公开(公告)号：US10862849B2

公开(公告)日：2020-12-08

申请号：US16258461

申请日：2019-01-25

Applicant: Dell Products L.P.

Inventor： Avinash Natarajan ,  Sudharsan Dhamal Gopalarathnam

IPC: H04L29/12 ,  H04L29/06 ,  H04L12/749 ,  H04L12/745

Abstract: An address resolution system a host device, a first networking device, and a second networking device that is coupled to the host device and the first networking device. The second networking device is configured to send a first address resolution communication to the first networking device. The second networking device may then receive a second address resolution communication from the first networking device in response to the first address resolution communication. The second address resolution communication includes networking device identification data that identifies the first networking device as having a networking type. The second networking device may then allocate, in an address resolution database in response to the networking device identification data identifying the first networking device as having the networking type, a first address resolution entry for the first networking device that includes an egress object.

公开(公告)号：US10749741B1

公开(公告)日：2020-08-18

申请号：US16394658

申请日：2019-04-25

Applicant: DELL PRODUCTS L.P.

Inventor： Ramasubramani Mahadevan ,  Avinash Natarajan

IPC: H04L12/24 ,  H04L12/46

Abstract: Described herein are systems and methods that provide for auto-discovery of VXLAN tunnel endpoints (VTEPs) using a protocol-independent multicast (PIM) bootstrap router (BSR). In one or more embodiments, a node may be configured via PIM messaging in which nodes of a network provide their candidate-rendezvous point (RP) advertisements send their information of candidate-RP to multicast group information to an elected BSR. The elected BSR consolidates the candidate-RP to multicast group information and propagates this information to nodes through PIM messages to all PIM routers in the network. In one or more embodiments, a node uses this information in combination with its local configuration mapping of VNIDs-to-multicast-group information to generate a remote VTEP-IP-(RP)-to-VNID mapping, which can be used to auto configure the node's VXLAN with remote-VTEP and VNI profiles in static VXLAN deployments.

公开(公告)号：US09118589B2

公开(公告)日：2015-08-25

申请号：US13792842

申请日：2013-03-11

Applicant: Dell Products L.P.

Inventor： Avinash Natarajan ,  Ramasubramani Mahadevan ,  K. P. Balasubramanian

IPC: H04L12/28 ,  H04L12/703 ,  H04L12/709 ,  H04J1/16 ,  H04L12/743 ,  H04L12/707

CPC classification number: H04L45/28 ,  H04L45/22 ,  H04L45/245 ,  H04L45/7453 ,  Y02D50/30

Abstract: A system and method for rapid virtual link trunk connection failure handling includes receiving a packet at a first network switching unit where the packet is to be forwarded to a second network switching unit, detecting a failure in a network connection between the first network switching unit and the second network switching unit and associated with a first LAG of the first network switching unit, determining a second LAG associated with an inter-chassis link (ICL) as a failover LAG for the first LAG, redirecting the packet to the second LAG, altering the packet to set a redirection status bit to a logic value, and forwarding the altered packet using the ICL.

Abstract translation: 用于快速虚拟链路中继连接故障处理的系统和方法包括在第一网络交换单元处接收分组，其中分组将被转发到第二网络交换单元，检测第一网络交换单元与第一网络交换单元之间的网络连接中的故障， 所述第二网络交换单元并且与所述第一网络交换单元的第一LAG相关联，确定与所述机架间链路（ICL）相关联的第二LAG作为所述第一LAG的故障转移LAG，将所述分组重定向到所述第二LAG，改变 该分组将重定向状态位设置为逻辑值，并使用ICL转发改变的分组。

公开(公告)号：US10289969B2

公开(公告)日：2019-05-14

申请号：US14830018

申请日：2015-08-19

Applicant: Dell Products L.P.

Inventor： Avinash Natarajan ,  Shathish Muthu Venkatesan ,  Sanal Kumar Sivaraman ,  Vinoth Kumar Arumugam ,  Rajasekhar Pulluru

IPC: G06Q10/06 ,  G06Q10/00 ,  G06Q50/00 ,  H04L12/24

Abstract: A system, method, and computer-readable medium are disclosed for managing an IT environment via a social network management operation. In various embodiments, the social network management operation enables an IT administrator to manage an IT environment using a social network analog. With the social network analog, IT administrators identify devices within the IT environment as friends. Additionally, in certain embodiments, events that occur in the devices which have been identified as friends by the IT administrators can be associated with an interest list. Additionally, in certain embodiments, the IT environment includes a plurality of spans of control, each of which is administered by different IT administrators.

