公开(公告)号：US09742700B2

公开(公告)日：2017-08-22

申请号：US14864062

申请日：2015-09-24

Applicant: Cisco Technology, Inc.

Inventor： Venkata Talagadadeevi ,  Srinivas Pitta ,  Lavanya Apsani ,  Kishan Kumar Kotari Uppunda

IPC: H04L12/937 ,  H04W76/02

CPC classification number: H04L49/253 ,  H04L49/353

Abstract: In one embodiment, a method for enabling communication between two network fiber channel (FC) switches, includes: receiving at least one protocol frame at a first network FC switch, the at least one protocol frame being received from a second network FC switch connected to the first network FC switch and comprising information related to a manufacturer of the second network FC switch; retrieving a first identifier of the second network FC switch from the at least one protocol frame, the first identifier comprising primary manufacturer information identifying a manufacturer of the second network FC switch; determining that the retrieved first identifier does not match one of a plurality of peer switch manufacturer identifiers stored in a memory of the first network FC switch, each of the plurality of peer switch manufacturer identifiers identifying peer switches for which one or more features may be enabled for communicating with the first network FC switch; retrieving a second identifier of the second network FC switch from the at least one protocol frame when the retrieved first identifier does not match one of the plurality of peer switch manufacturer identifiers, the second identifier comprising secondary manufacturer information identifying the manufacturer of the second network FC switch; and upon determining that the retrieved second identifier matches one of the plurality of peer switch manufacturer identifiers, updating the plurality of peer switch manufacturer identifiers stored in memory of the first network FC switch to include the retrieved first identifier; and enabling at least one of the one or more features for the first network FC switch to communicate with the second network FC switch.

公开(公告)号：US10757040B2

公开(公告)日：2020-08-25

申请号：US15646800

申请日：2017-07-11

Applicant: Cisco Technology, Inc.

Inventor： Karthik Subramani ,  Venu Gopal Tummala ,  Kishan Kumar Kotari Uppunda

IPC: H04L12/931 ,  H04L12/24 ,  G06F3/06 ,  H04L29/06 ,  H04L12/947 ,  H04L12/751 ,  H04L12/28 ,  H04L29/08 ,  G06F16/23

Abstract: Provided are techniques for the efficient distribution of peer zone databases in a FC Fabric. In an example, a switch instantiates a peer zone definition defining a peer zone in which two or more initiator host devices are each permitted to communicate with one or more target storage devices via the switched FC fabric and the two or more initiator host devices are prevented from communicating with each other. The switch stores the peer zone definition in a peer zone database at the FC switch, and distributes the peer zone definition to other FC switches of the switched FC fabric without performing a Fabric lock operation.

公开(公告)号：US09706016B2

公开(公告)日：2017-07-11

申请号：US14051896

申请日：2013-10-11

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Harsha Bharadwaj ,  Prabesh Babu Nanjundaiah ,  Sumanth Sindiri ,  Ankan Ghosh ,  Kishan Kumar Kotari Uppunda

IPC: H04L12/26 ,  H04L29/06 ,  H04L12/24 ,  H04L12/707 ,  H04L29/08 ,  H04L29/14 ,  H04L12/751

CPC classification number: H04L69/22 ,  H04L29/14 ,  H04L41/082 ,  H04L43/10 ,  H04L45/02 ,  H04L45/22 ,  H04L67/34

Abstract: In one example embodiment, a time unconstrained fabric switch software upgrade function is described for an in-switch-software-upgrade/downgrade (ISSU) in a network switch. Prior to an ISSU, Hello protocol data unit (PDU) information is stored for relevant control protocols of associated interfaces of the switch. The Hello PDU information comprises information on messages and data exchanged by the control protocols that may be used to maintain communications links of the switch. During the configuring of the ISSU, and while the control plane of the switch is, at least partially, dysfunctional, Hello PDUs are sent on the interfaces according to the stored PDU information in order to maintain the communication links. The Hello PDU information may include a time interval value for each relevant protocol that determines when Hello PDUs are sent.

