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公开(公告)号：US10212068B2
公开(公告)日：2019-02-19
申请号：US15417004
申请日：2017-01-26
Applicant: DELL PRODUCTS L.P.
Inventor： Ramasubramani Mahadevan , Shivakumar Sundaram
IPC: H04L12/18 , H04L12/721 , H04L12/761 , H04L12/705
Abstract: A method of routing traffic for multi-cast routing through a node of a network that utilizes loop-free alternative paths is presented. The method includes receiving a join in the node from a second node in the network on a shortest path between the node and the second node; retrieving loop-free alternative paths to the second node; and adding an entry to a multi-cast routing table at the node that is based on a group that includes the shortest path to the second node and the loop-free alternative paths to the second node as cost equivalent paths.
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22.发明授权
公开(公告)号：US09742663B2
公开(公告)日：2017-08-22
申请号：US15171698
申请日：2016-06-02
Applicant: Dell Products L.P.
IPC: G06F15/16 , H04L12/707 , H04L12/24 , H04L12/709 , H04L29/08
CPC classification number: H04L45/22 , H04L41/0663 , H04L41/0672 , H04L41/12 , H04L45/245 , H04L67/10 , H04L67/16 , Y02D30/30 , Y02D50/30
Abstract: An information handling system is provided. The information handling system includes a plurality of aggregation devices configured to distribute information in a virtual link trunk and a plurality of nodes coupled to the aggregation devices. When one of the plurality of aggregation devices received a reboot command, that aggregation device is configured to transmit a first message to the nodes indicating that the aggregation device is rebooting, receive a first acknowledgement message from the nodes indicating that they will not send any information to the rebooting aggregation device. The aggregation device is then configured to reboot, receive a second message from the nodes indicating the nodes are ready to receive information from the rebooted aggregation device, transmit a second acknowledgement message to the nodes indicating that the rebooted aggregation device has rebooted and is capable of receiving information, and receive information from at least one of the nodes for transmission to at least one other node.
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公开(公告)号：US09455920B2
公开(公告)日：2016-09-27
申请号：US14456129
申请日：2014-08-11
Applicant: DELL PRODUCTS L.P.
IPC: H04L1/00 , H04L12/801 , H04L12/741 , H04L12/721
Abstract: Embodiments of the present invention include systems and methods for preventing traffic loss of data directed to a destination in a network. A router in the network attempts to install a route prefix of a destination or an ARP entry in the router. If the attempt fails, the router determines whether the routing device originates the uninstalled route prefix or a set of route prefixes pointing the uninstalled ARP entry as next hop in an internet protocol (IP) reachability. If the determination is negative, the router sends a message to a neighboring router to add the router to the exclude route list of the neighboring router. When the neighboring router determines an optimal route involving the uninstalled route prefix or the set of route prefixes pointing the uninstalled ARP entry, it looks up the exclude route list so that the router is not included when determining the optimal route.
Abstract translation: 本发明的实施例包括用于防止指向网络中的目的地的数据的业务流量丢失的系统和方法。 网络中的路由器尝试在路由器中安装目的地或ARP表项的路由前缀。 如果尝试失败，则路由器确定路由设备是否发起卸载的路由前缀，或者指定卸载的ARP条目作为Internet协议（IP）可达性中的下一跳的一组路由前缀。 如果确定为否定，则路由器向相邻路由器发送消息，将路由器添加到相邻路由器的排除路由列表。 当相邻路由器确定涉及卸载路由前缀的最佳路由或指向卸载的ARP表项的路由前缀集时，将查找排除路由列表，以便在确定最优路由时不包括路由器。
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24.发明申请SYSTEM AND METHOD FOR REDUCING INFORMATION LOSS IN AN AGGREGATED INFORMATION HANDLING SYSTEM 有权用于减少信号处理信息处理系统中的信息丢失的系统和方法
公开(公告)号：US20150236949A1
公开(公告)日：2015-08-20
申请号：US14703657
申请日：2015-05-04
Applicant: DELL PRODUCTS L.P.
IPC: H04L12/707 , H04L29/08
CPC classification number: H04L45/22 , H04L41/0663 , H04L41/0672 , H04L41/12 , H04L45/245 , H04L67/10 , H04L67/16 , Y02D30/30 , Y02D50/30
Abstract: An information handling system is provided. The information handling system includes a plurality of aggregation devices configured to distribute information in a virtual link trunk and a plurality of nodes coupled to the aggregation devices. When one of the plurality of aggregation devices received a reboot command, that aggregation device is configured to transmit a first message to the nodes indicating that the aggregation device is rebooting, receive a first acknowledgement message from the nodes indicating that they will not send any information to the rebooting aggregation device. The aggregation device is then configured to reboot, receive a second message from the nodes indicating the nodes are ready to receive information from the rebooted aggregation device, transmit a second acknowledgement message to the nodes indicating that the rebooted aggregation device has rebooted and is capable of receiving information, and receive information from at least one of the nodes for transmission to at least one other node.
