公开(公告)号：US20230318961A1

公开(公告)日：2023-10-05

申请号：US17712342

申请日：2022-04-04

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Venkatavaradhan Devarajan ,  Vinayak Joshi

IPC: H04L45/02 ,  H04L12/46 ,  H04L45/00 ,  H04L9/40

CPC classification number: H04L45/02 ,  H04L12/4641 ,  H04L63/105 ,  H04L63/08 ,  H04L45/04

Abstract: In an example, a switch may receive an authentication request from a host associated with a first wireless access point (WAP) connected to the switch. The switch acts as a VXLAN Tunnel Endpoint (VTEP) in a Border Gateway Protocol (BGP) Ethernet Virtual Private Network (EVPN) based Virtual Extensible Local Area Network (VXLAN). The switch forwards the authentication request to an authentication server and on successful authentication of the host, may associate a role information with the host based on an authentication response from the authentication server. Further, the switch may create a BGP extended community field carrying the role identifier indicative of network policies to be implemented for the host and attach the BGP extended community field with a route advertisement. The switch then sends the route advertisement to another switch. The another switch is configured as a peer VTEP in the VXLAN. The switch and the another switch is configured in a single Virtual Local Area Network (VLAN).

公开(公告)号：US11681519B2

公开(公告)日：2023-06-20

申请号：US17034651

申请日：2020-09-28

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Mamata Hegde ,  Venkatavaradhan Devarajan ,  Jagmeet Singh Hanspal

IPC: G06F8/656 ,  H04L45/00 ,  G06F9/4401 ,  G06F16/23 ,  G06F16/22

CPC classification number: G06F8/656 ,  G06F9/4416 ,  G06F16/2282 ,  G06F16/2379 ,  H04L45/22

Abstract: Examples disclosed herein relate to performing a software update on a network device forming a MC-LAG. In an example, a software update onto a first network device and a second network device may be downloaded. The first network device and the second network device may form a MC-LAG that may provide a redundant connectivity to a network device in a network. A shutdown of routing protocols on the first network device may be performed. Each of the routing protocols may advertise a maximum metric on the first network device, leading to a recalculation of network routes by the network device. The first network device may be updated with the software update. Until the software update on the first network device is complete, network traffic on the network may be routed through the second network device.

公开(公告)号：US11671282B2

公开(公告)日：2023-06-06

申请号：US17328485

申请日：2021-05-24

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Vinayak Joshi ,  Venkatavaradhan Devarajan ,  Rajib Majila

IPC: H04L12/46

CPC classification number: H04L12/4641 ,  H04L12/4633

Abstract: A system for dynamically activating a virtual network is provided. During operation, the system can operate a switch as a tunnel endpoint of a tunnel in conjunction with a remote switch. The tunnel can facilitate a virtual private network (VPN) spanning the switch and the remote switch. The system can maintain an inactive state for a virtual local area network (VLAN) and a corresponding tunnel network identifier identifying the VLAN for the tunnel. If a notification indicating the activation of the VLAN at a downstream switch is received by the switch, the system can activate the VLAN at the switch. The system can then activate the tunnel network identifier in a routing process of the VPN, thereby enabling sharing of a media access control (MAC) address associated with the VLAN via the tunnel.

公开(公告)号：US20230069306A1

公开(公告)日：2023-03-02

申请号：US17411875

申请日：2021-08-25

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Rajib Majila ,  Venkatavaradhan Devarajan ,  Vinayak Joshi ,  Ram lakhan Patel

IPC: H04L12/761 ,  H04L12/717 ,  H04L12/725 ,  H04L12/46

Abstract: A system for policy management in a switch is provided. During operation, the system can generate, from a first policy defined for the switch, a second policy. The first policy can indicate whether a type of traffic is allowed from a source role to a destination role via an overlay tunnel. The second policy can indicate a plurality of destination roles that are allowed to receive multi-destination packets of the type of traffic from the source role via the overlay tunnel. Upon identifying a host associated with a role at a port of the switch, the system can determine whether the role belongs to the plurality of destination roles based on the second policy. If the role belongs to the plurality of allowed destination roles, the system can allow the port to forward a multi-destination packet, which is received via the overlay tunnel and associated with the type of traffic.

公开(公告)号：US20220376950A1

公开(公告)日：2022-11-24

申请号：US17328485

申请日：2021-05-24

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Vinayak Joshi ,  Venkatavaradhan Devarajan ,  Rajib Majila

IPC: H04L12/46

Abstract: A system for dynamically activating a virtual network is provided. During operation, the system can operate a switch as a tunnel endpoint of a tunnel in conjunction with a remote switch. The tunnel can facilitate a virtual private network (VPN) spanning the switch and the remote switch. The system can maintain an inactive state for a virtual local area network (VLAN) and a corresponding tunnel network identifier identifying the VLAN for the tunnel. If a notification indicating the activation of the VLAN at a downstream switch is received by the switch, the system can activate the VLAN at the switch. The system can then activate the tunnel network identifier in a routing process of the VPN, thereby enabling sharing of a media access control (MAC) address associated with the VLAN via the tunnel.