公开(公告)号：US11381524B2

公开(公告)日：2022-07-05

申请号：US16931730

申请日：2020-07-17

Applicant: Cisco Technology, Inc.

Inventor： Karthik Subramani ,  Venu Gopal Tummala ,  Kishan Kumar Kotari Uppunda

IPC: H04L49/356 ,  H04L12/28 ,  H04L41/0813 ,  H04L41/0893 ,  H04L41/12 ,  H04L45/02 ,  H04L49/25 ,  H04L9/40 ,  H04L41/0803 ,  H04L67/1097 ,  G06F3/06 ,  G06F16/23

Abstract: Provided are techniques for the efficient distribution of peer zone databases in a FC Fabric. In an example, a switch instantiates a peer zone definition defining a peer zone in which two or more initiator host devices are each permitted to communicate with one or more target storage devices via the switched FC fabric and the two or more initiator host devices are prevented from communicating with each other. The switch stores the peer zone definition in a peer zone database at the FC switch, and distributes the peer zone definition to other FC switches of the switched FC fabric without performing a Fabric lock operation.

公开(公告)号：US20200351221A1

公开(公告)日：2020-11-05

申请号：US16931730

申请日：2020-07-17

Applicant: Cisco Technology, Inc.

Inventor： Karthik Subramani ,  Venu Gopal Tummala ,  Kishan Kumar Kotari Uppunda

IPC: H04L12/931 ,  H04L12/947 ,  H04L12/751 ,  H04L12/28 ,  H04L12/24 ,  G06F3/06 ,  H04L29/06

Abstract: Provided are techniques for the efficient distribution of peer zone databases in a FC Fabric. In an example, a switch instantiates a peer zone definition defining a peer zone in which two or more initiator host devices are each permitted to communicate with one or more target storage devices via the switched FC fabric and the two or more initiator host devices are prevented from communicating with each other. The switch stores the peer zone definition in a peer zone database at the FC switch, and distributes the peer zone definition to other FC switches of the switched FC fabric without performing a Fabric lock operation.

公开(公告)号：US20190020603A1

公开(公告)日：2019-01-17

申请号：US15646800

申请日：2017-07-11

Applicant: Cisco Technology, Inc.

Inventor： Karthik Subramani ,  Venu Gopal Tummala ,  Kishan Kumar Kotari Uppunda

IPC: H04L12/931 ,  H04L12/947 ,  H04L12/751 ,  H04L12/28

Abstract: Provided are techniques for the efficient distribution of peer zone databases in a FC Fabric. In an example, a switch instantiates a peer zone definition defining a peer zone in which two or more initiator host devices are each permitted to communicate with one or more target storage devices via the switched FC fabric and the two or more initiator host devices are prevented from communicating with each other. The switch stores the peer zone definition in a peer zone database at the FC switch, and distributes the peer zone definition to other FC switches of the switched FC fabric without performing a Fabric lock operation.

公开(公告)号：US10594599B2

公开(公告)日：2020-03-17

申请号：US15248071

申请日：2016-08-26

Applicant: Cisco Technology, Inc.

Inventor： Kishan Kumar Kotari Uppunda ,  Karthik Subramani ,  Venu Gopal Tummala ,  Jayaprakash Nallapalingu ,  Sumanth Sindiri ,  Malipedy Vijaya Kumar

IPC: H04L12/703 ,  H04L12/707 ,  H04L12/931

Abstract: Presented herein are priority route based techniques for mitigation of slow drain devices in a Fibre Channel (FC) fabric comprising a plurality of FC switches. In accordance with examples presented herein, a first FC switch in a FC fabric receives an indication that a first computing device attached to the FC fabric has entered a slow drain condition. The first FC switch is configured to prepare and install a priority route for packet flows directed to the first computing device.

公开(公告)号：US20180063004A1

公开(公告)日：2018-03-01

申请号：US15248071

申请日：2016-08-26

Applicant: Cisco Technology, Inc.

