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公开(公告)号：US12199868B2
公开(公告)日：2025-01-14
申请号：US17804333
申请日：2022-05-27
Applicant: Cisco Technology, Inc.
Inventor： Samir Thoria , Ram Dular Singh , Laxmikantha Reddy Ponnuru
Abstract: According to some embodiments, a method is performed by a software defined wide area network (SD-WAN) edge router in a hierarchical SD-WAN network comprising a plurality of edge routers and a plurality of border routers. The method comprises: originating a SD-WAN system route for advertising reachability to the edge router, the system route comprising an encryption key associated with the edge router; and transmitting the system route to one or more SD-WAN border routers. The method may further comprise: receiving a packet destined for the edge router from one of the one or more SD-WAN border routers, wherein the packet is at least partially encrypted with the encryption key associated with the edge router; and decrypting the received packet.
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公开(公告)号：US20240414094A1
公开(公告)日：2024-12-12
申请号：US18208165
申请日：2023-06-09
Applicant: Cisco Technology, Inc.
Inventor： Avinash Shah , Ganesh Devendrachar , Arul Murugan Manickam , Laxmikantha Reddy Ponnuru , Satyajit Das , Pritam Baruah
IPC: H04L47/36
Abstract: Techniques are described for detecting a change in Path Maximum Transfer Unit (PMTU) in a network and initiating a PMTU discovery process. A Bidirectional Forwarding Detection (BFD) data packet is generated having enhanced headers configured to record a largest packet sent value and a largest packet received value. The BFD data packet is sent from a first network device (such as a first router) to a second network device (such as a second router). A largest packet sent value and a largest packet received value are each recorded in the BFD data packet. If the largest data packet sent value is larger than the largest data packet received value, then a determination can be made that a path change has resulted in a reduction in PMTU which has resulted in either a data packet being fragmented, a data packet being dropped or both. A PMTU discovery can then be performed.
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公开(公告)号：US20230388233A1
公开(公告)日：2023-11-30
申请号：US17804333
申请日：2022-05-27
Applicant: Cisco Technology, Inc.
Inventor： Samir Thoria , Ram Dular Singh , Laxmikantha Reddy Ponnuru
CPC classification number: H04L45/76 , H04L45/64 , H04L45/50 , H04L63/0485
Abstract: According to some embodiments, a method is performed by a software defined wide area network (SD-WAN) edge router in a hierarchical SD-WAN network comprising a plurality of edge routers and a plurality of border routers. The method comprises: originating a SD-WAN system route for advertising reachability to the edge router, the system route comprising an encryption key associated with the edge router; and transmitting the system route to one or more SD-WAN border routers. The method may further comprise: receiving a packet destined for the edge router from one of the one or more SD-WAN border routers, wherein the packet is at least partially encrypted with the encryption key associated with the edge router; and decrypting the received packet.
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公开(公告)号：US20230344771A1
公开(公告)日：2023-10-26
申请号：US17816818
申请日：2022-08-02
Applicant: Cisco Technology, Inc.
Inventor： Arul Murugan Manickam , Avinash Shah , Laxmikantha Reddy Ponnuru , Satyajit Das , Deepa Rajendra Sangolli , Govindakrishnan Kannan , Pritam Baruah
IPC: H04L47/125 , H04L47/2416
CPC classification number: H04L47/125 , H04L47/2416
Abstract: In one embodiment, a method includes receiving traffic and identifying one or more attributes associated with the traffic. The method also includes dynamically selecting a load balancing algorithm based on the one or more attributes in accordance with a load balancing scheme. The method further includes performing load balancing on the traffic in accordance with the load balancing algorithm and communicating the traffic from a first network element to a second network element in accordance with the load balancing.
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公开(公告)号：US11646956B2
公开(公告)日：2023-05-09
申请号：US16675465
申请日：2019-11-06
Applicant: Cisco Technology, Inc.
Inventor： Anubhav Gupta , Mahesh Eknath Bhole , Laxmikantha Reddy Ponnuru , Ajay Kumar Mishra , Prabahar Radhakrishnan
IPC: G06F15/173 , H04L43/0829 , H04L43/0811 , H04L43/0817 , H04L41/0604 , H04L45/42 , H04L45/00 , H04L43/087
CPC classification number: H04L43/0829 , H04L41/0627 , H04L43/087 , H04L43/0811 , H04L43/0817 , H04L45/22 , H04L45/42
Abstract: Disclosed is a first device and a second device each sending BFD echo request packets in an initial stage of establishing communication between the two devices. A method can include determining that a certain mode is detected, such as a low bandwidth mode. The method can be practiced by one or both of the devices or a separate network controller. Based on the detection of the certain mode or the communication link being in a certain mode, the method includes the first device or the second device electing to be a master or a slave. Upon establishing that one of the devices is the master and the other of the devices is a slave, only the master will send BFD echo request packets.
