.
    发明授权
    Switch for implementing read only zones in a fibre channel fabric 有权
    切换为在光纤通道结构中实现只读区域

    公开(公告)号：US07277433B2

    公开(公告)日：2007-10-02

    申请号：US10637732

    申请日：2003-08-07

    申请人： Subrata Banerjee ,  Badri Ramaswamy ,  Dinesh G. Dutt

    发明人： Subrata Banerjee ,  Badri Ramaswamy ,  Dinesh G. Dutt

    IPC分类号： H04L12/28

    CPC分类号： H04L49/356 ,  H04L49/254 ,  H04L49/357 ,  H04L67/1097

    摘要： The Switch includes a port configured to receive a command frame when installed in a switching Fabric. The frame identifies a source device and a destination device in the Switching Fabric, a command, and a read/write flag which indicates if the identified source intends to exercise read-only or write access to the destination device. The Switch also includes a processor coupled to the port. The processor is configured to trap the frame and prevent it from reaching the defined destination device in the switching Fabric if both the source and destination devices are in a read-only zone and the flag indicates that the source intends to write to the destination device. In this manner, read-only zones can be implemented in the Switching Fabric.

    摘要翻译： 交换机包括一个配置为在安装在交换矩阵中时接收命令帧的端口。 帧标识切换结构中的源设备和目标设备，命令和读/写标志，其指示所识别的源是否旨在对目标设备执行只读或写访问。 交换机还包括耦合到端口的处理器。 如果源设备和目标设备都在只读区域，并且该标志指示源意图写入目标设备，则处理器被配置为捕获帧并阻止它到达交换结构中的定义的目的地设备。 以这种方式，可以在交换结构中实现只读区域。

    Implementing read-only zones in a switching fabric
    2.
    发明授权
    Implementing read-only zones in a switching fabric 有权
    在交换结构中实现只读区域

    公开(公告)号：US07843916B2

    公开(公告)日：2010-11-30

    申请号：US11844910

    申请日：2007-08-24

    申请人： Subrata Banerjee ,  Badri Ramaswamy ,  Dinesh G. Dutt

    发明人： Subrata Banerjee ,  Badri Ramaswamy ,  Dinesh G. Dutt

    IPC分类号： H04L12/28

    CPC分类号： H04L49/356 ,  H04L49/254 ,  H04L49/357 ,  H04L67/1097

    摘要： The Switch includes a port configured to receive a command frame when installed in a switching Fabric. The frame identifies a source device and a destination device in the Switching Fabric, a command, and a read/write flag which indicates if the identified source intends to exercise read-only or write access to the destination device. The Switch also includes a processor coupled to the port. The processor is configured to trap the frame and prevent it from reaching the defined destination device in the switching Fabric if both the source and destination devices are in a read-only zone and the flag indicates that the source intends to write to the destination device. In this manner, read-only zones can be implemented in the Switching Fabric.

    摘要翻译： 交换机包括一个配置为在安装在交换矩阵中时接收命令帧的端口。 帧标识切换结构中的源设备和目标设备，命令和读/写标志，其指示所识别的源是否旨在对目标设备执行只读或写访问。 交换机还包括耦合到端口的处理器。 如果源设备和目标设备都在只读区域，并且该标志指示源意图写入目标设备，则处理器被配置为捕获帧并阻止它到达交换结构中的定义的目的地设备。 以这种方式，可以在交换结构中实现只读区域。

    Label switching in fibre channel networks
    7.
    发明授权
    Label switching in fibre channel networks 有权
    光纤通道网络中的标签交换

    公开(公告)号：US08462790B2

    公开(公告)日：2013-06-11

    申请号：US12566013

    申请日：2009-09-24

    申请人： Scott S. Lee ,  Dinesh G. Dutt ,  Thomas J. Edsall

    发明人： Scott S. Lee ,  Dinesh G. Dutt ,  Thomas J. Edsall

    IPC分类号： H04L12/56

    CPC分类号： H04L45/50 ,  H04L12/4604 ,  H04L45/00

    摘要： Methods and apparatus are provided for label switched routing in fiber channel networks. Techniques are provided for implementing label switching based on particular characteristics of fiber channel networks. By using label switching, mechanisms such as traffic engineering, security, and tunneling through networks that do not support fiber channel frames can be implemented.