公开(公告)号：US20160301608A1

公开(公告)日：2016-10-13

申请号：US14685369

申请日：2015-04-13

Applicant: DELL PRODUCTS L.P.

Inventor： Avinash Natarajan ,  Ramasubramani Mahadevan

IPC: H04L12/743 ,  H04L12/46 ,  H04L12/709 ,  H04L12/741

CPC classification number: H04L45/7453 ,  H04L12/2865 ,  H04L12/4641 ,  H04L45/24 ,  H04L45/245 ,  H04L45/54 ,  Y02D30/30 ,  Y02D50/30

Abstract: Various embodiments of the invention allow for rapid communication in virtual link trunking (VLT) networks in which network traffic flows over not all-homed VLT peer devices, while honoring Equal Cost Multi Path (ECMP) decisions and normal route decisions about next hops. Traffic flow is made deterministic and free of sub-optimal paths that otherwise cause unnecessary traffic over inter-node links in the VLT domain. In embodiments, this is accomplished by using receiving VLAN interface-IP addresses from VLT devices in order to create and use a sub-LAG egress table from which sets of ports that lead to intended VLT devices are derived. In embodiments, instead of a VLAN interface-IP addresses a routing MAC address is used when forming the sub-LAG.

Abstract translation: 本发明的各种实施例允许在虚拟链路中继（VLT）网络中的快速通信，其中网络业务流过并非全部归属的VLT对等设备，同时遵守等成本多路径（ECMP）决策和关于下一跳的正常路由决定。 业务流被确定并且没有子优化路径，否则会导致在VLT域中的节点间链路上的不必要的流量。 在实施例中，这是通过使用来自VLT设备的接收VLAN接口-IP地址来实现的，以便创建并使用从其导出到目的VLT设备的端口组的子LAG出口表。 在实施例中，代替VLAN接口-IP地址，当形成子LAG时使用路由MAC地址。

公开(公告)号：US09350619B2

公开(公告)日：2016-05-24

申请号：US14198602

申请日：2014-03-06

Applicant: DELL PRODUCTS, L.P.

Inventor： Pathangi Janardhanan ,  Shivakumar Sundaram ,  Avinash Natarajan

IPC: H04L12/24

Abstract: Aspects of the present invention include an arbitrary N-Node virtual link trunking (VLT) system comprising a set of N nodes collectively provide a logical fabric-level view that is consistent across the set of N nodes. Embodiments of the arbitrary N-Node VLT system comprise a control plane mechanism to provide Layer 2 multipathing between access network devices (switches or servers) and the core network. The N-Node VLT system provides a loop-free topology with active-active load-sharing of uplinks from access to the core. Accordingly, the N-Node VLT system eliminates the disadvantage of Spanning Tree Protocol (STP) (active-standby links) by allowing link aggregation group (LAG) terminations on multiple separate distribution or core switches and also supporting a loop-free topology. Additional benefits of an N-Node VLT system include, but are not limited to, higher resiliency, improved link utilization, and improved manageability of the network.

公开(公告)号：US09154408B2

公开(公告)日：2015-10-06

申请号：US13777301

申请日：2013-02-26

Applicant: Dell Products L.P.

Inventor： Ramasubramani Mahadevan ,  Pathangi Narasimhan Janardhanan ,  Avinash Natarajan

IPC: H04L12/26 ,  H04L12/703 ,  H04L29/14 ,  H04L12/707 ,  H04L12/709

CPC classification number: H04L45/28 ,  H04L45/22 ,  H04L45/245 ,  H04L49/00 ,  H04L69/40

Abstract: A system and method for traffic polarization during failures includes a communication network cluster including a first network switching unit configured to communicate with a first network node via a first network link and a second network node via a second network link, a second network switching unit configured to communicate with the first network node via a third network link and the second network node via a fourth network link, and a first intra-cluster link coupling the first network switching unit to the second network switching unit. The second network switching unit is further configured to respond to a failure in the fourth network link by broadcasting a route withdrawal message to the first network switching unit and the first network node. The first network switching unit is configured to accept rerouted network traffic from the first network node via the first network link resulting from the route withdrawal message.

