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公开(公告)号：US20250141576A1
公开(公告)日：2025-05-01
申请号：US18533718
申请日：2023-12-08
Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP
IPC: H04J3/06
Abstract: In some examples, a first network device including a first time clock sends, over a first network path, a first timing message of a time synchronization process to synchronize the first time clock and a second time clock that is connected to a second network device. The first network device receives an indication associated with a second timing message of the time synchronization process, where the second timing message is to be sent from the second time clock. Based on receiving the indication, the first network device sends a first join message to a first intermediate network device that is part of the first network path, and a second join message to a second intermediate network device that is part of a second network path different from the first network path. The first network device receives, over the first network path, the second timing message sent by the second time clock, the second timing message communicated over the first network path based on the forwarding information built in the first intermediate network device and the second network device.
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公开(公告)号：US20240243993A1
公开(公告)日：2024-07-18
申请号：US18154094
申请日：2023-01-13
Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP
Abstract: A resource optimization processor is disclosed for inclusion in peer routers. The resource optimization processor performs a method for resource optimization of the routers. The method includes disabling an inter-switch link (ISL) between peer routers and monitoring downstream links between a primary router and downstream devices connected to the primary router. The method further includes identifying a failure of at least one downstream link and enabling the ISL between the first router and the second router for the failed downstream link upon identification of the failure.
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公开(公告)号：US20220345326A1
公开(公告)日：2022-10-27
申请号：US17364173
申请日：2021-06-30
Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP
IPC: H04L12/18
Abstract: Some examples relate to selection of a rendezvous point in an IP multicast network managing multicast group traffic. An example includes transmitting, from a controller in a cloud computing system, messages to a source device and a host device in an IP multicast-capable network, which may include two peer network devices that are virtualized to function as one virtual device. Based on the response to the messages, the controller may determine that the source device is present in OSI layer 3 and the host device is present in OSI layer 2. The controller may determine that the peer network are located downstream in relation to the determined layer of the source device. The controller may select a non-peer network device as a rendezvous point in the IP multicast-capable network. Further to the selection, the controller may synchronize an active-active configuration between the peer network devices.
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公开(公告)号：US20230126874A1
公开(公告)日：2023-04-27
申请号：US17507474
申请日：2021-10-21
Applicant: Hewlett Packard Enterprise Development LP
Inventor： Tathagata Nandy , Chethan Chavadibagilu Radhakrishnabhat , Priyam De
IPC: H04N21/238 , H04N21/25
Abstract: One aspect of the instant application facilitates reduction of multicast group join latency. During operation, the system can receive, at a network device, a first multicast group leave packet corresponding to a first multicast group. In response to receiving a first multicast group leave packet from an IPTV client, the system can simulate a second multicast group join on behalf of the IPTV client by updating, based on a predictive model, at least an entry in a table maintained in hardware with a next likely multicast group that the IPTV client is likely to join; and sending a simulated second multicast group join packet for initiating an IPTV stream associated with the next likely multicast group. In response to receiving an actual second multicast group join packet from the IPTV client, the system can facilitate the IPTV stream to the IPTV client, thereby reducing multicast group join latency.
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5.发明申请公开(公告)号：US20230099633A1
公开(公告)日：2023-03-30
申请号：US17491326
申请日：2021-09-30
Applicant: Hewlett Packard Enterprise Development LP
IPC: H04L12/18 , H04L12/715 , H04L12/46 , H04L12/66
Abstract: A system for multicast traffic management in an overlay tunnel fabric is provided. The system can operate a first switch and a second switch of the fabric as part of a virtual switch. The virtual switch can operate as a gateway for the fabric. The system can efficiently deploy a rendezvous point (RP) for a multicast group at the first switch. During operation, the system can determine whether to synchronize a registration packet associated with the multicast group with the second switch based on a type of a first ingress connection associated with the registration packet. The system can then determine whether to receive subsequent registration packets for the multicast group based on the type of the first ingress connection and reception of a join request for the multicast group. The type of a respective connection indicates whether the connection includes an overlay tunnel.
