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公开(公告)号：US09632930B2
公开(公告)日：2017-04-25
申请号：US12716955
申请日：2010-03-03
IPC分类号： G06F15/177 , G06F12/06 , G06F15/173 , H04L12/54
CPC分类号： G06F12/06 , G06F15/173 , H04L12/56
摘要： Certain embodiments of the present disclosure generally relate to allocating a sub-area of Fiber Channel addresses (FCIDs) to a device. A range of addresses may be assigned to the device using a mask address, where the most significant bits represent a mask and the least significant bits represent a sub-range of FCIDs available to be assigned to the device. Therefore, routing information may be stored efficiently in a Ternary Content Addressable Memory (TCAM) by storing a single entry in the TCAM for each sub-area of FCIDs allocated to a device, instead of storing an entry for each FCID. The single entry may indicate the mask address and the width of the mask.
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公开(公告)号：US20110219183A1
公开(公告)日：2011-09-08
申请号：US12716955
申请日：2010-03-03
IPC分类号： G06F15/173 , H04L12/56 , G06F12/06
CPC分类号： G06F12/06 , G06F15/173 , H04L12/56
摘要： Certain embodiments of the present disclosure generally relate to allocating a sub-area of Fibre Channel addresses (FCIDs) to a device. A range of addresses may be assigned to the device using a mask address, where the most significant bits represent a mask and the least significant bits represent a sub-range of FCIDs available to be assigned to the device. Therefore, routing information may be stored efficiently in a Ternary Content Addressable Memory (TCAM) by storing a single entry in the TCAM for each sub-area of FCIDs allocated to a device, instead of storing an entry for each FCID. The single entry may indicate the mask address and the width of the mask.
摘要翻译： 本公开的某些实施例一般涉及将光纤通道地址（FCID）的子区域分配给设备。 可以使用掩码地址向设备分配一系列地址，其中最高有效位表示掩码，最低有效位表示可用于分配给设备的FCID的子范围。 因此，通过为分配给设备的FCID的每个子区域存储TCAM中的单个条目而不是存储每个FCID的条目，可以将路由信息有效地存储在三元内容可寻址存储器（TCAM）中。 单个条目可以指示掩码地址和掩码的宽度。
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公开(公告)号：US08699497B2
公开(公告)日：2014-04-15
申请号：US12911848
申请日：2010-10-26
申请人： Christian Sasso , Ankur Goyal , Siddharth Kasat , Ronak Desai
发明人： Christian Sasso , Ankur Goyal , Siddharth Kasat , Ronak Desai
IPC分类号： H04L12/56
CPC分类号： H04L61/6045 , H04L29/12254 , H04L29/12801 , H04L29/12886 , H04L41/0803 , H04L61/2038 , H04L61/6004
摘要： A Fiber Channel switch is provided for a relative addressing scheme for domain values to avoid losing portions of a Fiber Channel identifier. At a Fiber Channel switch, data is stored that assigns a relative domain field value to a run-time domain. The relative domain field value used for a Fiber Channel identifier is determined for devices connected to the switch based on the run-time domain of the devices and the virtual storage area network in which the devices are active. A Fiber Channel identifier is stored in a memory of the switch that comprises the relative domain field value determined for the device together with area and port values for the device. The relative domain value is either a reserved domain field value for an existing virtual storage area network or any of the regular domain field values for a new virtual storage area network.
