公开(公告)号：US20250158913A1

公开(公告)日：2025-05-15

申请号：US18506650

申请日：2023-11-10

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Saumya Dikshit ,  Suresh Kumar Reddy Beeram

IPC: H04L45/02 ,  H04L12/46 ,  H04L45/748

Abstract: A network device in a first fabric of an overlay network is provided. During operation, the network device can receive a route advertisement from a border device via which the network device communicates outside of the first fabric. The network device can determine, based on an indicator in the route advertisement, whether a host route associated with a host coupled to a second fabric of the overlay network is included in the route advertisement. If the indicator indicates that the host route is included in the route advertisement, the network device can store the host route in a data structure on the network device. The network device can also program, in the local forwarding hardware, a prefix route associated with the host route. If the network device detects a packet destined to the host device, the network device can program the host route in the forwarding hardware.

公开(公告)号：US20240406102A1

公开(公告)日：2024-12-05

申请号：US18204196

申请日：2023-05-31

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Saumya Dikshit ,  Thomas Samuel

IPC: H04L45/64 ,  H04L45/02 ,  H04L45/16

Abstract: A system for efficient traffic management is provided. During operation, the system can receive a first route update via a first tunnel coupling a first switch in a first overlay tunnel fabric of a network site. The first route update can include a first set of hierarchical identifiers associated with the first switch. Here, a respective identifier can correspond to a distinct networking hierarchy with respect to the first switch. The system can also receive a second route update via a second tunnel coupling a second switch in a second overlay tunnel fabric of the site. The second route update can include a second set of hierarchical identifiers associated with the second switch. Upon receiving a packet via a tunnel, the system can determine whether to forward the packet to the first switch and the second switch based on the first and second sets of hierarchical identifiers, respectively.

公开(公告)号：US12132588B2

公开(公告)日：2024-10-29

申请号：US17813103

申请日：2022-07-18

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Saumya Dikshit ,  Rajeev Jain

IPC: H04L12/46 ,  H04L12/42 ,  H04L45/02 ,  H04L45/645

CPC classification number: H04L12/4641 ,  H04L12/42 ,  H04L45/04 ,  H04L45/645

Abstract: In an example, a network switch is to receive a loop detect packet from an access netwssork connected to a Data center network (DCN). The DCN includes a VXLAN overlay and the network switch is configured as a VTEP. The network switch compares the VNI of a source VTEP from which the loop detect packet originates with a locally configured VNI. In response to a match, it is determined that the network switch is configured as a peer VTEP. Import RT in the loop detect packet is compared with an export RT of the peer VTEP and the export RT in the loop detect packet is compared with an import RT of the peer VTEP. Based on the comparison, it is determined whether a VXLAN tunnel is configured between the peer and the source VTEPs. In response to the VXLAN tunnel being configured, the switch may determine that a network loop is present.

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

IPC: H04W4/08 ,  H04W36/18 ,  H04L45/00 ,  H04L45/16 ,  H04L12/18 ,  H04W84/12 ,  H04W88/08

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.

公开(公告)号：US11570077B2

公开(公告)日：2023-01-31

申请号：US17221813

申请日：2021-04-04

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Saumya Dikshit ,  Vinayak Joshi

IPC: H04L43/0882 ,  H04L43/0823 ,  H04L43/0817 ,  H04L12/46 ,  H04L45/00 ,  H04L45/24 ,  H04L45/28

Abstract: An example network orchestrator of a SDN is configured to receive, based on a user input, credentials associated with a traffic flow. Based on the credentials, it is determined whether the traffic flow is received at an ingress overlay network node. Route information and encapsulation information of the traffic flow is extracted from the ingress overlay network node. A first set of underlay network nodes each of which is a potential next hop for the traffic flow is identified. It is determined, based on the encapsulation information, whether the traffic flow is received by one of the first set of underlay network nodes. It is determined whether the traffic flow is received at an egress overlay network node from one of the first. A network trace of the traffic flow is determined based on the determinations of whether the traffic flow is received at the ingress overlay network node, one of the first set of underlay network nodes, and the egress overlay network node. Based on the network trace, a fault in a link between network nodes or in the ingress overlay network node or in the egress overlay network node or in one of the first set of underlay network nodes is detected.

公开(公告)号：US20220224636A1

公开(公告)日：2022-07-14

申请号：US17148272

申请日：2021-01-13

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Saumya Dikshit ,  Anil Raj

IPC: H04L12/709 ,  H04L12/713 ,  H04L12/721 ,  H04L12/751

Abstract: One embodiment can provide a method and system for synchronizing MTU in a WAN edge with router redundancy. During operation, the system may determine a set of interfaces associated with a network device among a plurality of network devices coupled via inter-switch links. The system can determine a set of layer-3 MTU values corresponding to the set of network interfaces and can determine a highest layer-3 MTU value based on the set of determined layer-3 MTU values. The system can synchronize, via the inter-switch links, the highest layer-3 MTU value, resulting in a set of highest layer-3 MTU values at the network device. The system can determine, based on the set of highest layer-3 MTU values, a global highest layer-3 MTU value. The system can derive a layer-2 MTU value based on the global highest layer-3 MTU value and can configure a respective inter-switch link with the layer-2 MTU value.