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公开(公告)号：US11962498B1
公开(公告)日：2024-04-16
申请号：US18208000
申请日：2023-06-09
Applicant: Cisco Technology, Inc.
Inventor： Balaji Sundararajan , Ramakumara Kariyappa , Nithin Bangalore Raju , Bhairav Dutia , Vivek Agarwal , Satish Kumar Mahadevan , Ankur Bhargava
IPC: H04L45/586 , H04L45/748 , H04L61/5061
CPC classification number: H04L45/586 , H04L45/748 , H04L61/5061
Abstract: Symmetric networking techniques disclosed herein can be applied by gateway routers in cloud networks. The techniques can ensure that both outbound traffic received at a cloud from a branch device and return traffic directed from the cloud back to the branch device are processed by a same gateway router. The gateway router can use network address translation to insert IP addresses from an inside pool and an outside pool assigned to the router.
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公开(公告)号：US20230327994A1
公开(公告)日：2023-10-12
申请号：US17718775
申请日：2022-04-12
Applicant: Cisco Technology, Inc.
Inventor： Balaji Sundararajan , Srilatha Tangirala , Ajeet Pal Singh Gill , Vivek Agarwal , Nithin Bangalore Raju
Abstract: According to certain embodiments, a method by a network device includes receiving a handshake message for a traffic flow from a Software-Defined Wide-Area Network (SDWAN) and determining, from a traffic policy, whether the traffic flow should be symmetrical. In response to determining from the traffic policy that the traffic flow should be symmetrical, the method further includes performing a flow lookup on the traffic flow to determine if the network device originated the traffic flow. In response to determining that the network device did not originate the traffic flow, the method further includes determining a second network device that originated the traffic flow and sending the handshake message for the traffic flow to the second network device in order to maintain symmetry for the traffic flow.
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公开(公告)号：US12273267B2
公开(公告)日：2025-04-08
申请号：US18604972
申请日：2024-03-14
Applicant: Cisco Technology, Inc.
Inventor： Balaji Sundararajan , Ramakumara Kariyappa , Nithin Bangalore Raju , Bhairav Dutia , Vivek Agarwal , Satish Mahadevan , Ankur Bhargava
IPC: H04L45/586 , H04L45/748 , H04L61/5061
Abstract: Symmetric networking techniques disclosed herein can be applied by gateway routers in cloud networks. The techniques can ensure that both outbound traffic received at a cloud from a branch device and return traffic directed from the cloud back to the branch device are processed by a same gateway router. The gateway router can use network address translation to insert IP addresses from an inside pool and an outside pool assigned to the router.
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公开(公告)号：US20240223397A1
公开(公告)日：2024-07-04
申请号：US18608677
申请日：2024-03-18
Applicant: Cisco Technology, Inc.
Inventor： Balaji Sundararajan , Ajeet Pal Singh Gill , Srilatha Tangirala , Nithin Bangalore Raju , Ravi Kiran Chintallapudi , Pradeepan Kannawadi , Ganesh Devendrachar
Abstract: Techniques for virtualizing tenant transport interfaces configured to implement pertenant network routing attribute differentiation in each tenant overlay of a multisite wide area network (WAN) and share the virtual transport interfaces between multi-tenant edge (MTE) devices providing transport services to tenant devices based on a defined tenant tier model. A Software-Defined Networking (SDN) controller may receive a physical transport interface and/or a device type associated with a tenant device. The SDN controller may determine a virtual transport interface for the tenant device based on a tier associated with the tenant. MTE device(s) may utilize the physical transport interface to establish sessions with other MTE device(s) in the WAN. The virtual transport interface may be utilized by MTE devices to implement and/or enforce network routing attributes when forwarding network traffic associated with the tenant via the sessions established between the MTE devices through the WAN.
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5.发明公开公开(公告)号：US20240073084A1
公开(公告)日：2024-02-29
申请号：US18122931
申请日：2023-03-17
Applicant: Cisco Technology, Inc.
Inventor： Bhairav Dutia , Manish Jiwansingh Mehra , Upendar Surabhi , Sharmishtha Upadhyay , Sanjeev Pandurang Tondale , Yanbo Zhang , Yogesh Mittal , Nithin Bangalore Raju , Srilatha Tangirala , Balaji Sundararajan
IPC: H04L41/0681 , H04L41/0686 , H04L41/0894
CPC classification number: H04L41/0681 , H04L41/0686 , H04L41/0894
Abstract: Techniques and architecture are described for a pull model for obtaining and implementing config changes on network devices are described herein. A user submits intent configuration to the network controller that needs to be delivered to several network sites. The network controller generates a config file. The network controller sends a pull notification message to all network devices that need to retrieve the config file. This pull notification message only contains a corresponding transaction ID for each network device and a location for the network device to use to pull the config file. The network devices may utilize a HTTP REST API exposed by the network controller to obtain the config file from the network controller. The network devices may utilize a REST API exposed by the network controller to reply with statuses of the configuration transaction. The techniques and architecture may be applied to multi-tenant network devices.
