公开(公告)号：US11411864B1

公开(公告)日：2022-08-09

申请号：US17152908

申请日：2021-01-20

Applicant: Dell Products L.P.

Inventor： Karthi Kaliyamoorthy ,  Sathish Kumar Thanneerkulam Ravichandran ,  Karthik Krishnamurthy ,  Damodharan Sreenivasagaperumal

IPC: G06F15/16 ,  H04L45/00 ,  H04L45/586 ,  H04L12/46 ,  H04L45/24 ,  H04L101/622

Abstract: An asymmetric/symmetric IRB migration system includes an aggregated networking device subsystem with a first and second networking device that are both configured to operate according to an asymmetric IRB model. A migration system coupled to the aggregated networking device subsystem retrieves first and second asymmetric IRB attributes from the first and second networking devices, uses the first asymmetric IRB attributes to generate first symmetric IRB attributes for the first networking device, and uses the second asymmetric IRB attributes to generate second symmetric IRB attributes for the second networking device. The migration system then causes data destined for end host device(s) coupled to the aggregated networking device subsystem to be transmitted only to the first networking device, configures the first networking device using the first symmetric IRB attributes, and then configures the second networking device using the second symmetric IRB attributes.

公开(公告)号：US20210135903A1

公开(公告)日：2021-05-06

申请号：US16669985

申请日：2019-10-31

Applicant: Dell Products L.P.

Inventor： Avinash Natarajan ,  Damodharan Sreenivasagaperumal ,  Ramasubramani Mahadevan ,  Karthik Krishnamurthy

IPC: H04L12/46 ,  H04L12/751 ,  H04L12/715 ,  H04L12/761 ,  H04L12/947

Abstract: A VXLAN multi-tenant inter-networking device packet forwarding system includes a first aggregated networking device coupled to a first host device and a second aggregated networking device that is coupled to second host devices. The first aggregated networking device receives a data packet from the first host device and, in response, identifies a virtual network associated with the first host device. Based on a first and second portion of a virtual network identifier that identifies the virtual network, the first aggregated networking device generates respective first and second packet forwarding identifiers. The first aggregated networking device then provides the first and second packet forwarding identifiers in the data packet, and forwards the data packet to the second aggregated networking device. The second aggregated networking device may then forward the data packet to one of the second host devices based on the first and second packet forwarding identifiers in the data packet.

公开(公告)号：US20160344631A1

公开(公告)日：2016-11-24

申请号：US14715235

申请日：2015-05-18

Applicant: Dell Products L.P.

Inventor： Karthik Krishnamurthy

IPC: H04L12/801 ,  H04L12/825

CPC classification number: H04L47/115 ,  H04L12/56 ,  H04L47/11 ,  H04L47/26

Abstract: A congestion notification system includes a networking device coupling a sender device to a receiver device. The networking device is configured to detect a congestion situation. When the networking device will provide a first congestion notification in a first packet received from the sender device in response to detecting the congestion situation, as well as retrieve sender device information from the first packet and store that sender device information in a database. Following the sending of the first packet to the receiver device, the networking device receives a second packet that was sent from the receiver device prior to the receiver device receiving the first packet. In response to determining that the second packet includes the sender device information that is stored in the database, the networking device provides a second congestion notification in the second packet. The networking device then sends the second packet to the sender device.

Abstract translation: 拥塞通知系统包括将发送者设备耦合到接收机设备的联网设备。 网络设备配置为检测拥塞情况。 当网络设备响应于检测到拥塞情况而从发送者设备接收到的第一分组中提供第一拥塞通知，以及从第一分组检索发送者设备信息并将该发送者设备信息存储在数据库中。 在将第一分组发送到接收机设备之后，网络设备接收在接收机设备接收第一分组之前从接收机设备发送的第二分组。 响应于确定第二分组包括存储在数据库中的发送者设备信息，网络设备在第二分组中提供第二拥塞通知。 网络设备然后将第二个分组发送给发送者设备。

公开(公告)号：US20160212041A1

公开(公告)日：2016-07-21

申请号：US14599102

申请日：2015-01-16

Applicant: DELL PRODUCTS L.P.

