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公开(公告)号：US20200021450A1
公开(公告)日：2020-01-16
申请号：US16031256
申请日：2018-07-10
Applicant: Hewlett Packard Enterprise Development LP
Inventor： Tathagata Nandy , Balaji Sankaran , Tinoj Joseph
Abstract: Some examples relate to managing multicast scaling. In an example, a determination may be made at a network device whether more than a pre-defined percentage of ports of a virtual LAN (VLAN) are associated with an IP multicast group. In response to the determination that more than a pre-defined percentage of ports on the VLAN are associated with the IP multicast group, a flood filter may be programmed on the network device for the VLAN. A hardware filter previously associated with the IP multicast group may be disassociated.
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公开(公告)号：US20190334810A1
公开(公告)日：2019-10-31
申请号：US15961977
申请日：2018-04-25
Applicant: Hewlett Packard Enterprise Development LP
Inventor： Tathagata Nandy , Gopalakrishna Tellapalli
IPC: H04L12/703 , H04L12/18 , H04L12/717 , H04L12/24 , H04L12/931
Abstract: Examples include receiving a recovery signal and access data stored in a centralized database of a networking device in response to the recovery signal. The data may include information associated to past multicast flow events. Additionally, examples include determining a rebuilt multicast flow event based on the data, generating a multicast protocol packet based on the multicast flow event, and sending the multicast protocol packet to a multicast protocol in the networking device.
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公开(公告)号：US20190238569A1
公开(公告)日：2019-08-01
申请号：US15953420
申请日：2018-04-14
Applicant: Hewlett Packard Enterprise Development LP
Inventor： Tathagata Nandy , Vijay Kannan , Saheli Ganguly
IPC: H04L29/06 , H04L12/927 , H04L12/931
CPC classification number: H04L63/1416 , H04L47/806 , H04L49/201 , H04L63/1425 , H04L63/1441 , H04L63/20 , H04L69/325
Abstract: In some examples, a network device includes an interface, and a processor to apply a restriction on multicast communication associated with an entity on the interface. The restriction on multicast communication includes detecting, on the interface, a multicast communication pattern associated with the entity, indicating, based on the multicast communication pattern on the interface violating a threshold, that the entity is malicious, and blocking processing of the multicast communication associated with the entity in response to indicating that the entity is malicious.
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公开(公告)号：US20180241674A1
公开(公告)日：2018-08-23
申请号：US15497282
申请日：2017-04-26
Applicant: Hewlett Packard Enterprise Development LP
Inventor： Sankaran Balaji , Tathagata Nandy , Nilay Tripathi , Saheli Ganguly
IPC: H04L12/801 , H04L12/721 , H04L12/26 , H04L29/08 , H04L12/18
CPC classification number: H04L47/12 , H04L43/028 , H04L43/10 , H04L45/26 , H04L67/16 , H04L67/2842
Abstract: Examples relate to selectively processing network packets. In one example, a computing device may receive, by the networking device, a network packet from a user device operating on the network; determine that the network packet is a search packet, the search packet specifying a particular service associated with a server device; provide a network controller with a query for the particular service; receive, from the network controller, an indication that the particular service is not provided by server devices operating on the network; and determine, based on the receipt of the indication, not to process the search packet.
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公开(公告)号：US12284056B2
公开(公告)日：2025-04-22
申请号：US18067813
申请日：2022-12-19
Applicant: Hewlett Packard Enterprise Development LP
Inventor： Tathagata Nandy , Venkatavaradhan Devarajan
Abstract: In an example, a network device may receive, from a client device, a multicast query for a service advertised by a host device connected to another network device. The network device is configured as a first Virtual tunnel endpoint (VTEP) and the other network device is configured as a second VTEP in an overlay network. The network device may determine whether a host name, of the host device, corresponding to the service name in the multicast query is present in a resource record. In response to determining that the host name is present in the resource record, the network device may identify, from the resource record, an overlay network path corresponding to the host name. The network device may encapsulate the multicast query based on an overlay encapsulation protocol implemented at the first VTEP and route, the encapsulated multicast query, via the overlay network path, to the host device.