摘要翻译： 提供光纤通道交换机用于域值的相对寻址方案，以避免丢失光纤通道标识符的部分。 在光纤通道交换机中，存储将相对域字段值分配给运行时域的数据。 基于设备的运行时域和设备处于活动状态的虚拟存储区域网络，为连接到交换机的设备确定用于光纤通道标识符的相对域字段值。 光纤通道标识符存储在交换机的存储器中，该存储器包括为设备确定的相对域字段值以及该设备的区域和端口值。 相对域值是现有虚拟存储区域网络的保留域字段值或新虚拟存储区域网络的任何常规域字段值。
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公开(公告)号：US20120099855A1
公开(公告)日：2012-04-26
申请号：US12911848
申请日：2010-10-26
申请人： Christian Sasso , Ankur Goyal , Siddharth Kasat , Ronak Desai
发明人： Christian Sasso , Ankur Goyal , Siddharth Kasat , Ronak Desai
IPC分类号： H04B10/08
CPC分类号： H04L61/6045 , H04L29/12254 , H04L29/12801 , H04L29/12886 , H04L41/0803 , H04L61/2038 , H04L61/6004
摘要： A Fibre Channel switch and related methods are provided for a relative addressing scheme for domain values used by the switch to avoid losing other portions of a Fibre Channel identifier if a particular run-time domain becomes invalid. At a Fibre Channel switch, data is stored that assigns a relative domain field value to a run-time domain in one of a plurality of virtual storage area networks. The relative domain field value used for a Fibre Channel identifier is determined for each of a plurality of devices connected to the Fibre Channel switch based on the run-time domain of the respective devices and the virtual storage area network in which the respective devices are active. A Fibre Channel identifier is stored in a memory of the Fibre Channel switch for each of the plurality of devices. The Fibre Channel identifier comprises the relative domain field value determined for the device together with area and port values for the device. The relative domain value is either a reserved domain field value for an existing virtual storage area network or any of the regular domain field values for a new virtual storage area network. The reserved domain field value is a domain field value that is not to be explicitly used in a Fibre Channel network for Fibre Channel identifiers according to the applicable Fibre Channel industry standards.
摘要翻译： 为交换机使用的域值的相对寻址方案提供光纤通道交换机和相关方法，以避免在特定的运行时域失效时丢失光纤通道标识符的其他部分。 在光纤通道交换机处，存储将相对域字段值分配给多个虚拟存储区域网络之一中的运行时域的数据。 用于光纤通道标识符的相对域字段值基于相应设备的运行时域和相应设备处于活动状态的虚拟存储区域网络来确定连接到光纤通道交换机的多个设备中的每一个设备 。 光纤通道标识符存储在多个设备中的每一个的光纤通道交换机的存储器中。 光纤通道标识符包括为设备确定的相对域字段值以及设备的区域和端口值。 相对域值是现有虚拟存储区域网络的保留域字段值或新虚拟存储区域网络的任何常规域字段值。 保留域字段值是根据适用的光纤通道行业标准，不会在光纤通道网络中明确使用的光纤通道标识符的域字段值。
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公开(公告)号：US20110228670A1
公开(公告)日：2011-09-22
申请号：US12661679
申请日：2010-03-22
申请人： Christian Sasso , Hariharan Balasubramanian , Vithal Shirodkar , Ronak Desai , Ankur Goyal , Santosh Rajagopalan
发明人： Christian Sasso , Hariharan Balasubramanian , Vithal Shirodkar , Ronak Desai , Ankur Goyal , Santosh Rajagopalan
IPC分类号： G06F11/00
CPC分类号： H04L45/12 , H04L41/0668 , H04L45/02 , H04L45/22 , H04L45/28 , H04L45/586 , H04L49/357 , H04L49/70
摘要： In one embodiment, a method includes establishing a link between two N_Port Identifier Virtualization (NPIV) switches, the link having a high cost assigned thereto. The NPIV switches are in communication with a plurality of hosts through an N_Port Virtualization (NPV) device. The method further includes receiving at a first of the NPIV switches, an indication of a failure at a second of the NPIV switches, receiving data at the first NPIV switch, the data destined for one of the hosts associated with a domain of the second NPIV switch, and forwarding the data to the NPV device for delivery to the host, wherein a Fibre Channel Identifier (FCID) of the host is the same before and after the failure at the second NPIV switch. An apparatus is also disclosed.