Abstract translation: 提供信息处理系统。 信息处理系统包括：多个聚合装置，被配置为在虚拟链路中继分配信息;以及多个节点，耦合到聚合装置。 当多个聚合装置中的一个接收到重新启动命令时，该聚合装置被配置为向节点发送指示聚合装置正在重新启动的第一消息，从节点接收指示它们不会发送任何信息的第一确认消息 到重新启动汇聚设备。 然后将聚合设备重新引导，从节点接收指示节点准备好从重新引导的聚合设备接收信息的第二消息，向节点发送指示重新启动的聚合设备已经重新启动并且能够 接收信息，以及从至少一个节点接收信息以传输到至少一个其他节点。
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公开(公告)号：US20140241146A1
公开(公告)日：2014-08-28
申请号：US13777301
申请日：2013-02-26
Applicant: DELL PRODUCTS L.P.
IPC: H04L12/24
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。
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公开(公告)号：US20210306251A1
公开(公告)日：2021-09-30
申请号：US16902898
申请日：2020-06-16
Applicant: Dell Products L.P.
Inventor： Ramasubramani Mahadevan , Senthil Nathan Muthukaruppan
IPC: H04L12/761 , H04L12/709 , H04L12/713 , H04L29/12 , H04L12/931
Abstract: An aggregated BIER networking system includes first and second aggregated BFER devices that are each directly connected to first and second receiver devices. The first aggregated BFER device receives a request from the first receiver device for multicast data packets generated by a source device and transmits the request to a BFIR device. The first aggregated BFER device also receives an identification from the second aggregated BFER device of the second receiver device that has requested multicast data packets generated by the source device. The first aggregated BFER device advertises a virtual BFER device that appears to be directly connected to each of the first and second aggregated BFER devices, and each of the first and second receiver devices. The first aggregated BFER device then receives a multicast data packet identifying the virtual BFER device, and forwards the multicast data packet to each of the first and second receiver devices.
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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.
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28.发明授权
公开(公告)号：US10122615B2
公开(公告)日：2018-11-06
申请号：US15376966
申请日：2016-12-13
Applicant: DELL PRODUCTS L.P.
Inventor： Ramasubramani Mahadevan , Pathangi N. Janardhanan
IPC: H04L12/761 , H04L12/18 , H04L12/741
Abstract: A switch (110R.3) uses a forwarding database (140F) to forward multicast packets. The switch participates in a multicast protocol (e.g. PIM) with other switches, and also uses a snooping database (e.g. for IGMP snooping) to learn about local group members, i.e. members for which the router serves as a local multicast router (e.g. the local members do not participate in the multicast protocol). When the switch learns of a local member of a multicast group, the switch updates the snooping database but may or may not install the snooping information in the forwarding database. Thus, the forwarding database is not necessarily provisioned for locally sourced data packets addressed to the group until receipt of a locally sourced data packet addressed to the group. If no such packets are received, the forwarding database is not provisioned for such packets, and therefore its size is reduced. Other features are also provided.
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公开(公告)号：US09847931B2
公开(公告)日：2017-12-19
申请号：US14920688
申请日：2015-10-22
Applicant: DELL PRODUCTS L.P.
Inventor： Ramasubramani Mahadevan , Pathangi N. Janardhanan
IPC: H04L12/28 , H04L12/761 , H04L12/18 , H04L12/709 , H04L12/741 , H04J1/16
CPC classification number: H04L45/16 , H04L12/1886 , H04L45/245 , H04L45/54 , Y02D50/30
Abstract: Each router in a group of routers (110R.2, 110R.3) includes an interface (P4) assigned a common virtual address for multicast (VAM). The common VAM is advertised in router advertisings for multicast traffic; other addresses are advertised for unicast. The member routers in the group share multicast forwarding databases. Increased throughput is therefore provided for multicast traffic without traffic replication. Any router in the group can service requests from end-point sources and receivers of multicast traffic, e.g. requests to join or leave a multicast group, or requests presented as multicast packets for forwarding to a multicast group.
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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.