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Patent Agency Ranking
公开(公告)号：US20230052974A1
公开(公告)日：2023-02-16
申请号：US17586204
申请日：2022-01-27
Applicant: Cisco Technology, Inc.
Inventor： Samir Thoria , Vivek Agarwal , Satish Kumar Mahadevan , Laxmikantha Reddy Ponnuru , Jean-Marc Barozet , Hamzah Kardame
Abstract: According to some embodiments, a software defined wide area network (SD-WAN) includes a first region and a second region. The first region includes multiple first routing controllers and multiple first SD-WAN edge routers. The second region includes multiple second routing controllers and multiple second SD-WAN edge routers. Each first SD-WAN edge router of the first region is configured to establish Overlay Management Protocol (OMP) peering connections with the plurality of first routing controllers of the first region but to avoid establishing OMP peering connections with the plurality of second routing controllers of the second region. Each second SD-WAN edge router of the second region is configured to establish OMP peering connections with the plurality of second routing controllers of the second region but to avoid establishing OMP peering connections with the plurality of first routing controllers of the first region.
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公开(公告)号：US20210029008A1
公开(公告)日：2021-01-28
申请号：US16675465
申请日：2019-11-06
Applicant: Cisco Technology, Inc.
Inventor： Anubhav Gupta , Mahesh Eknath Bhole , Laxmikantha Reddy Ponnuru , Ajay Kumar Mishra , Prabahar Radhakrishnan
IPC: H04L12/26 , H04L12/717 , H04L12/707 , H04L12/24
Abstract: Disclosed is a first device and a second device each sending BFD echo request packets in an initial stage of establishing communication between the two devices. A method can include determining that a certain mode is detected, such as a low bandwidth mode. The method can be practiced by one or both of the devices or a separate network controller. Based on the detection of the certain mode or the communication link being in a certain mode, the method includes the first device or the second device electing to be a master or a slave. Upon establishing that one of the devices is the master and the other of the devices is a slave, only the master will send BFD echo request packets.
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8.发明申请公开(公告)号：US20250141796A1
公开(公告)日：2025-05-01
申请号：US18498928
申请日：2023-10-31
Applicant: Cisco Technology, Inc.
Inventor： Satish Kumar Mahadevan , Laxmikantha Reddy Ponnuru , Pritam Baruah , Sourav Sen , Samir Thoria , Ramakumara Kariyappa
IPC: H04L45/586 , H04L45/12 , H04L45/28
Abstract: Present disclosure includes determining, at two or more gateway nodes that each communicate with a plurality of branch nodes and a plurality of resources, dynamically a path between each of the plurality of branch nodes and each of the plurality of resources, wherein the path includes one or more virtual routers; generating, at the two or more gateways, dynamically a path length based upon a number of virtual routers each path traverses; automatically translating the path length to an overlay management protocol route preference for each of the plurality of resources.
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公开(公告)号：US20240080267A1
公开(公告)日：2024-03-07
申请号：US18504576
申请日：2023-11-08
Applicant: Cisco Technology, Inc.
Inventor： Laxmikantha Reddy Ponnuru , Arul Murugan Manickam , Michael David Tracy , Kannan Kumar , Hamzah Kardame
IPC: H04L45/00 , H04L45/028 , H04L45/44
CPC classification number: H04L45/38 , H04L45/028 , H04L45/44
Abstract: In one embodiment, a method includes receiving, by a first node of a node cluster in a software-defined wide area network (SD-WAN), traffic from a wide area network (WAN), assigning, by the first node of the node cluster, flow ownership of the traffic to the first node, and communicating, by the first node of the node cluster, the traffic to a local area network (LAN). The method also includes receiving, by the first node of the node cluster, return traffic from a second node of the node cluster and detecting, by the first node of the node cluster, a diversion of the return traffic. The method further includes relinquishing, by the first node of the node cluster, the flow ownership and assigning, by the first node of the node cluster, the flow ownership to the second node of the node cluster.
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公开(公告)号：US20240031281A1
公开(公告)日：2024-01-25
申请号：US18478567
申请日：2023-09-29
Applicant: Cisco Technology, Inc.
Inventor： Samir Thoria , Ram Dular Singh , Praveen Raju Kariyanahalli , Laxmikantha Reddy Ponnuru , Ramanathan Lakshmikanthan
CPC classification number: H04L45/50 , H04L45/22 , H04L45/04 , H04L12/4641
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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