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1. 发明申请

US20060206656A1 Apparatus and method for preventing loops in a computer network 有权
标题翻译：用于防止计算机网络中的环路的装置和方法
公开(公告)号：US20060206656A1
公开(公告)日：2006-09-14
申请号：US11434471
申请日：2006-05-15
申请人： Marco Di Benedetto , Umesh Mahajan , Silvano Gai
发明人： Marco Di Benedetto , Umesh Mahajan , Silvano Gai
IPC分类号： G06F13/00
CPC分类号： H04L45/00 , H04L45/48
摘要： A network device is configured in a manner to prevent connectivity loops such as one way connectivity loops. A user configures a port of the network device to have an associated state. The state indicates that the port is for communication up the spanning tree towards a root network device, or down the spanning tree away from the root network device. The spanning tree protocol is then executed and determines a role for the port. The role determined by the spanning tree protocol is compared to the user selected state, and if there is an inconsistency, for example one that would indicate a one way connectivity loop, the port is blocked.
摘要翻译：网络设备被配置为防止连接环路，例如单向连接环路。用户将网络设备的端口配置为具有关联状态。状态表示该端口用于向生成树向根网络设备进行通信，或者将该生成树从根网络设备远离。然后执行生成树协议并确定端口的角色。将生成树协议确定的角色与用户选择的状态进行比较，如果存在不一致，例如指示单向连接环路的端口，则该端口被阻止。

2. 发明授权

US07076594B2 Apparatus and method for preventing one way connectivity loops in a computer network 失效
标题翻译：用于防止计算机网络中的单向连接环路的装置和方法
公开(公告)号：US07076594B2
公开(公告)日：2006-07-11
申请号：US09747676
申请日：2000-12-22
申请人： Marco Di Benedetto , Umesh Mahajan , Silvano Gai
发明人： Marco Di Benedetto , Umesh Mahajan , Silvano Gai
IPC分类号： G06F1/00
CPC分类号： H04L45/00 , H04L45/48
摘要： Ports of a switch are assigned by a person, for example a network manager, to be for communication up the spanning tree toward the root switch (“up ports”), or down the spanning tree away from the root switch (“down ports”). This assignment is made by enabling “Uplinkguard” status for a desired up port, and by connecting the desired port to a switch which it is desired to place in the higher layer of the spanning tree. A port having Uplinkguard enabled is prevented, for example by software or firmware in its switch, from transitioning to a designated role. Uplinkguard-enabling a port, by preventing the port from transitioning to the designated role, has at least two consequences: preventing the port from being selected by the STP to transmit to lower switches in the spanning tree; and, preventing the port from transmitting when a one way connectivity fault develops on that port. A port with Uplinkguard enabled may transition to root port role. In the event that there is one way connectivity from a port, that port will not receive BPDU messages, and if the port is in blocked state, it will believe that it should take over and become the designated port for the external link to which it is connected. Uplinkguard prevents the port from transitioning to designated role. When the port attempts to transition into designated role, Uplinkguard forces the port to transition into blocked role, thereby eliminating formation of loops caused by one way connectivity faults.
摘要翻译：交换机的端口由一个人（例如网络管理器）分配，用于向生成树向根交换机（“上行端口”）通信，或者从根交换机（“向下端口”）向下生成树）。通过为所需的上行端口启用“上行链路保护”状态，并将期望的端口连接到希望放置在生成树的较高层中的交换机进行此分配。启用了启用了Uplinkguard的端口，例如通过其切换中的软件或固件，从转换到指定的角色。通过防止端口转移到指定角色，上行链路启用端口至少有两个后果：防止端口被STP选择发送到生成树中的下层交换机; 并且在该端口上发生单向连接故障时，防止端口发送。启用了Uplinkguard的端口可能会转换到根端口角色。在端口有单向连接的情况下，该端口不会收到BPDU消息，如果该端口处于阻塞状态，则认为该端口将被接管并成为其所在外部链路的指定端口已连接。上行链路防止端口转换到指定的角色。当端口尝试转换为指定角色时，上行链路强制端口转换为阻塞角色，从而消除由单向连接故障引起的环路形成。