摘要翻译： 在一个实施例中，一种方法包括在两个N_Port标识符虚拟化（NPIV）交换机之间建立链路，该链路具有高成本分配给它。 NPIV交换机通过N_Port虚拟化（NPV）设备与多个主机通信。 该方法还包括在第一NPIV交换机处接收在第一NPIV交换机的第二个NPIV交换机处的故障的指示，在第一NPIV交换机处接收数据，指向与第二NPIV的域相关联的主机之一的数据 切换并将数据转发到NPV设备以传送到主机，其中主机的光纤通道标识符（FCID）在第二NPIV交换机故障之前和之后是相同的。 还公开了一种装置。
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公开(公告)号：US08593943B2
公开(公告)日：2013-11-26
申请号：US12661679
申请日：2010-03-22
申请人： Christian Sasso , Hariharan Balasubramanian , Vithal Shirodkar , Ronak Desai , Ankur Goyal , Santosh Rajagopalan
发明人： Christian Sasso , Hariharan Balasubramanian , Vithal Shirodkar , Ronak Desai , Ankur Goyal , Santosh Rajagopalan
CPC分类号： H04L45/12 , H04L41/0668 , H04L45/02 , H04L45/22 , H04L45/28 , H04L45/586 , H04L49/357 , H04L49/70
摘要： In one embodiment, a method includes establishing a link between two N_Port Identifier Virtualization (NPIV) switches, the link having a high cost assigned thereto. The NPIV switches are in communication with a plurality of hosts through an N_Port Virtualization (NPV) device. The method further includes receiving at a first of the NPIV switches, an indication of a failure at a second of the NPIV switches, receiving data at the first NPIV switch, the data destined for one of the hosts associated with a domain of the second NPIV switch, and forwarding the data to the NPV device for delivery to the host, wherein a Fibre Channel Identifier (FCID) of the host is the same before and after the failure at the second NPIV switch. An apparatus is also disclosed.
摘要翻译： 在一个实施例中，一种方法包括在两个N_Port标识符虚拟化（NPIV）交换机之间建立链路，该链路具有高成本分配给它。 NPIV交换机通过N_Port虚拟化（NPV）设备与多个主机通信。 该方法还包括在第一NPIV交换机处接收在第一NPIV交换机的第二个NPIV交换机处的故障的指示，在第一NPIV交换机处接收数据，指向与第二NPIV的域相关联的主机之一的数据 切换并将数据转发到NPV设备以传送到主机，其中主机的光纤通道标识符（FCID）在第二NPIV交换机故障之前和之后是相同的。 还公开了一种装置。
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公开(公告)号：US08811227B2
公开(公告)日：2014-08-19
申请号：US13176940
申请日：2011-07-06
申请人： Christian Sasso , Siddharth Kasat , Ankur Goyal , Amitkumar Patel , Kishan Kumar Kotari Uppanda
发明人： Christian Sasso , Siddharth Kasat , Ankur Goyal , Amitkumar Patel , Kishan Kumar Kotari Uppanda
CPC分类号： H04L49/357 , H04L49/65
摘要： A Fiber Channel (FC) switch and related methods are provided for merging the FC switch with an existing FC network. During a merge process of a stand-alone switch with an FC network, a first Exchange Fabric Parameters (EFP) frame is sent from the stand-alone switch to an FC switch in the existing FC network. The first EFP frame has an empty domain identifier (ID) list. The stand-alone switch receives a second EFP frame from the FC switch. The second EFP frame contains a domain ID list of domain IDs already in use in the FC network. The stand-alone switch compares the domain ID list in the second EFP frame with a stored list of one or more domain IDs associated with the stand-alone switch to determine if there is a domain ID overlap or conflict. If no conflict is detected, the stand-alone switch merges with the existing network without initiating a Build Fabric phase or a Principal Switch Selection phase that could cause disruption of traffic in the network.
摘要翻译： 提供了光纤通道（FC）交换机和相关方法，用于将FC交换机与现有的FC网络进行合并。 在具有FC网络的独立交换机的合并过程中，第一个Exchange Fabric参数（EFP）帧从独立交换机发送到现有FC网络中的FC交换机。 第一个EFP帧具有空域标识符（ID）列表。 独立交换机从FC交换机接收第二个EFP帧。 第二个EFP帧包含已在FC网络中使用的域ID的域ID列表。 独立交换机将第二EFP帧中的域ID列表与与独立交换机相关联的一个或多个域ID的存储列表进行比较，以确定是否存在域ID重叠或冲突。 如果没有检测到冲突，则独立交换机与现有网络合并，而不会发起可能导致网络流量中断的构建结构阶段或主交换机选择阶段。
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公开(公告)号：US09131014B2
公开(公告)日：2015-09-08
申请号：US13589333
申请日：2012-08-20
CPC分类号： H04L69/40 , H04L12/4641
摘要： In Service Software Upgrade (ISSU) permits administrators to upgrade the control plane software of a network device without any disruption to the traffic passing through the data plane of the network device. However, because the control plane is unavailable, the network device is unable to transmit periodic messages to re-subscribe to specific VLANs. This may result in a service outage in end devices that rely on the network device to receive data assigned to those VLANs. To prevent the network device from being unsubscribed from the VLANs while the control plane is unavailable, the network device may transmit a control plane message before starting ISSU. Once a neighboring network device receives the message, the neighboring device delays unsubscribing the network device until the control plane is again available. Thus, the network device may perform ISSU without the possibility of data traffic not reaching end devices.