    摘要翻译： 为光纤通道网络中的标签交换路由提供了方法和设备。 提供了基于光纤通道网络的特定特征实现标签切换的技术。 通过使用标签交换，可以实现诸如流量工程，安全性和通过不支持光纤信道帧的网络的隧道等机制。

    Packet Forwarding Using an Approximate Ingress Table and an Exact Egress Table
    8.
    发明申请
    Packet Forwarding Using an Approximate Ingress Table and an Exact Egress Table 审中-公开
    使用近似入口表和精确出口表进行数据包转发

    公开(公告)号：US20130064246A1

    公开(公告)日：2013-03-14

    申请号：US13229894

    申请日：2011-09-12

    申请人： Sarang Dharmapurikar ,  Kit Chiu Chu ,  Mahesh Maddury ,  Dinesh G. Dutt ,  Francisco Matus

    发明人： Sarang Dharmapurikar ,  Kit Chiu Chu ,  Mahesh Maddury ,  Dinesh G. Dutt ,  Francisco Matus

    IPC分类号： H04L12/56

    CPC分类号： H04L45/54 ,  H04L45/7453 ,  H04L49/25 ,  H04L49/30 ,  H04L49/3009 ,  H04L49/351 ,  H04L49/354

    摘要： Techniques are provided for forwarding packets via an intermediate network device. A packet comprising a destination MAC address is received at a first port of a network device having a plurality of bi-directional ports. A second port of the network device to which the packet should be forwarded is identified through the use of at least an approximate ingress table at the first port comprising a plurality of compressed destination MAC addresses each having an associated egress port, and the packet is forwarded to the second port. At the second port, a subsequent network device to which the packet should be forwarded is identified through the use of an exact egress table at the second port including exact destination MAC addresses each associated with a network device connected to the second port, and the packet is forwarded to the subsequent network device.

    摘要翻译： 提供了用于经由中间网络设备转发分组的技术。 在具有多个双向端口的网络设备的第一端口处接收包括目的地MAC地址的分组。 通过至少使用包括多个压缩目的地MAC地址的第一端口的近似入口表来识别分组应转发到的网络设备的第二端口，每个端口具有相关联的出口端口，并且该分组被转发 到第二个港口 在第二端口，通过使用第二端口处的精确出口表来识别分组应转发到的后续网络设备，包括与连接到第二端口的网络设备相关联的确切目的地MAC地址，并且分组 被转发到后续的网络设备。

    Apparatus and methods for controlling a data tapping session in a storage area network
    9.
    发明授权
    Apparatus and methods for controlling a data tapping session in a storage area network 有权
    用于控制存储区域网络中的数据窃取会话的装置和方法

    公开(公告)号：US08239477B2

    公开(公告)日：2012-08-07

    申请号：US11356914

    申请日：2006-02-16

    申请人： Samar Sharma ,  Roy M. D'Cruz ,  Jhaanaki M. Krishnan ,  Prashant Billore ,  Dinesh G. Dutt

    发明人： Samar Sharma ,  Roy M. D'Cruz ,  Jhaanaki M. Krishnan ,  Prashant Billore ,  Dinesh G. Dutt

    IPC分类号： G06F15/167 ,  G06F3/00 ,  G06F7/00

    CPC分类号： G06F3/0659 ,  G06F3/0605 ,  G06F3/065 ,  G06F3/067 ,  G06F11/2069 ,  G06F11/2071

    摘要： Disclosed is a session modification mechanism for altering a data tapping process in a storage area network (SAN). In general, a data tapping mechanism is set up so that an appliance receives SAN data that is tapped from a particular SAN session. That is, the data tapping mechanism provides to a particular appliance a copy of the SAN data that is being written from a particular host to a particular storage device. The session modification mechanism allows the appliance to alter various aspects of the SAN session that is to be (or is being) tapped. Examples of various modification features includes (i) redirecting READ commands initiated by the host to the appliance and not sending such command to the storage device, (ii) redirecting both READ and WRITE commands initiated by the host to the appliance and not sending such commands to the storage device, (iii) halting redirection and thereby causing READ commands initiated by the host to be sent to the storage device and WRITE commands initiated by the host to be mirrored to both the storage device and appliance, (iv) quiescing and unquiescing all data I/O's for the particular storage device and appliance, and (v) stopping and starting the data tapping mechanism.

