Patents by Inventor KIRAN SASIDHARAN PILLAI
KIRAN SASIDHARAN PILLAI has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11706133Abstract: The present technology pertains to a group-based network policy using Segment Routing over an IPv6 dataplane (SRv6). After a source application sends a packet, an ingress node can receive the packet, and if the source node is capable, it can identify an application policy and apply it. The ingress node indicates that the policy has been applied by including policy bits in the packet encapsulation. When the packet is received by the egress node, it can determine whether the policy was already applied, and if so, the packet is forward to the destination application. If the egress node determines that the policy has not be applied the destination application can apply the policy. Both the ingress node and egress nodes can learn of source application groups, destination application groups, and applicable policies through communication with aspects of the segment routing fabric.Type: GrantFiled: July 14, 2022Date of Patent: July 18, 2023Assignee: Cisco Technology, Inc.Inventors: Clarence Filsfils, Ahmed Mohamed Ahmed Abdelsalam, Francois Clad, Pablo Camarillo Garvia, Kiran Sasidharan Pillai
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Publication number: 20220385573Abstract: The present technology pertains to a group-based network policy using Segment Routing over an IPv6 dataplane (SRv6). After a source application sends a packet, an ingress node can receive the packet, and if the source node is capable, it can identify an application policy and apply it. The ingress node indicates that the policy has been applied by including policy bits in the packet encapsulation. When the packet is received by the egress node, it can determine whether the policy was already applied, and if so, the packet is forward to the destination application. If the egress node determines that the policy has not be applied the destination application can apply the policy. Both the ingress node and egress nodes can learn of source application groups, destination application groups, and applicable policies through communication with aspects of the segment routing fabric.Type: ApplicationFiled: July 14, 2022Publication date: December 1, 2022Inventors: Clarence Filsfils, Ahmed Mohamed Ahmed Abdelsalam, Francois Clad, Pablo Camarillo Garvia, Kiran Sasidharan Pillai
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Patent number: 11418435Abstract: The present technology pertains to a group-based network policy using Segment Routing over an IPv6 dataplane (SRv6). After a source application sends a packet, an ingress node can receive the packet, and if the source node is capable, it can identify an application policy and apply it. The ingress node indicates that the policy has been applied by including policy bits in the packet encapsulation. When the packet is received by the egress node, it can determine whether the policy was already applied, and if so, the packet is forward to the destination application. If the egress node determines that the policy has not be applied the destination application can apply the policy. Both the ingress node and egress nodes can learn of source application groups, destination application groups, and applicable policies through communication with aspects of the segment routing fabric.Type: GrantFiled: April 28, 2020Date of Patent: August 16, 2022Assignee: CISCO TECHNOLOGY, INC.Inventors: Clarence Filsfils, Ahmed Mohamed Ahmed Abdelsalam, Francois Clad, Pablo Camarillo Garvia, Kiran Sasidharan Pillai
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Publication number: 20210243116Abstract: The present technology pertains to a group-based network policy using Segment Routing over an IPv6 dataplane (SRv6). After a source application sends a packet, an ingress node can receive the packet, and if the source node is capable, it can identify an application policy and apply it. The ingress node indicates that the policy has been applied by including policy bits in the packet encapsulation. When the packet is received by the egress node, it can determine whether the policy was already applied, and if so, the packet is forward to the destination application. If the egress node determines that the policy has not be applied the destination application can apply the policy. Both the ingress node and egress nodes can learn of source application groups, destination application groups, and applicable policies through communication with aspects of the segment routing fabric.Type: ApplicationFiled: April 28, 2020Publication date: August 5, 2021Inventors: Clarence Filsfils, Ahmed Mohamed Ahmed Abdelsalam, Francois Clad, Pablo Camarillo Garvia, Kiran Sasidharan Pillai
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Patent number: 10454819Abstract: A method is implemented by a first Provider Edge (PE) network device in a network to configure a pseudo-wire (PW) between the first PE network device and a second PE network device in the network using Intermediate System to Intermediate System (IS-IS). The method includes receiving a first LSP update flooded in the network by the second PE network device via IS-IS, where the first LSP update advertises the PW. The method further includes configuring a local forwarding information base with a local PW label associated with the PW such that the first PE network device forwards traffic encapsulated with the local PW label to an Attachment Circuit associated with the PW and flooding a second LSP update in the network via IS-IS that includes an indication that the first PE network device is ready to receive traffic from the second PE network device over the PW.Type: GrantFiled: May 31, 2016Date of Patent: October 22, 2019Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Uma S. Chunduri, Kiran Sasidharan Pillai, Evgeny Tantsura
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Patent number: 10361951Abstract: A method is implemented by a first Provider Edge (PE) network device in a network to configure a pseudo-wire (PW) between the first PE network device and a second PE network device in the network using an Interior Gateway Protocol (IGP). The method includes receiving a first advertisement message flooded in the network by the second PE network device via the IGP, where the first advertisement message advertises the PW. The method further includes configuring a local forwarding information base with a local PW label associated with the PW such that the first PE network device forwards traffic encapsulated with the local PW label to an Attachment Circuit associated with the PW and flooding a second advertisement message in the network via the IGP that includes an indication that the first PE network device is ready to receive traffic from the second PE network device over the PW.Type: GrantFiled: May 31, 2016Date of Patent: July 23, 2019Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Uma S. Chunduri, Kiran Sasidharan Pillai, Evgeny Tantsura