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Patent Agency Ranking
公开(公告)号：US12293224B2
公开(公告)日：2025-05-06
申请号：US17390187
申请日：2021-07-30
Applicant: Cisco Technology, Inc.
Inventor： Xiaohu Wang , Ajeet Pal Singh Gill , Srilatha Tangirala , Nithin Bangalore Raju , Prabahar Radhakrishnan , Vivek Agarwal , Balaji Sundararajan
Abstract: A method for allocating resources of a virtual controller is disclosed. The method comprises: allocating resources of a virtual controller to a first tenant, wherein the first tenant is allocated a first tenant quantity of guaranteed resources of the virtual controller and a second tenant is allocated a second tenant quantity of guaranteed resources of the virtual controller; determining that resources requested by the first tenant are greater than the first tenant quantity of guaranteed resources; determining that the virtual controller has unutilized resources sufficient to at least partially provide additional resources beyond the first tenant quantity of guaranteed resources to the first tenant; and temporarily provisioning the additional resources to the first tenant, wherein the additional resources are greater than the first tenant quantity of guaranteed resources.
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公开(公告)号：US20250030638A1
公开(公告)日：2025-01-23
申请号：US18908162
申请日：2024-10-07
Applicant: Cisco Technology, Inc.
Inventor： Balaji Sundararajan , Srilatha Tangirala , Ajeet Pal Singh Gill , Vivek Agarwal , Nithin Bangalore Raju
Abstract: According to certain embodiments, a method by a network device includes receiving a handshake message for a traffic flow from a Software-Defined Wide-Area Network (SDWAN) and determining, from a traffic policy, whether the traffic flow should be symmetrical. In response to determining from the traffic policy that the traffic flow should be symmetrical, the method further includes performing a flow lookup on the traffic flow to determine if the network device originated the traffic flow. In response to determining that the network device did not originate the traffic flow, the method further includes determining a second network device that originated the traffic flow and sending the handshake message for the traffic flow to the second network device in order to maintain symmetry for the traffic flow.
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公开(公告)号：US11962429B1
公开(公告)日：2024-04-16
申请号：US17979255
申请日：2022-11-02
Applicant: Cisco Technology, Inc.
Inventor： Balaji Sundararajan , Srilatha Tangirala , Ajeet Pal Singh Gill , Nithin Bangalore Raju , Ravi Kiran Chintallapudi , Pradeepan Kannawadi , Ganesh Devendrachar
Abstract: Techniques for virtualizing tenant transport interfaces configured to implement per-tenant network routing attribute differentiation in each tenant overlay of a multisite wide area network (WAN) and share the virtual transport interfaces between multi-tenant edge (MTE) devices providing transport services to tenant devices based on a defined tenant tier model. A Software-Defined Networking (SDN) controller may receive a physical transport interface and/or a device type associated with a tenant device. The SDN controller may determine a virtual transport interface for the tenant device based on a tier associated with the tenant. MTE device(s) may utilize the physical transport interface to establish sessions with other MTE device(s) in the WAN. The virtual transport interface may be utilized by MTE devices to implement and/or enforce network routing attributes when forwarding network traffic associated with the tenant via the sessions established between the MTE devices through the WAN.
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公开(公告)号：US11588752B2
公开(公告)日：2023-02-21
申请号：US17389003
申请日：2021-07-29
Applicant: Cisco Technology, Inc.
Inventor： Srilatha Tangirala , Nithin Bangalore Raju , Ananya Raval , Prabahar Radhakrishnan , Vivek Agarwal , Balaji Sundararajan
Abstract: Route exchange in a plurality of network controller appliances on a per-tenant basis is disclosed. In one aspect, a method includes receiving, from a network management system and at a first network controller appliance, a designation of at least two tenants to be hosted on the first network controller appliance, the first network controller appliance being one of a plurality of network controller appliances in a SD-WAN; sending, from the first network controller appliance to other network controller appliances of the plurality of network controller appliances, a tenant list query message to obtain a corresponding tenant list of each of the other network controller appliances; and receiving a corresponding response from each of the other network controller appliances indicating the corresponding tenant list of each of the other network controller appliances, the corresponding response being used to update the tenant list on the first network controller appliance.
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公开(公告)号：US12160370B2
公开(公告)日：2024-12-03
申请号：US18166786
申请日：2023-02-09
Applicant: Cisco Technology, Inc.
Inventor： Srilatha Tangirala , Nithin Bangalore Raju , Ananya Raval , Prabahar Radhakrishnan , Vivek Agarwal , Balaji Sundararajan
Abstract: Route exchange in a plurality of network controller appliances on a per-tenant basis is disclosed. In one aspect, a method includes receiving, from a network management system and at a first network controller appliance, a designation of at least two tenants to be hosted on the first network controller appliance, the first network controller appliance being one of a plurality of network controller appliances in a SD-WAN; sending, from the first network controller appliance to other network controller appliances of the plurality of network controller appliances, a tenant list query message to obtain a corresponding tenant list of each of the other network controller appliances; and receiving a corresponding response from each of the other network controller appliances indicating the corresponding tenant list of each of the other network controller appliances, the corresponding response being used to update the tenant list on the first network controller appliance.
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