Abstract translation: 用于故障期间的交通偏振的系统和方法包括：通信网络集群，包括：第一网络交换单元，被配置为经由第一网络链路与第一网络节点通信，并且经由第二网络链路与第二网络节点进行通信;第二网络交换单元， 经由第三网络链路和第二网络节点经由第四网络链路与第一网络节点通信，以及将第一网络交换单元耦合到第二网络交换单元的第一集群内链路。 第二网络交换单元还被配置为通过向第一网络交换单元和第一网络节点广播路由提取消息来响应第四网络链路中的故障。 第一网络交换单元被配置为经由由路由提取消息产生的第一网络链接接受来自第一网络节点的重新路由的网络业务。

公开(公告)号：US20140219081A1

公开(公告)日：2014-08-07

申请号：US13758884

申请日：2013-02-04

Applicant: DELL PRODUCTS L.P.

Inventor： Avinash Natarajan ,  Ramasubramani Mahadevan

IPC: H04L12/24

CPC classification number: H04L41/0659 ,  H04L12/44 ,  H04L12/4641 ,  H04L12/56 ,  H04L45/245 ,  H04L45/28 ,  H04L45/66 ,  Y02D30/30

Abstract: An information handling system is provided. The information handling system includes a first network switch configurable, the first network switch having a computer processor in communication with a plurality of ports for receiving and sending frames and a memory coupled to the computer processor and including a media access control (MAC) address table. The computer processor is configured to read frames, each frame having a header, and is also configured to associate a MAC address with a parent link aggregation group (LAG) except while a downstream link failure is detected. The computer processor is configured to associate the MAC address with a sub-LAG while a downstream link failure is detected. Methods for directing traffic through a virtual link trunking (VLT) domain during failure of a downstream link are also provided.

Abstract translation: 提供信息处理系统。 所述信息处理系统包括可配置的第一网络交换机，所述第一网络交换机具有与用于接收和发送帧的多个端口通信的计算机处理器和耦合到所述计算机处理器的存储器，并且包括媒体访问控制（MAC）地址表 。 计算机处理器被配置为读取帧，每帧具有报头，并且还被配置为除了检测到下游链路故障之外，将MAC地址与父链路聚合组（LAG）相关联。 计算机处理器被配置为在检测到下游链路故障时将MAC地址与子LAG相关联。 还提供了在下游链路故障期间通过虚拟链路中继（VLT）域引导业务的方法。

公开(公告)号：US11606335B2

公开(公告)日：2023-03-14

申请号：US16401645

申请日：2019-05-02

Applicant: DELL PRODUCTS L.P.

Inventor： Sudharsan Dhamal Gopalarathnam ,  Avinash Natarajan

IPC: H04L29/06 ,  H04L9/40 ,  H04L12/46

Abstract: Access control systems and methods herein successfully overcome ACL group width limitations of existing designs by splitting an ACL group across different units, e.g., to create two ACL groups that each has a relatively smaller width. In embodiments, availability of ACL space is increased by hierarchically splitting an ACL table to fit into different two coupled devices and modifying certain fields carrying metadata in packets that are exchanged between the devices, such that one chipset may carry information about the lookup of another. In embodiments, an ACL group for a port extender is created by selectively creating a sub-group with qualifiers that fit within an available group width, and moving the remaining qualifiers to a controlling bridge to achieve the desired functionality.

公开(公告)号：US10476797B2

公开(公告)日：2019-11-12

申请号：US14685369

申请日：2015-04-13

Applicant: DELL PRODUCTS L.P.

Inventor： Avinash Natarajan ,  Ramasubramani Mahadevan

IPC: H04L12/911 ,  H04L12/743 ,  H04L12/741 ,  H04L12/46 ,  H04L12/28 ,  H04L12/709 ,  H04L12/707

Abstract: Various embodiments of the invention allow for rapid communication in virtual link trunking (VLT) networks in which network traffic flows over not all-homed VLT peer devices, while honoring Equal Cost Multi Path (ECMP) decisions and normal route decisions about next hops. Traffic flow is made deterministic and free of sub-optimal paths that otherwise cause unnecessary traffic over inter-node links in the VLT domain. In embodiments, this is accomplished by using receiving VLAN interface-IP addresses from VLT devices in order to create and use a sub-LAG egress table from which sets of ports that lead to intended VLT devices are derived. In embodiments, instead of a VLAN interface-IP addresses a routing MAC address is used when forming the sub-LAG.