Inventor： Karthik Krishnamurthy

IPC: H04L12/721 ,  H04L12/709 ,  H04L12/46

CPC classification number: H04L45/66 ,  H04L12/4641 ,  H04L45/245

Abstract: Embodiments of the present invention include systems and methods for providing more efficient switching of data traffic in networks that include a link aggregation domain. In embodiments, when packets arrive at one virtual link trunking (VLT) unit via an inter-node link (INL) from a peer VLT unit in the VLT domain, the first VLT unit checks whether the Media Access Control source address (MAC SA) was learned on a VLT LAG. If the MAC SA was learned on a VLT LAG, then, in embodiments, a special packet is sent to a VLT termination unit to have it learn the MAC destination address of the original packet on a sub-LAG from which the special packet was received. Learning the MAC destination address on the sub-LAG rather than the parent LAG allows for more direct switching of future packets.

Abstract translation: 本发明的实施例包括用于在包括链路聚合域的网络中提供数据业务的更有效的切换的系统和方法。 在实施例中，当分组经由VLT域中的对等VLT单元经由节点间链路（INL）到达一个虚拟链路集群（VLT）单元时，第一VLT单元检查媒体访问控制源地址（MAC SA） 在VLT LAG上学到了。 如果在VLT LAG上学习了MAC SA，则在实施例中，特殊分组被发送到VLT终端单元，以使其在接收到特殊分组的子LAG上学习原始分组的MAC目的地址 。 学习子LAG而不是父LAG上的MAC目的地址可以更加直接地切换未来的数据包。

公开(公告)号：US20240171514A1

公开(公告)日：2024-05-23

申请号：US17991923

申请日：2022-11-22

Applicant: Dell Products L.P.

Inventor： Sathish Kumar Thanneerkulam Ravichandran ,  Karthik Krishnamurthy

IPC: H04L45/76 ,  G06F9/455 ,  H04L45/24

CPC classification number: H04L45/76 ,  G06F9/45558 ,  H04L45/24 ,  G06F2009/45595

Abstract: A VTEP data traffic forwarding system includes a second VTEP device coupled to a data traffic provisioning device and a first VTEP device. The second VTEP device identifies a virtual machine directly coupled to the first VTEP device, associates a first VTEP device identifier for the first VTEP device in a database with a virtual machine identifier for the virtual machine, and identifies the association of the first VTEP device identifier and the virtual machine identifier to the data traffic provisioning device, with the association of the first VTEP device identifier and the virtual machine identifier causing the data traffic provisioning device to provide the first VTEP device identifier in data traffic destined for the virtual machine. The second VTEP device then receives data traffic including the first VTEP device identifier from the data traffic provisioning device and, in response, forwards the data traffic to the first VTEP device.

公开(公告)号：US09929937B2

公开(公告)日：2018-03-27

申请号：US14838008

申请日：2015-08-27

Applicant: Dell Products L.P.

Inventor： Ravikumar Sivasankar ,  Ramasubramani Mahadevan ,  Karthik Krishnamurthy

IPC: H04L12/713 ,  H04L12/46 ,  H04L12/28 ,  H04L12/705 ,  H04L12/709

CPC classification number: H04L45/18 ,  H04L12/2865 ,  H04L12/462 ,  H04L45/245 ,  H04L45/586 ,  H04L2012/4629

Abstract: A layer 3 routing loop prevention system includes a port extender coupled to a first and second control bridges by a Link Aggregation Group (LAG). The first and second control bridges are coupled by an interchassis link. When the first control bridge receives a packet and determines that its LAG link to the port extender is unavailable, it provides a control bridge failover identifier in the packet and performs layer 3 forwarding to send the packet to the second control bridge over the interchassis link. When the second control bridge receives the packet though the interchassis link and determines that its LAG link to the port extender is unavailable, that the packet includes the first control bridge failover identifier, and that layer 3 forwarding will result in the packet being sent back to the first control bridge device, the packet is dropped to prevent layer 3 routing loops.

公开(公告)号：US20170063668A1

公开(公告)日：2017-03-02

申请号：US14838008

申请日：2015-08-27

Applicant: Dell Products L.P.