公开(公告)号：US11212164B2

公开(公告)日：2021-12-28

申请号：US16850526

申请日：2020-04-16

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Tathagata Nandy ,  Venkatavaradhan Devarajan ,  Prasad Moola Mangalam ,  Viswanath Reddy Bayapureddy

IPC: G06F11/00 ,  H04L12/24 ,  H04L12/18 ,  H04L12/437 ,  H04L12/46

Abstract: Examples disclosed herein relate to a method comprising determining, at a first node, that a first Ethernet Ring Protection Switching (ERPS) port of the first node is down, wherein the first node belongs to a plurality of network nodes connected in a ring topology to form an access network. The method includes determining, at the first node, that the first ERPS port is a querier port, wherein the first ERPS port is paired with a second ERPS port of the first node and marking the second ERPS port as the querier port of the first node. The method includes transmitting, by the first node, an IGMP join message to a device part of a multicast implementation, wherein the multicast implementation covers at least the ring topology.

公开(公告)号：US20210328829A1

公开(公告)日：2021-10-21

申请号：US17221807

申请日：2021-04-04

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Sivasankaran Nagarajan ,  Yasser Salim Sait ,  Venkatavaradhan Devarajan

IPC: H04L12/423 ,  H04L12/46 ,  H04L12/437 ,  H04L29/12 ,  H04L12/741 ,  H04L12/24

Abstract: Examples disclosed herein relate to managing a second ring link failure in a multi-ring Ethernet network. In an example, an inter-connection network node in a multi-ring Ethernet network comprising a major ring and a sub-ring may propagate a signal failure (SF) event, received in response to a second ring link failure in the major ring, to one or more nodes in the sub-ring. In response to receiving the SF event, a Ring Protection Link (RPL) on the sub-ring may be unlocked to allow network traffic through the RPL and avoid loop formation on the multi-ring Ethernet network. The sub-ring may be moved to the ring protection switching state; including performing a filtering database (FDB) flush at every node on the multi-ring Ethernet network whereby all MAC addresses and related port associations for traffic forwarding are cleared from the FDB.

公开(公告)号：US10257869B2

公开(公告)日：2019-04-09

申请号：US15501798

申请日：2014-10-29

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Celestian K. Sebastian ,  Anil Raj ,  Subin Cyriac Mathew ,  Venkatavaradhan Devarajan

IPC: H04W76/12 ,  H04W76/22 ,  H04L12/28 ,  H04L12/46 ,  H04W36/00 ,  H04W76/32 ,  H04W92/22

Abstract: In response to movement of a wireless device, an active tunnel between switches is dynamically included as a member of a virtual network over which the wireless device communicates, where data communicated in the virtual network is carried over the active tunnel, and where the virtual network is overlaid on an underlay physical network that includes the switches and the wireless access points.

公开(公告)号：US20180131775A1

公开(公告)日：2018-05-10

申请号：US15566947

申请日：2015-06-18

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Venkatavaradhan Devarajan ,  Vijay Kannan

IPC: H04L29/08 ,  H04L29/12 ,  H04L12/46

CPC classification number: H04L67/16 ,  H04L12/462 ,  H04L12/4633 ,  H04L12/4641 ,  H04L61/25 ,  H04L2012/4629

Abstract: In one example, a system is described which includes an underlay network including a mapping server and a mapping database, an overlay network including VTEPs, at least one peripheral device, and at least one client device connected to the at least one peripheral device via the VTEPs. Further, each VTEP includes a traffic optimization module. A first VTEP receives a first service advertisement from a first peripheral device offering the first service and registers service advertisement information with the mapping database, a second VTEP connected to a first client device queries the mapping database to discover the first peripheral device via a unicast message, retrieves the service advertisement information from the mapping database upon a successful query, and sends the retrieved service advertisement information to the first client device, and the first client device selects the first peripheral device offering the first service using the service advertisement information.

公开(公告)号：US12126521B2

公开(公告)日：2024-10-22

申请号：US17411875

申请日：2021-08-25

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Rajib Majila ,  Venkatavaradhan Devarajan ,  Vinayak Joshi ,  Ram Iakhan Patel

IPC: H04L45/16 ,  H04L12/46 ,  H04L45/30 ,  H04L45/42

CPC classification number: H04L45/16 ,  H04L12/4633 ,  H04L45/30 ,  H04L45/42

Abstract: A system for policy management in a switch is provided. During operation, the system can generate, from a first policy defined for the switch, a second policy. The first policy can indicate whether a type of traffic is allowed from a source role to a destination role via an overlay tunnel. The second policy can indicate a plurality of destination roles that are allowed to receive multi-destination packets of the type of traffic from the source role via the overlay tunnel. Upon identifying a host associated with a role at a port of the switch, the system can determine whether the role belongs to the plurality of destination roles based on the second policy. If the role belongs to the plurality of allowed destination roles, the system can allow the port to forward a multi-destination packet, which is received via the overlay tunnel and associated with the type of traffic.