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Publication number: 20190109785Abstract: A method is implemented by a first Provider Edge (PE) network device in a network to configure a pseudo-wire (PW) between the first PE network device and a second PE network device in the network using an Interior Gateway Protocol (IGP). The method includes receiving a first advertisement message flooded in the network by the second PE network device via the IGP, where the first advertisement messge advertises the PW. The method further includes configuring a local forwarding information base with a local PW label associated with the PW such that the first PE network device forwards traffic encapsulated with the local PW label to an Attachment Circuit associated with the PW and flooding a second advertisement message in the network via the IGP that includes an indication that the first PE network device is ready to receive traffic from the second PE network device over the PW.Type: ApplicationFiled: May 31, 2016Publication date: April 11, 2019Inventors: Uma S. CHUNDURI, Kiran SASIDHARAN PILLAI, Evgeny TANTSURA
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Publication number: 20190097928Abstract: A method is implemented by a first Provider Edge (PE) network device in a network to configure a pseudo-wire (PW) between the first PE network device and a second PE network device in the network using Intermediate System to Intermediate System (IS-IS). The method includes receiving a first LSP update flooded in the network by the second PE network device via IS-IS, where the first LSP update advertises the PW. The method further includes configuring a local forwarding information base with a local PW label associated with the PW such that the first PE network device forwards traffic encapsulated with the local PW label to an Attachment Circuit associated with the PW and flooding a second LSP update in the network via IS-IS that includes an indication that the first PE network device is ready to receive traffic from the second PE network device over the PW.Type: ApplicationFiled: May 31, 2016Publication date: March 28, 2019Inventors: Uma S. CHUNDURI, Kiran SASIDHARAN PILLAI, Evgeny TANTSURA
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Publication number: 20160112316Abstract: Exemplary methods include generating a plurality of prefix entries, wherein each prefix entry includes information for associating incoming traffic to a data structure. In one embodiment, the methods further include generating a plurality of data structures, wherein one or more of the plurality of data structures includes a reference to a master entry. In one embodiment, the methods further include generating the master entry, wherein the master entry includes information for determining how to use the data structures to forward incoming traffic to one or more of the plurality of other network devices.Type: ApplicationFiled: October 16, 2014Publication date: April 21, 2016Inventors: Anjing Wang, Kiran Sasidharan Pillai, Allwyn Carvalho, Sunny Wang
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Patent number: 9264302Abstract: A method implemented for a link aggregation group is disclosed. The link aggregation group contains a local interface and a remote interface. The local interface is a logical interface formed by a plurality of network elements including a local network element and a peer network element. The local network element communicates with the peer network element through an inter-peer link. The method starts with determining that the local network element is active by checking that an aggregate state of the links coupled to the local network element is active. The method continues with detecting an anomaly of the active links and sending a notification to the peer network element about the anomaly. Then method continues with receiving an activation confirmation that the peer network element is ready for switching and switching traffic from the active links to the inter-peer link in response to receiving the activation confirmation.Type: GrantFiled: June 17, 2013Date of Patent: February 16, 2016Assignee: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)Inventors: Lars Ernstrom, Allwyn Carvalho, Veeranjaneyulu Gorla, Anjing Wang, Kiran Sasidharan Pillai, Chezhian Renganathan
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Patent number: 9025442Abstract: According to one embodiment, a method for establishing a primary and redundant PW over disjoint bidirectional RSVP-TE LSPs include establishing a first bidirectional RSVP-TE LSP that includes a first upstream path and a first downstream path. The method includes transmitting a first label distribution protocol (LDP) label mapping message that includes a first transport path include field that causes the second PE router to use the first downstream path for the primary PW. The method includes establishing a second bidirectional RSVP-TE LSP that includes a second upstream path and a second downstream path. The method includes transmitting a second LDP label mapping message that includes a second transport path include field that causes the second PE router to use the second downstream path for the redundant PW.Type: GrantFiled: May 31, 2013Date of Patent: May 5, 2015Assignee: Telefonaktiebolaget L M Ericsson (publ)Inventor: Kiran Sasidharan Pillai
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Publication number: 20140369186Abstract: A method implemented for a link aggregation group is disclosed. The link aggregation group contains a local interface and a remote interface. The local interface is a logical interface formed by a plurality of network elements including a local network element and a peer network element. The local network element communicates with the peer network element through an inter-peer link. The method starts with determining that the local network element is active by checking that an aggregate state of the links coupled to the local network element is active. The method continues with detecting an anomaly of the active links and sending a notification to the peer network element about the anomaly. Then method continues with receiving an activation confirmation that the peer network element is ready for switching and switching traffic from the active links to the inter-peer link in response to receiving the activation confirmation.Type: ApplicationFiled: June 17, 2013Publication date: December 18, 2014Inventors: Lars Ernstrom, Allwyn Carvalho, Veeranjaneyulu Gorla, Anjing Wang, Kiran Sasidharan Pillai, Chezhian Renganathan
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Publication number: 20140355419Abstract: According to one embodiment, a method for establishing a primary and redundant PW over disjoint bidirectional RSVP-TE LSPs include establishing a first bidirectional RSVP-TE LSP that includes a first upstream path and a first downstream path. The method includes transmitting a first label distribution protocol (LDP) label mapping message that includes a first transport path include field that causes the second PE router to use the first downstream path for the primary PW. The method includes establishing a second bidirectional RSVP-TE LSP that includes a second upstream path and a second downstream path. The method includes transmitting a second LDP label mapping message that includes a second transport path include field that causes the second PE router to use the second downstream path for the redundant PW.Type: ApplicationFiled: May 31, 2013Publication date: December 4, 2014Applicant: Telefonaktiebolaget L M Ericsson (publ)Inventor: KIRAN SASIDHARAN PILLAI