公开(公告)号：US20230179544A1

公开(公告)日：2023-06-08

申请号：US17544493

申请日：2021-12-07

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Saurabh Mohan ,  Vijeesh Erankotte Panayamthatta ,  Venkatavaradhan Devarajan

IPC: H04L49/35 ,  H04L49/00 ,  H04L12/46 ,  H04L69/22 ,  H04L67/141

CPC classification number: H04L49/355 ,  H04L49/30 ,  H04L12/4633 ,  H04L69/22 ,  H04L67/141 ,  H04L63/1416

Abstract: A first ingress interface on a switch receives a first control packet for establishing a Transmission Control Protocol (TCP) session and selects a first engine running on a first line card in the switch. A second ingress interface receives a second control packet and selects the same first engine. Data associated with the TCP session received by the first or second ingress interface subsequent to establishing the TCP session is to be forwarded to the first engine. The first ingress interface receives a third control packet and sends, to the selected first engine, a notification indicating the TCP session which is to be tracked. The first or second ingress interface receives a fourth packet with a payload associated with the TCP session and forwards, to the selected first engine, a copy of the fourth packet, thereby facilitating a plurality of engine instances to support application identification.

公开(公告)号：US11652664B2

公开(公告)日：2023-05-16

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 ,  H04L45/74 ,  H04L41/0604 ,  H04L12/42 ,  H04L101/622

CPC classification number: H04L12/423 ,  H04L12/437 ,  H04L12/4625 ,  H04L41/0627 ,  H04L45/74 ,  H04L2012/421 ,  H04L2101/622

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：US20220417287A1

公开(公告)日：2022-12-29

申请号：US17409179

申请日：2021-08-23

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Vinayak Joshi ,  Venkatavaradhan Devarajan ,  Rajib Majila ,  Tathagata Nandy

IPC: H04L29/06

Abstract: Examples disclosed herein relate to a method for defining an ingress access policy at an ingress network device based on instructions from an egress network device. The egress network device receives data packets directed to a first entity from a second entity connected to an ingress network device. Each data packet transmitted includes a source role tag corresponding to the second entity. At the egress network device, the data packets may be dropped based on the enforcement of an egress access policy. When the number of data packets that are being dropped increases beyond a pre-defined threshold, the egress network device transmits a command to the ingress network device instructing the ingress network device to create a restriction on the transmission of subsequent data packets. The command is transmitted in a Border Gateway Protocol (BGP) Flow Specification (FlowSpec) route.

公开(公告)号：US11368394B2

公开(公告)日：2022-06-21

申请号：US16807598

申请日：2020-03-03

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Anoop Govindan Nair ,  Vijeesh Erankotte Panayamthatta ,  Venkatavaradhan Devarajan

IPC: H04L45/50 ,  H04L45/24 ,  H04L45/74 ,  H04L49/00 ,  H04L41/0668 ,  H04L45/00

Abstract: Examples disclosed herein relate to a method comprising receiving, at a first label manager of a first network device, a first request to allocate a first label for a first route prefix for a first protocol, wherein the first network device and a second network device are part of a virtualized network device. The method includes receiving, at a second label manager of the second network device, a second request to determine the first label for the first route prefix for the first protocol, wherein the second request originates from the first label manager and determining, at the second label manager, the first label for the first route prefix for the first protocol. The method includes transmitting, the first label to the first label manager and transmitting, by the first label manager, the first label to a label management protocol corresponding to the first protocol, in response to the first request.

公开(公告)号：US20200336361A1

公开(公告)日：2020-10-22

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: H04L12/24 ,  H04L12/18

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：US10693766B2

公开(公告)日：2020-06-23

申请号：US16258831

申请日：2019-01-28

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Suresh Kumar Reddy Beeram ,  Venkatavaradhan Devarajan

IPC: H04L29/12 ,  H04L12/761 ,  H04L12/46 ,  H04L12/18 ,  H04L12/753 ,  H04L12/823 ,  H04L12/931 ,  H04L29/06

Abstract: An example system in accordance with an aspect of the present disclosure includes an inspection engine and a forwarding engine. The inspection engine is to identify whether a tunneled network packet is associated with the multicast group address and a VNI that is contained in the mapping table. The forwarding engine is to forward or discard the packet in response to whether the VNI is contained in the mapping table.

公开(公告)号：US20200014613A1

公开(公告)日：2020-01-09

申请号：US16132626

申请日：2018-09-17

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Haris Palapra ,  Mithun Kumar Halder ,  Pavankumar Kulkarni ,  Venkatavaradhan Devarajan

IPC: H04L12/751 ,  H04L12/707 ,  H04L12/24

Abstract: A method may include storing updated firmware in storage of a target switch, transmitting instructions to the target switch to initiate a restart thereof, and transmitting a respective notification to (i) at least one switch in each of a core layer and aggregation layer of the computer system, and (ii) switches in an access layer if a switch of the aggregation layer is the selected target switch. The notification may be indicative of an impending shut down of the target switch and include instructions to each recipient switch to cease directing packets thereto. The method may also include processing any packets directed to the target switch prior to the receipt of the notification and compliance thereto by each recipient switch, confirming all packets directed to the target switch from each recipient switch have been received and processed, and restarting the target switch, thereby updating the firmware on the target switch.

公开(公告)号：US20190342258A1

公开(公告)日：2019-11-07

申请号：US15967851

申请日：2018-05-01

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Anil Raj ,  Prasanth Gopinathan Nair Saraswathy Amma ,  Venkatavaradhan Devarajan

IPC: H04L29/12 ,  H04L29/08 ,  H04L12/741 ,  H04L12/801

Abstract: In some examples, a switch includes a first communication interface to communicate with a first device, a second communication interface to communicate with a proxy device enabled to perform proxy address resolution, and a processor to receive a first data packet from the first device targeted to a first layer 3 network address, send, to the proxy device, an address resolution request to obtain a layer 2 network address corresponding to the first layer 3 network address, and responsive to receiving a response to the address resolution request, update a forwarding information structure to refer to a layer 3 network address of the proxy device, the forwarding information structure useable to forward a second data packet to the proxy device for transmission of the second data packet to a destination device.

公开(公告)号：US20190097926A1

公开(公告)日：2019-03-28

申请号：US15717000

申请日：2017-09-27

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Anil Raj ,  Anoop Govindan Nair ,  Venkatavaradhan Devarajan

IPC: H04L12/775 ,  H04L29/14 ,  H04L12/703

Abstract: Examples disclosed herein relate to a grace link state advertisement (LSA) from a virtual stack device. In an example, a first member network device of a virtual stack device may an input from a Multi-Active Detection (MAD) device. The virtual stack device may be a logical network device comprising the first member network device and a second member network device. Based on the input from the MAD device, the first member network device may determine whether a grace link state advertisement (LSA) is to be sent to a neighbor Open Shortest Path First (OSPF) enabled router by the first member network device, wherein the neighbor OSPF enabled router is an OSPF neighbor to the virtual stack device.