Inventor： Ravikumar Sivasankar ,  Ramasubramani Mahadevan ,  Karthik Krishnamurthy

IPC: H04L12/705 ,  H04L12/713 ,  H04L12/46 ,  H04L12/709

CPC classification number: H04L45/18 ,  H04L12/2865 ,  H04L12/462 ,  H04L45/245 ,  H04L45/586 ,  H04L2012/4629

Abstract: A layer 3 routing loop prevention system includes a port extender coupled to a first and second control bridges by a LAG. The first and second control bridges are coupled by an interchassis link. When the first control bridge receives a packet and determines that its LAG link to the port extender is unavailable, it provides a control bridge failover identifier in the packet and performs layer 3 forwarding to send the packet to the second control bridge over the interchassis link. When the second control bridge receives the packet though the interchassis link and determines that its LAG link to the port extender is unavailable, that the packet includes the first control bridge failover identifier, and that layer 3 forwarding will result in the packet being sent back to the first control bridge device, the packet is dropped to prevent layer 3 routing loops.

Abstract translation: 层3路由环路防护系统包括由LAG耦合到第一和第二控制网桥的端口扩展器。 第一和第二控制桥通过机架间连接耦合。 当第一个控制网桥接收到数据包并确定其到端口扩展器的LAG链路不可用时，它在数据包中提供控制网桥故障转移标识符，并执行第3层转发，以通过机架间链路将数据包发送到第二个控制桥。 当第二控制桥通过机架间链路接收分组并确定其到端口扩展器的LAG链路不可用时，该分组包括第一控制网桥故障转移标识符，并且该层3转发将导致分组被发送回 第一个控制网桥设备，丢弃数据包以防止第3层路由环路。

公开(公告)号：US20220231941A1

公开(公告)日：2022-07-21

申请号：US17152908

申请日：2021-01-20

Applicant: Dell Products L.P.

Inventor： Karthi Kaliyamoorthy ,  Sathish Kumar Thanneerkulam Ravichandran ,  Karthik Krishnamurthy ,  Damodharan Sreenivasagaperumal

IPC: H04L12/721 ,  H04L12/713 ,  H04L12/707 ,  H04L12/709 ,  H04L29/12 ,  H04L12/46

Abstract: An asymmetric/symmetric IRB migration system includes an aggregated networking device subsystem with a first and second networking device that are both configured to operate according to an asymmetric IRB model. A migration system coupled to the aggregated networking device subsystem retrieves first and second asymmetric IRB attributes from the first and second networking devices, uses the first asymmetric IRB attributes to generate first symmetric IRB attributes for the first networking device, and uses the second asymmetric IRB attributes to generate second symmetric IRB attributes for the second networking device. The migration system then causes data destined for end host device(s) coupled to the aggregated networking device subsystem to be transmitted only to the first networking device, configures the first networking device using the first symmetric IRB attributes, and then configures the second networking device using the second symmetric IRB attributes.

公开(公告)号：US09792242B2

公开(公告)日：2017-10-17

申请号：US14565248

申请日：2014-12-09

Applicant: DELL PRODUCTS L.P.

Inventor： Karthik Krishnamurthy ,  Ramasubramani Mahadevan

IPC: G06F13/40 ,  H04L12/931 ,  H04L12/721 ,  H04L12/761 ,  H04L12/709

CPC classification number: G06F13/4045 ,  G06F13/4022 ,  G06F13/4068 ,  H04L45/16 ,  H04L45/245 ,  H04L45/44 ,  H04L49/201 ,  H04L49/70

Abstract: Aspects of the present invention include a port extender environment using the port extenders to dynamically select a data path. In embodiments of the present invention, each port extender can communicate data traffic to another port extender or to a host receiver. The communication path is selected in the port extender using a hashing system.

公开(公告)号：US09736068B2

公开(公告)日：2017-08-15

申请号：US14599102

申请日：2015-01-16

Applicant: DELL PRODUCTS L.P.

Inventor： Karthik Krishnamurthy

IPC: H04L12/721 ,  H04L12/46 ,  H04L12/709

CPC classification number: H04L45/66 ,  H04L12/4641 ,  H04L45/245

Abstract: Embodiments of the present invention include systems and methods for providing more efficient switching of data traffic in networks that include a link aggregation domain. In embodiments, when packets arrive at one virtual link trunking (VLT) unit via an inter-node link (INL) from a peer VLT unit in the VLT domain, the first VLT unit checks whether the Media Access Control source address (MAC SA) was learned on a VLT LAG. If the MAC SA was learned on a VLT LAG, then, in embodiments, a special packet is sent to a VLT termination unit to have it learn the MAC destination address of the original packet on a sub-LAG from which the special packet was received. Learning the MAC destination address on the sub-LAG rather than the parent LAG allows for more direct switching of future packets.