摘要翻译： 在服务软件升级（ISSU）中，管理员可以升级网络设备的控制平面软件，而不会对通过网络设备数据平面的流量造成任何干扰。 然而，由于控制平面不可用，网络设备无法传输周期性消息以重新订阅特定的VLAN。 这可能导致依赖于网络设备的终端设备中的服务中断来接收分配给这些VLAN的数据。 为了防止网络设备在控制平面不可用时从VLAN中取消订阅，网络设备可以在开始ISSU之前发送控制平面消息。 一旦相邻网络设备接收到消息，相邻设备会延迟取消订阅网络设备，直到控制平面再次可用。 因此，网络设备可以执行ISSU而没有数据业务没有到达终端设备的可能性。
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公开(公告)号：US08830871B2
公开(公告)日：2014-09-09
申请号：US13396831
申请日：2012-02-15
申请人： Christian Sasso , Siddharth Kasat , Ankur Goyal , Amitkumar Patel , Kishan Kumar Kotari Uppunda
发明人： Christian Sasso , Siddharth Kasat , Ankur Goyal , Amitkumar Patel , Kishan Kumar Kotari Uppunda
IPC分类号： H04L12/28
CPC分类号： H04L49/357
摘要： According to one aspect, a Fiber Channel (FC) switch that is currently serving as a Principal Switch among a plurality of FC switches in a FC Fabric sends an Exchange Fabric Parameters (EFP) frame having an empty domain identifier list to neighboring FC switches during a first portion a Principal Switch Selection phase. During a second portion of the Principal Switch Selection phase that is after the first portion, the first Fiber Channel switch sends to neighboring FC switches an EFP frame having a non-empty domain identifier list to indicate to the neighboring FC switches that the first FC switch is to remain serving as the Principal Switch in the FC Fabric.
摘要翻译： 根据一个方面，在FC Fabric中的多个FC交换机之中当前用作主交换机的光纤通道（FC）交换机在相邻FC交换机之间发送具有空域标识符列表的交换结构参数（EFP）帧到相邻的FC交换机 主开关选择阶段的第一部分。 在第一部分之后的主交换机选择阶段的第二部分期间，第一光纤通道交换机向相邻FC交换机发送具有非空域标识符列表的EFP帧，以向相邻FC交换机指示第一FC交换机 将继续担任FC Fabric中的主交换机。
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公开(公告)号：US20140050077A1
公开(公告)日：2014-02-20
申请号：US13589333
申请日：2012-08-20
IPC分类号： H04L29/14
CPC分类号： H04L69/40 , H04L12/4641
摘要： In Service Software Upgrade (ISSU) permits administrators to upgrade the control plane software of a network device without any disruption to the traffic passing through the data plane of the network device. However, because the control plane is unavailable, the network device is unable to transmit periodic messages to re-subscribe to specific VLANs. This may result in a service outage in end devices that rely on the network device to receive data assigned to those VLANs. To prevent the network device from being unsubscribed from the VLANs while the control plane is unavailable, the network device may transmit a control plane message before starting ISSU. Once a neighboring network device receives the message, the neighboring device delays unsubscribing the network device until the control plane is again available. Thus, the network device may perform ISSU without the possibility of data traffic not reaching end devices.
摘要翻译： 在服务软件升级（ISSU）中，管理员可以升级网络设备的控制平面软件，而不会对通过网络设备数据平面的流量造成任何干扰。 然而，由于控制平面不可用，网络设备无法传输周期性消息以重新订阅特定的VLAN。 这可能导致依赖于网络设备的终端设备中的服务中断来接收分配给这些VLAN的数据。 为了防止网络设备在控制平面不可用时从VLAN中取消订阅，网络设备可以在开始ISSU之前发送控制平面消息。 一旦相邻网络设备接收到消息，相邻设备会延迟取消订阅网络设备，直到控制平面再次可用。 因此，网络设备可以执行ISSU而没有数据业务没有到达终端设备的可能性。
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