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公开(公告)号：US11146500B1
公开(公告)日：2021-10-12
申请号：US17087966
申请日：2020-11-03
Applicant: Cisco Technology, Inc.
Inventor： Managa Sunitha Arun Kumar , Gowri Mahendran Lingam Chandramohan , Laxmikantha Reddy Ponnuru , Samir Thoria
IPC: G06F9/46 , G06F15/16 , G06F15/173 , H04L12/911 , H04L12/923 , H04L12/46 , H04L12/26 , H04L12/927
Abstract: The present disclosure is directed to systems and methods for transport resource allocation using a centralized control policy, the methods including the steps of receiving node characteristics associated with a plurality of nodes; receiving a centralized policy configuration associated with at least one control policy to be applied based on a set of match conditions; identifying a one or more nodes from the plurality of nodes that satisfy, or that are associated with one or more tunnels that satisfy, the set of match conditions; and applying the at least one control policy to the one or more nodes that satisfy, or to the one or more tunnels that satisfy, the set of match conditions, wherein the at least one control policy is configured to override at least one locally-configured bidirectional forwarding detection (BFD) timer; and/or set a maximum number of tunnels for provisioning at the identified one or more nodes.
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公开(公告)号：US20210036987A1
公开(公告)日：2021-02-04
申请号：US16530596
申请日：2019-08-02
Applicant: Cisco Technology, Inc.
Inventor： Ajay Kumar Mishra , Satyajit Das , Laxmikantha Reddy Ponnuru , Anubhav Gupta
IPC: H04L29/12 , H04L12/24 , H04L12/46 , H04L12/707
Abstract: A WAN controller can configure a first WAN interface on a first WAN edge device to connect to a first transport network. The WAN controller can configure a second WAN interface on a second WAN edge device to connect to a second transport network. The WAN controller or the first WAN edge device, connected to a first access device of an access network, can determine the first WAN edge device has no Layer 2 connectivity to the second WAN edge device, connected to a second access device of the access network. The WAN controller or the first WAN edge device can establish a tunnel between the first WAN edge device and the second WAN interface. The WAN controller can route a specified class of WAN traffic received by the first WAN edge device from the access network through the tunnel.
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公开(公告)号：US20250106150A1
公开(公告)日：2025-03-27
申请号：US18472011
申请日：2023-09-21
Applicant: Cisco Technology, Inc.
Inventor： Avinash Shah , Pritam Baruah , Amjad Inamdar , Laxmikantha Reddy Ponnuru , Latika Ahuja , Jai Prakash Agrawal
Abstract: A system facilitates communication between branches of an SD-WAN and a service chain element. A hub node receives a data packet of a flow from a source branch over a VPN segment to be transmitted to a destination branch, extracts flow information from the data packet including VPN segment information to be stored in a flow table before transmitting the data packet to the service chain element over a service chain VPN. Upon return of the data packet from the service chain element, the hub node uses packet tuple information to retrieve the flow information with VPN segment information from the flow table. The hub node can then forward the data packet to the destination branch over the VPN segment. The hub node can generate and store an Auto Service Chaining Key that connects bidirectional flows so that the hub node can apply service-chaining to bidirectional traffic.
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公开(公告)号：US20250071060A1
公开(公告)日：2025-02-27
申请号：US18409701
申请日：2024-01-10
Applicant: Cisco Technology, Inc.
Inventor： Steven Wood , Balaji Sundararajan , Laxmikantha Reddy Ponnuru , Avinash Shah , Pritam Baruah , Venkatesh Nataraj , Ganesh Devendrachar
Abstract: Generally, Software-Defined Wide Area Networks (SD-WAN) generally do not support network segmentation. The concepts disclosed herein connects IPSec SD-WAN fabric to a Virtual Routing and Forwarding (VRF) router and make use of a Software Defined Cloud Interconnect (SDCI) Router to route traffic from IPSec SD-WAN to various cloud services from the SDCI Router in the fabric. The concepts disclosed herein also provides for tunnel multi-plexing that takes incoming and outgoing traffic and maps VPNs to any service VRF associated with the cloud based services.
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公开(公告)号：US20250071058A1
公开(公告)日：2025-02-27
申请号：US18946588
申请日：2024-11-13
Applicant: Cisco Technology, Inc.
IPC: H04L45/745 , H04L47/2483 , H04L47/43
Abstract: An efficient method to handle fragmented packets in multi-node all-active clusters. In one particular embodiment, a method includes receiving an initial fragment packet at a node in a cluster, creating a secondary flow table, linking the secondary flow table to a primary flow table, determining the primary flow owner of the initial fragment packet, and transmitting initial and succeeding fragment packets out of the cluster through, if possible, the primary flow owner.