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Patent Agency Ranking
公开(公告)号：US10742431B2
公开(公告)日：2020-08-11
申请号：US16118833
申请日：2018-08-31
Applicant: Hewlett Packard Enterprise Development LP
Abstract: Examples herein are directed to centralized database based multicast converging. For instance, in various examples centralized database based multicast converging can include starting a restart timer having a value greater than a time to validate stored entries in a centralized database, sending data packets at least to hosts on the network corresponding to the stored entries in the centralized database to maintain service to the hosts while the restart timer is running, sending query packets to validate a host corresponding to an entry of the stored entries in the centralized database, and responsive to the restart timer expiring, sending data packets to a converged group of hosts including at least the validated host.
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公开(公告)号：US11546184B2
公开(公告)日：2023-01-03
申请号：US17364173
申请日：2021-06-30
Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP
IPC: H04L12/18
Abstract: Some examples relate to selection of a rendezvous point in an IP multicast network managing multicast group traffic. An example includes transmitting, from a controller in a cloud computing system, messages to a source device and a host device in an IP multicast-capable network, which may include two peer network devices that are virtualized to function as one virtual device. Based on the response to the messages, the controller may determine that the source device is present in OSI layer 3 and the host device is present in OSI layer 2. The controller may determine that the peer network are located downstream in relation to the determined layer of the source device. The controller may select a non-peer network device as a rendezvous point in the IP multicast-capable network. Further to the selection, the controller may synchronize an active-active configuration between the peer network devices.
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公开(公告)号：US20220400086A1
公开(公告)日：2022-12-15
申请号：US17346933
申请日：2021-06-14
Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP
IPC: H04L12/927 , H04L12/813 , H04L12/24 , H04L12/18
Abstract: Systems are methods are described for predicting and forecasting a resource utilization on network device, particularly for handling multicast flows, by monitoring past resource consumption patterns. A system can include a plurality of multicast clients coupled to a network; and a network device coupled to the network. The network device may be a switch or a router that directs multicast traffic to the plurality of multicast clients. The network device can include a flow prediction controller that determines one or more real-time predictions relating to a demand of the network based on an analysis of an artificial intelligence (AI) forecasting model, such as an Autoregressive Integrated Moving Average (ARIMA) model. Also, the network device can include a resource optimizer that performs a resource management action that optimizes the resources of the network device based on the one or more real-time predictions of the demand of the network and a policy.
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公开(公告)号：US20190068387A1
公开(公告)日：2019-02-28
申请号：US16118833
申请日：2018-08-31
Applicant: Hewlett Packard Enterprise Development LP
CPC classification number: H04L12/18 , G06F16/252 , G06F16/27 , H04L12/1881
Abstract: Examples herein are directed to centralized database based multicast converging. For instance, in various examples centralized database based multicast converging can include starting a restart timer having a value greater than a time to validate stored entries in a centralized database, sending data packets at least to hosts on the network corresponding to the stored entries in the centralized database to maintain service to the hosts while the restart timer is running, sending query packets to validate a host corresponding to an entry of the stored entries in the centralized database, and responsive to the restart timer expiring, sending data packets to a converged group of hosts including at least the validated host.
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公开(公告)号：US20240223348A1
公开(公告)日：2024-07-04
申请号：US18093253
申请日：2023-01-04
Applicant: Hewlett Packard Enterprise Development LP
CPC classification number: H04L7/0012 , H04L45/16
Abstract: A system for providing fast multicast convergence for Precision Time Protocol (PTP) at a switch is provided. During operation, the system can receive a multicast control message based on a multicast protocol used for PTP from a respective neighbor switch. The multicast control message can indicate neighbor information associated with the multicast protocol. The system can then determine a role associated with the PTP for a remote switch from the control message. Upon receiving a register message for a multicast group associated with the PTP, the system can determine whether a multicast path from the switch to a PTP source includes a device with a role of a boundary clock (BC) of PTP. If the multicast path includes a device with a role of a BC, the system can send a gratuitous register-stop message for the multicast group toward the PTP source in absence of a native path.
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