Inventor： Kishan Kumar Kotari Uppunda ,  Karthik Subramani ,  Venu Gopal Tummala ,  Jayaprakash Nallapalingu ,  Sumanth Sindiri ,  Malipedy Vijaya Kumar

IPC: H04L12/851 ,  H04L12/931

Abstract: Presented herein are priority route based techniques for mitigation of slow drain devices in a Fibre Channel (FC) fabric comprising a plurality of FC switches. In accordance with examples presented herein, a first FC switch in a FC fabric receives an indication that a first computing device attached to the FC fabric has entered a slow drain condition. The first FC switch is configured to prepare and install a priority route for packet flows directed to the first computing device.

公开(公告)号：US09385969B2

公开(公告)日：2016-07-05

申请号：US14016469

申请日：2013-09-03

Applicant: Cisco Technology, Inc.

Inventor： Kishan Kumar Kotari Uppunda ,  Prabesh Babu Nanjundaiah

IPC: H04L12/26 ,  H04L12/931 ,  H04L12/24 ,  H04L29/12

CPC classification number: H04L49/356 ,  H04L41/00 ,  H04L49/357 ,  H04L49/70 ,  H04L61/2038 ,  H04L61/6022

Abstract: A Fiber (Fiber) Channel (FC) switch and related methods are provided for merging FC fabrics. During a merger process of two separate FC fabrics, a principal switch in a merged FC fabric allocates a domain identifier (ID) to each switch in the merged FC fabric. The principal switch is configured to build a complete domain ID list that identifies the domain IDs for all switches in the merged FC fabric. After the complete domain ID list is generated, the principal switch transmits a message to all switches in the merged FC fabric, the message including the complete domain ID list.

Abstract translation: 提供光纤（Fiber）Channel（FC）交换机及相关方法来合并FC结构。 在两个单独的FC结构的合并过程中，合并FC结构中的主交换机为合并的FC结构中的每个交换机分配域标识符（ID）。 主交换机被配置为构建完整的域ID列表，其标识合并的FC结构中的所有交换机的域ID。 生成完整的域ID列表后，主交换机向合并的FC结构中的所有交换机发送消息，该消息包括完整的域ID列表。

公开(公告)号：US20150103644A1

公开(公告)日：2015-04-16

申请号：US14051896

申请日：2013-10-11

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Harsha Bharadwaj ,  Prabesh Babu Nanjundaiah ,  Sumanth Sindiri ,  Ankan Ghosh ,  Kishan Kumar Kotari Uppunda

IPC: H04L12/24 ,  H04L29/06

CPC classification number: H04L69/22 ,  H04L29/14 ,  H04L41/082 ,  H04L43/10 ,  H04L45/02 ,  H04L45/22 ,  H04L67/34

Abstract: In one example embodiment, a time unconstrained fabric switch software upgrade function is described for an in-switch-software-upgrade/downgrade (ISSU) in a network switch. Prior to an ISSU, Hello protocol data unit (PDU) information is stored for relevant control protocols of associated interfaces of the switch. The Hello PDU information comprises information on messages and data exchanged by the control protocols that may be used to maintain communications links of the switch. During the configuring of the ISSU, and while the control plane of the switch is, at least partially, dysfunctional, Hello PDUs are sent on the interfaces according to the stored PDU information in order to maintain the communication links. The Hello PDU information may include a time interval value for each relevant protocol that determines when Hello PDUs are sent.

Abstract translation: 在一个示例实施例中，描述了用于网络交换机中的交换机 - 软件升级/降级（ISSU）的时间无约束的网络交换机软件升级功能。 在ISSU之前，为交换机相关接口的相关控制协议存储Hello协议数据单元（PDU）信息。 Hello PDU信息包括关于可以用于维护交换机的通信链路的控制协议交换的消息和数据的信息。 在配置ISSU期间，并且交换机的控制平面至少部分地功能失调，根据存储的PDU信息在接口上发送Hello PDU，以便维护通信链路。 Hello PDU信息可以包括确定何时发送Hello PDU的每个相关协议的时间间隔值。