3. 发明授权

US07412557B2 Apparatus and method for preventing loops in a computer network 有权
标题翻译：用于防止计算机网络中的环路的装置和方法
公开(公告)号：US07412557B2
公开(公告)日：2008-08-12
申请号：US11434471
申请日：2006-05-15
申请人： Marco Di Benedetto , Umesh Mahajan , Silvano Gai
发明人： Marco Di Benedetto , Umesh Mahajan , Silvano Gai
IPC分类号： G06F13/00
CPC分类号： H04L45/00 , H04L45/48
摘要： A network device is configured in a manner to prevent connectivity loops such as one way connectivity loops. A user configures a port of the network device to have an associated state. The state indicates that the port is for communication up the spanning tree towards a root network device, or down the spanning tree away from the root network device. The spanning tree protocol is then executed and determines a role for the port. The role determined by the spanning tree protocol is compared to the user selected state, and if there is an inconsistency, for example one that would indicate a one way connectivity loop, the port is blocked.
摘要翻译：网络设备被配置为防止连接环路，例如单向连接环路。用户将网络设备的端口配置为具有关联状态。状态表示该端口用于向生成树向根网络设备进行通信，或者将该生成树从根网络设备远离。然后执行生成树协议并确定端口的角色。将生成树协议确定的角色与用户选择的状态进行比较，如果存在不一致，例如指示单向连接环路的端口，则该端口被阻止。

4. 发明授权

US08514856B1 End-to-end fibre channel over ethernet 有权
标题翻译：端到端光纤通道以太网
公开(公告)号：US08514856B1
公开(公告)日：2013-08-20
申请号：US12822551
申请日：2010-06-24
申请人： Silvano Gai , Claudio Desanti , Marco Di Benedetto
发明人： Silvano Gai , Claudio Desanti , Marco Di Benedetto
IPC分类号： H04L12/56
CPC分类号： H04L29/08702 , H04L12/462 , H04L49/351 , H04L49/357 , H04L49/602
摘要： In one embodiment, one or more Fiber Channel over Ethernet (FCoE) proxy points (FPPs) communicates control and management information with a separately housed FCoE control and management plane (F-CMP) server in order to direct data plane functionality of the FPPs. Each FPP also proxies control and management protocols between the F-CMP server and one or more FCoE end-point devices for which the FPP is responsible (on FCoE ports). Traffic received by the FPP may then be processed according to the directed data plane functionality, such that FCoE traffic transmitted between first and second FCoE end-point devices separated by the Ethernet network is directed over the Ethernet network end-to-end between correspondingly responsible FPPs without traversing the F-CMP server.
摘要翻译：在一个实施例中，一个或多个以太网光纤通道（FCoE）代理点（FPP）通过单独容纳的FCoE控制和管理平面（F-CMP）服务器来传送控制和管理信息，以便引导FPP的数据平面功能。每个FPP还代理F-CMP服务器与FPP负责的一个或多个FCoE端点设备（FCoE端口）之间的控制和管理协议。然后可以根据定向数据平面功能来处理由FPP接收的业务，使得由以太网网络分离的第一和第二FCoE端点设备之间传输的FCoE流量在相应负责的端到端 FPP不经过F-CMP服务器。

5. 发明申请

US20090259816A1 Techniques for Improving Mirroring Operations Implemented In Storage Area Networks and Network Based Virtualization 审中-公开
标题翻译：用于改进存储区域网络和基于网络的虚拟化中镜像操作的技术
公开(公告)号：US20090259816A1
公开(公告)日：2009-10-15
申请号：US12365076
申请日：2009-02-03
申请人： Samar Sharma , Silvano Gai , Dinesh Dutt , Sanjaya Kumar , Umesh Mahajan
发明人： Samar Sharma , Silvano Gai , Dinesh Dutt , Sanjaya Kumar , Umesh Mahajan
IPC分类号： G06F12/16
CPC分类号： G06F11/2064 , G06F11/2069 , G06F11/2082 , G06F11/2087 , G06F2201/84
摘要： A technique is provided for implementing online mirroring of a volume in a storage area network. A first instance of the volume is instantiated at a first port of the fibre channel fabric for enabling I/O operations to be performed at the volume. One or more mirroring procedures may be performed at the volume. In at least one implementation, the first port is able to perform first I/O operations at the volume concurrently while the mirroring procedures are being performed at the first volume. In one implementation, the mirroring procedures may be implemented at a fabric switch of the storage area network. Additionally, in at least one implementation, multiple hosts may be provided with concurrent access to the volume during the mirroring operations without serializing the access to the volume.
摘要翻译：提供了一种用于实现存储区域网络中的卷的在线镜像的技术。该卷的第一个实例在光纤通道结构的第一个端口处被实例化，以便在卷上执行I / O操作。可以在体积上执行一个或多个镜像过程。在至少一个实现中，第一个端口能够在第一个卷执行镜像过程时同时执行卷上的第一个I / O操作。在一个实现中，可以在存储区域网络的结构交换机处实现镜像过程。此外，在至少一个实现中，可以在镜像操作期间向多个主机提供对卷的并发访问，而不对序列化对卷的访问。