    摘要翻译： 公开了一种用于改变存储区域网络（SAN）中的数据分接过程的会话修改机制。 通常，建立数据分接机制，使得设备接收从特定SAN会话中抽取的SAN数据。 也就是说，数据分接机制向特定设备提供正在从特定主机写入特定存储设备的SAN数据的副本。 会话修改机制允许设备改变将要（或正在被窃取）的SAN会话的各个方面。 各种修改特征的示例包括（i）将主机发起的READ命令重定向到设备，并且不向存储设备发送这样的命令，（ii）将由主机发起的READ和WRITE命令重定向到设备，并且不发送这样的命令 （iii）停止重定向，从而使由主机发起的READ命令被发送到存储设备，由主机启动的WRITE命令被镜像到存储设备和设备，（iv）停顿和不起作用 用于特定存储设备和设备的所有数据I / O，以及（v）停止和启动数据分接机制。

    Apparatus and method for performing fast fibre channel write operations over relatively high latency networks
    10.
    发明授权
    Apparatus and method for performing fast fibre channel write operations over relatively high latency networks 有权
    用于在相对高延迟的网络上执行快速光纤通道写入操作的装置和方法

    公开(公告)号：US07934023B2

    公开(公告)日：2011-04-26

    申请号：US10726269

    申请日：2003-12-01

    申请人： Murali Basavaiah ,  Satish Ambati ,  Magesh Iyengar ,  Thomas Edsall ,  Dinesh G. Dutt ,  Silvano Gai ,  Varagur V. Chandrasekaran

    发明人： Murali Basavaiah ,  Satish Ambati ,  Magesh Iyengar ,  Thomas Edsall ,  Dinesh G. Dutt ,  Silvano Gai ,  Varagur V. Chandrasekaran

    IPC分类号： G06F3/00

    CPC分类号： G06F3/0659 ,  G06F3/0613 ,  G06F3/0635 ,  G06F3/067 ,  H04L67/1097

    摘要： A method and apparatus to improve the performance of a SCSI write over a high latency network. The apparatus includes a first Switch close to the initiator in a first SAN and a second Switch close to the target in a second SAN. In various embodiments, the two Switches are border switches connecting their respective SANs to a relatively high latency network between the two SANs. In addition, the initiator can be either directly connected or indirectly connected to the first Switch in the first SAN. The target can also be either directly or indirectly connected to the second Switch in the second SAN. During operation, the method includes the first Switch sending Transfer Ready (Xfr_rdy) frame(s) based on buffer availability to the initiating Host in response to a SCSI Write command from the Host directed to the target. The first and second Switches then coordinate with one another by sending Transfer Ready commands to each other independent of the target's knowledge. The second switch buffers the data received from the Host until the target indicates it is ready to receive the data. Since the Switches send frames to the initiating Host independent of the target, the Switches manipulate the OX_ID and RX_ID fields in the Fiber Channel header of the various commands associated with the SCSI Write. The OX_ID and RX_ID fields are manipulated so as to trap the commands and so that the Switches can keep track of the various commands associated with the SCSI write.

    摘要翻译： 一种通过高延迟网络提高SCSI写入性能的方法和装置。 该设备包括靠近第一SAN中的发起者的第一交换机和在第二SAN中靠近目标的第二交换机。 在各种实施例中，两个交换机是将它们各自的SAN连接到两个SAN之间相对较高延迟的网络的边界交换机。 此外，启动器可以直接连接或间接连接到第一个SAN中的第一个交换机。 目标也可以直接或间接地连接到第二个SAN中的第二个交换机。 在操作期间，该方法包括响应于从指向目标的主机的SCSI写入命令，基于发起主机的缓冲区可用性的第一个交换机发送传输就绪（Xfr_rdy）帧。 第一个和第二个交换机然后通过发送传输就绪命令相互协调，独立于目标的知识。 第二个交换机缓存从主机接收的数据，直到目标指示它准备好接收数据。 由于交换机将发送帧发送到独立于目标的发起主机，交换机将处理与SCSI写入相关联的各种命令的光纤通道报头中的OX_ID和RX_ID字段。 操作OX_ID和RX_ID字段以捕获命令，以便交换机可以跟踪与SCSI写入相关联的各种命令。