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Patent Agency Ranking
公开(公告)号：US20250062994A1
公开(公告)日：2025-02-20
申请号：US18388351
申请日：2023-11-09
Applicant: Cisco Technology, Inc.
Inventor： Laxmikantha Reddy Ponnuru , Arul Murugan Manickam , Sanjay Sreenath , Hongbo Xia , Yajun Chen
IPC: H04L47/2408 , H04L41/5009 , H04L47/11
Abstract: Techniques described herein can perform per-queue network performance measurement mapping, in which per-queue network performance measurements are determined and then mapped back to service level agreement (SLA) classes assigned to use the queues. Network traffic associated with an SLA class can be processed through an assigned router queue. Wide area network (WAN) as well as local performance measurements from the assigned queue can be combined to determine a combined performance measurement associated with the assigned queue. The combined performance measurement can then be mapped or otherwise associated with the SLA class. Similarly, combined performance measurements can be determined for other router queues and mapped or otherwise associated with other SLA classes.
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公开(公告)号：US12166675B2
公开(公告)日：2024-12-10
申请号：US17892691
申请日：2022-08-22
Applicant: Cisco Technology, Inc.
IPC: H04L45/745 , H04L47/2483 , H04L47/43
Abstract: An efficient method to handle fragmented packets in multi-node all-active clusters. In one particular embodiment, a method includes receiving an initial fragment packet at a node in a cluster, creating a secondary flow table, linking the secondary flow table to a primary flow table, determining the primary flow owner of the initial fragment packet, and transmitting initial and succeeding fragment packets out of the cluster through, if possible, the primary flow owner.
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公开(公告)号：US20240348549A1
公开(公告)日：2024-10-17
申请号：US18356853
申请日：2023-07-21
Applicant: Cisco Technology, Inc.
Inventor： Pritam Baruah , Amjad Inamdar , Laxmikantha Reddy Ponnuru , Samir D. Thoria
IPC: H04L47/2408 , H04L45/24
CPC classification number: H04L47/2408 , H04L45/24
Abstract: The present disclosure is directed to making service-chains routable and intent-based within an enterprise network. In one aspect, a method for simplifying steering of network traffic includes receiving an intent-based description of one or more services to be applied to the network traffic; defining a type for a service chain that includes the one or more services based on the intent-based description, the type serving as an address for the service chain for routing the network traffic to and from the one or more service included in the service chain; implementing the service chain at one or more network hubs; and implementing a traffic steering policy in the network for steering the network traffic to the one or more network hubs to be serviced by the one or more services.
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公开(公告)号：US20240333554A1
公开(公告)日：2024-10-03
申请号：US18433248
申请日：2024-02-05
Applicant: Cisco Technology, Inc.
Inventor： Satish Mahadevan , Laxmikantha Reddy Ponnuru , Samir Thoria , Alfred Clarence Lindem, III , Arul Murugan Manickam
CPC classification number: H04L12/462 , H04L45/18
Abstract: Techniques for ensuring symmetric forwarding between disparate networks. The techniques may include receiving a gateway preference order associated with a route advertised by an edge node, the edge node associated with a first network. The techniques may also include determining, based at least in part on the gateway preference order, that a gateway node is a more preferred gateway for the route than another gateway node, the gateway node configured to facilitate communications between the first network and a second network. In some examples, the techniques may also include converting the gateway preference order into a metric associated with an IP routing protocol that is in use in the second network. In some examples, the route including the metric may be distributed within the second network such that the gateway node is the more preferred gateway for return traffic of the route.
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公开(公告)号：US20240305564A1
公开(公告)日：2024-09-12
申请号：US18652156
申请日：2024-05-01
Applicant: Cisco Technology, Inc.
Inventor： Samir Thoria , Ram Dular Singh , Praveen Raju Kariyanahalli , Laxmikantha Reddy Ponnuru , Ramanathan Lakshmikanthan
CPC classification number: H04L45/50 , H04L12/4641 , H04L45/04 , H04L45/22
Abstract: Systems and methods are provided for receiving bandwidth metrics from a plurality of routers on respective link routes in a network, compiling a link database including the bandwidth metrics of each respective link route in the network, selecting a first designated link path from the link database between a first router and a second router based on an application routing policy, the application routing policy being based on a routing metric, providing a first multiprotocol label switching label based on the first designated link path to the first router of the plurality of routers in the network, and restricting network traffic of the first router to the first designated link path provided in the first multiprotocol label switching label.
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