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Patent Agency Ranking
公开(公告)号：US20250106062A1
公开(公告)日：2025-03-27
申请号：US18473938
申请日：2023-09-25
Applicant: Hewlett Packard Enterprise Development LP
Inventor： Tathagata Nandy , Subramanian Muthukumar , Priyam De
IPC: H04L12/18
Abstract: One aspect can provide a system and method for selective data forwarding in a multicast network. During operation, a querier router in the multicast network receives, at a first port of, a query-response packet from a network device in response to an all-host query sent by the querier router and add the first port to a port list comprising a number of ports coupled to non-querier devices in the multicast network. In response to receiving a multicast-join message, the querier router can forward the multicast-join message to the ports on the port list comprising the first port except for a port that receives the multicast-join message. Forwarding the multicast-join message to the first port causes the multicast-join message to be received at a second port of a layer-2 switch, which allows the layer-2 switch to forward unknown multicast data packets to the querier device via the second port.
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公开(公告)号：US12107857B2
公开(公告)日：2024-10-01
申请号：US18103341
申请日：2023-01-30
Applicant: Hewlett Packard Enterprise Development LP
Inventor： Vinayak Joshi , Tathagata Nandy
Abstract: A system for enforcement of a set of segmentation policies at a gateway switch of a network is provided. Here, the segmentation policies can indicate which other roles are allowed to communicate with a respective role, which can indicate a set of privileges in the network. During operation, the switch can receive a first message associated with a join request for a multicast group from a host. The switch can also receive a second message comprising data from a source of the multicast group. The first and second messages can indicate first and second roles, respectively, of the host and source. Based on the first and second roles and a corresponding segmentation policy, the system can determine whether the host is allowed to receive the data from the source. If not allowed, the system can prevent the second message from being forwarded to the host from the gateway switch.
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公开(公告)号：US20240305494A1
公开(公告)日：2024-09-12
申请号：US18117868
申请日：2023-03-06
Applicant: Hewlett Packard Enterprise Development LP
Inventor： Tathagata Nandy , Anil Raj , Subramanian Muthukumar
CPC classification number: H04L12/185 , H04L49/90
Abstract: A system for facilitating efficient multicast programming in a switch is provided. During operation, the system can parse a multicast data structure that can map an ingress interface, a source, and a multicast group to a set of egress interfaces. Based on the data structure, the system can generate a cache that can map an egress interface to an ingress interface indicated in the data structure. Upon receiving a join request via a first interface, the system can look up the first interface in the cache. If the first interface matches a cache entry, the system can identify an ingress interface from the cache entry. The system can then program, in the data structure, a route entry with the first interface as an egress interface and the ingress interface. Subsequently, if a multicast data packet matches the route entry, the system can forward the packet via the first interface.
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公开(公告)号：US20240205048A1
公开(公告)日：2024-06-20
申请号：US18067813
申请日：2022-12-19
Applicant: Hewlett Packard Enterprise Development LP
Inventor： Tathagata Nandy , Venkatavaradhan Devarajan
CPC classification number: H04L12/4633 , H04L12/185 , H04L45/26 , H04L45/66
Abstract: In an example, a network device may receive, from a client device, a multicast query for a service advertised by a host device connected to another network device. The network device is configured as a first Virtual tunnel endpoint (VTEP) and the other network device is configured as a second VTEP in an overlay network. The network device may determine whether a host name, of the host device, corresponding to the service name in the multicast query is present in a resource record. In response to determining that the host name is present in the resource record, the network device may identify, from the resource record, an overlay network path corresponding to the host name. The network device may encapsulate the multicast query based on an overlay encapsulation protocol implemented at the first VTEP and route, the encapsulated multicast query, via the overlay network path, to the host device.
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公开(公告)号：US11743693B2
公开(公告)日：2023-08-29
申请号：US17374422
申请日：2021-07-13
Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP
Inventor： Vinayak Joshi , Tathagata Nandy , Venkatavaradhan Devarajan , Saumya Dikshit
CPC classification number: H04W4/08 , H04L45/16 , H04L45/66 , H04W36/18 , H04L12/189 , H04W84/12 , H04W88/08
Abstract: In an example, a wired network device receives a first join message originating from a client device associated with a first wireless access point (WAP) connected to another wired network device in a broadcast domain. An entry corresponding to the client device is created in a remote receiver record of the wired network device. In response to the client device transitioning from the first WAP to a second WAP connected to the wired network device, it is determined that the client device is locally connected to the wired network device. Intention of the client device to receive multicast traffic is identified. A second join message directed to the network address of the multicast group and distributed in the broadcast domain. A traffic flow path for the multicast traffic via the wired network device and the second WAP to the client device is configured.
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