6. 发明申请

US20090228651A1 Mirroring Mechanisms For Storage Area Networks and Network Based Virtualization 有权
标题翻译：用于存储区域网络和基于网络的虚拟化的镜像机制
公开(公告)号：US20090228651A1
公开(公告)日：2009-09-10
申请号：US12364416
申请日：2009-02-02
申请人： Samar Sharma , Silvano Gai , Dinesh Dutt , Sanjaya Kumar , Umesh Mahajan
发明人： Samar Sharma , Silvano Gai , Dinesh Dutt , Sanjaya Kumar , Umesh Mahajan
IPC分类号： G06F12/00 , G06F3/00 , G06F12/16
CPC分类号： G06F11/2069 , G06F11/2064 , G06F11/2082 , G06F11/2087 , G06F2201/84
摘要： A technique is provided for implementing online mirroring of a volume in a storage area network. A first instance of the volume is instantiated at a first port of the fibre channel fabric for enabling I/O operations to be performed at the volume. One or more mirroring procedures may be performed at the volume. In at least one implementation, the first port is able to perform first I/O operations at the volume concurrently while the mirroring procedures are being performed at the first volume. In one implementation, the mirroring procedures may be implemented at a fabric switch of the storage area network. Additionally, in at least one implementation, multiple hosts may be provided with concurrent access to the volume during the mirroring operations without serializing the access to the volume.
摘要翻译：提供了一种用于实现存储区域网络中的卷的在线镜像的技术。该卷的第一个实例在光纤通道结构的第一个端口处被实例化，以便在卷上执行I / O操作。可以在体积上执行一个或多个镜像过程。在至少一个实现中，第一个端口能够在第一个卷执行镜像过程时同时执行卷上的第一个I / O操作。在一个实现中，可以在存储区域网络的结构交换机处实现镜像过程。此外，在至少一个实现中，可以在镜像操作期间向多个主机提供对卷的并发访问，而不对序列化对卷的访问。

7. 发明申请

US20070094466A1 Techniques for improving mirroring operations implemented in storage area networks and network based virtualization 审中-公开
标题翻译：用于改进在存储区域网络和基于网络的虚拟化中实现的镜像操作的技术
公开(公告)号：US20070094466A1
公开(公告)日：2007-04-26
申请号：US11256450
申请日：2005-10-21
申请人： Samar Sharma , Silvano Gai , Dinesh Dutt , Sanjaya Kumar , Umesh Mahajan
发明人： Samar Sharma , Silvano Gai , Dinesh Dutt , Sanjaya Kumar , Umesh Mahajan
IPC分类号： G06F12/16
CPC分类号： G06F11/2064 , G06F3/0605 , G06F3/061 , G06F3/0635 , G06F3/0665 , G06F3/067 , G06F11/2069 , G06F11/2082 , G06F11/2087 , G06F2201/84 , H04L67/1095 , H04L67/1097
摘要： A technique is provided for implementing online mirroring of a volume in a storage area network. A first instance of the volume is instantiated at a first port of the fibre channel fabric for enabling I/O operations to be performed at the volume. One or more mirroring procedures may be performed at the volume. In at least one implementation, the first port is able to perform first I/O operations at the volume concurrently while the mirroring procedures are being performed at the first volume. In one implementation, the mirroring procedures may be implemented at a fabric switch of the storage area network. Additionally, in at least one implementation, multiple hosts may be provided with concurrent access to the volume during the mirroring operations without serializing the access to the volume.
摘要翻译：提供了一种用于实现存储区域网络中的卷的在线镜像的技术。该卷的第一个实例在光纤通道结构的第一个端口处被实例化，以便在卷上执行I / O操作。可以在体积上执行一个或多个镜像过程。在至少一个实现中，第一个端口能够在第一个卷执行镜像过程时同时执行卷上的第一个I / O操作。在一个实现中，可以在存储区域网络的结构交换机处实现镜像过程。此外，在至少一个实现中，可以在镜像操作期间向多个主机提供对卷的并发访问，而不对序列化对卷的访问。

8. 发明申请

US20070094465A1 Mirroring mechanisms for storage area networks and network based virtualization 审中-公开
标题翻译：存储区域网络和基于网络的虚拟化的镜像机制
公开(公告)号：US20070094465A1
公开(公告)日：2007-04-26
申请号：US11256292
申请日：2005-10-21
申请人： Samar Sharma , Silvano Gai , Dinesh Dutt , Sanjaya Kumar , Umesh Mahajan
发明人： Samar Sharma , Silvano Gai , Dinesh Dutt , Sanjaya Kumar , Umesh Mahajan
IPC分类号： G06F12/16
CPC分类号： G06F11/2069 , G06F11/2064 , G06F11/2082 , G06F11/2087 , G06F2201/84
摘要： A technique is provided for implementing online mirroring of a volume in a storage area network. A first instance of the volume is instantiated at a first port of the fibre channel fabric for enabling I/O operations to be performed at the volume. One or more mirroring procedures may be performed at the volume. In at least one implementation, the first port is able to perform first I/O operations at the volume concurrently while the mirroring procedures are being performed at the first volume. In one implementation, the mirroring procedures may be implemented at a fabric switch of the storage area network. Additionally, in at least one implementation, multiple hosts may be provided with concurrent access to the volume during the mirroring operations without serializing the access to the volume.
摘要翻译：提供了一种用于实现存储区域网络中的卷的在线镜像的技术。该卷的第一个实例在光纤通道结构的第一个端口处被实例化，以便在卷上执行I / O操作。可以在体积上执行一个或多个镜像过程。在至少一个实现中，第一个端口能够在第一个卷执行镜像过程时同时执行卷上的第一个I / O操作。在一个实现中，可以在存储区域网络的结构交换机处实现镜像过程。此外，在至少一个实现中，可以在镜像操作期间向多个主机提供对卷的并发访问，而不对序列化对卷的访问。

9. 发明授权

US09009427B2 Mirroring mechanisms for storage area networks and network based virtualization 有权
标题翻译：存储区域网络和基于网络的虚拟化的镜像机制
公开(公告)号：US09009427B2
公开(公告)日：2015-04-14
申请号：US12364416
申请日：2009-02-02
申请人： Samar Sharma , Silvano Gai , Dinesh Dutt , Sanjaya Kumar , Umesh Mahajan
发明人： Samar Sharma , Silvano Gai , Dinesh Dutt , Sanjaya Kumar , Umesh Mahajan
IPC分类号： G06F12/00 , G06F11/20
CPC分类号： G06F11/2069 , G06F11/2064 , G06F11/2082 , G06F11/2087 , G06F2201/84
摘要： A technique is provided for implementing online mirroring of a volume in a storage area network. A first instance of the volume is instantiated at a first port of the fiber channel fabric for enabling I/O operations to be performed at the volume. One or more mirroring procedures may be performed at the volume. In at least one implementation, the first port is able to perform first I/O operations at the volume concurrently while the mirroring procedures are being performed at the first volume. In one implementation, the mirroring procedures may be implemented at a fabric switch of the storage area network. Additionally, in at least one implementation, multiple hosts may be provided with concurrent access to the volume during the mirroring operations without serializing the access to the volume.
摘要翻译：提供了一种用于实现存储区域网络中的卷的在线镜像的技术。该卷的第一个实例在光纤通道结构的第一个端口处被实例化，以便在卷上执行I / O操作。可以在体积上执行一个或多个镜像过程。在至少一个实现中，第一个端口能够在第一个卷执行镜像过程时同时执行卷上的第一个I / O操作。在一个实现中，可以在存储区域网络的结构交换机处实现镜像过程。此外，在至少一个实现中，可以在镜像操作期间向多个主机提供对卷的并发访问，而不对序列化对卷的访问。

10. 发明申请

US20090259817A1 Mirror Consistency Checking Techniques For Storage Area Networks And Network Based Virtualization 审中-公开
标题翻译：用于存储区域网络和基于网络的虚拟化的镜像一致性检查技术
公开(公告)号：US20090259817A1
公开(公告)日：2009-10-15
申请号：US12365079
申请日：2009-02-03
申请人： Samar Sharma , Silvano Gai , Dinesh Dutt , Sanjaya Kumar , Umesh Mahajan
发明人： Samar Sharma , Silvano Gai , Dinesh Dutt , Sanjaya Kumar , Umesh Mahajan
IPC分类号： G06F12/16
CPC分类号： G06F11/2069 , G06F11/2064 , G06F11/2082 , G06F11/2087 , G06F2201/84
摘要： A technique is provided for facilitating information management in a storage area network. The storage area network may utilize a fibre channel fabric which includes a plurality of ports. The storage area network may also comprise a first volume which includes a first mirror copy and a second mirror copy. The storage area network may further comprise a mirror consistency data structure adapted to store mirror consistency information. A mirror consistency check procedure is performed to determine whether data of the first mirror copy is consistent with data of the second mirror copy. According to one implementation, the mirror consistency check procedure may be implemented using the consistency information stored at the mirror consistency data structure.
摘要翻译：提供了一种用于促进存储区域网络中的信息管理的技术。存储区域网络可以利用包括多个端口的光纤信道结构。存储区域网络还可以包括包括第一镜像副本和第二镜像副本的第一卷。存储区域网络还可以包括适于存储镜像一致性信息的镜像一致性数据结构。执行镜像一致性检查程序以确定第一镜像副本的数据是否与第二镜像副本的数据一致。根据一个实现，可以使用在镜像一致性数据结构中存储的一致性信息来实现镜像一致性检查过程。

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