Patents by Inventor Darren Dukes
Darren Dukes 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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Publication number: 20240098161Abstract: In one embodiment, Ethernet Virtual Private Network (EVPN) is implemented using Internet Protocol Version 6 (IPv6) Segment Routing (SRv6) underlay network and SRv6-enhanced Border Gateway Protocol (BGP) signaling. A particular route associated with a particular Internet Protocol Version 6 (IPv6) Segment Routing (SRv6) Segment Identifier (SID) is advertised in a particular route advertisement message of a routing protocol (e.g., BGP). The SID includes encoding representing a particular Ethernet Virtual Private Network (EVPN) Layer 2 (L2) flooding Segment Routing end function of the particular router and a particular Ethernet Segment Identifier (ESI), with the particular SID including a routable prefix to the particular router. The particular router receives a particular packet including the particular SID; and in response, the particular router performs the particular EVPN end function on the particular packet.Type: ApplicationFiled: July 27, 2023Publication date: March 21, 2024Inventors: Patrice Brissette, Clarence Filsfils, Darren Dukes, Gaurav Dawra, Francois Clad, Pablo Camarillo Garvia
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Patent number: 11838396Abstract: In one embodiment, Ethernet Virtual Private Network (EVPN) is implemented using Internet Protocol Version 6 (IPv6) Segment Routing (SRv6) underlay network and SRv6-enhanced Border Gateway Protocol (BGP) signaling. A particular route associated with a particular Internet Protocol Version 6 (IPv6) Segment Routing (SRv6) Segment Identifier (SID) is advertised in a particular route advertisement message of a routing protocol (e.g., BGP). The SID includes encoding representing a particular Ethernet Virtual Private Network (EVPN) Layer 2 (L2) flooding Segment Routing end function of the particular router and a particular Ethernet Segment Identifier (ESI), with the particular SID including a routable prefix to the particular router. The particular router receives a particular packet including the particular SID; and in response, the particular router performs the particular EVPN end function on the particular packet.Type: GrantFiled: February 14, 2022Date of Patent: December 5, 2023Assignee: Cisco Technology, Inc.Inventors: Patrice Brissette, Clarence Filsfils, Darren Dukes, Gaurav Dawra, Francois Clad, Pablo Camarillo Garvia
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Patent number: 11652913Abstract: In one embodiment, Ethernet Virtual Private Network (EVPN) is implemented using Internet Protocol Version 6 (IPv6) Segment Routing (SRv6) underlay network and SRv6-enhanced Border Gateway Protocol (BGP) signaling. A particular route associated with a particular Internet Protocol Version 6 (IPv6) Segment Routing (SRv6) Segment Identifier (SID) is advertised in a particular route advertisement message of a routing protocol (e.g., BGP). The SID includes encoding representing a particular Ethernet Virtual Private Network (EVPN) Layer 2 (L2) flooding Segment Routing end function of the particular router and a particular Ethernet Segment Identifier (ESI), with the particular SID including a routable prefix to the particular router. The particular router receives a particular packet including the particular SID; and in response, the particular router performs the particular EVPN end function on the particular packet.Type: GrantFiled: June 9, 2022Date of Patent: May 16, 2023Assignee: Cisco Technology, Inc.Inventors: Patrice Brissette, Clarence Filsfils, Darren Dukes, Gaurav Dawra, Francois Clad, Pablo Camarillo Garvia
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Publication number: 20220303366Abstract: In one embodiment, Ethernet Virtual Private Network (EVPN) is implemented using Internet Protocol Version 6 (IPv6) Segment Routing (SRv6) underlay network and SRv6-enhanced Border Gateway Protocol (BGP) signaling. A particular route associated with a particular Internet Protocol Version 6 (IPv6) Segment Routing (SRv6) Segment Identifier (SID) is advertised in a particular route advertisement message of a routing protocol (e.g., BGP). The SID includes encoding representing a particular Ethernet Virtual Private Network (EVPN) Layer 2 (L2) flooding Segment Routing end function of the particular router and a particular Ethernet Segment Identifier (ESI), with the particular SID including a routable prefix to the particular router. The particular router receives a particular packet including the particular SID; and in response, the particular router performs the particular EVPN end function on the particular packet.Type: ApplicationFiled: June 9, 2022Publication date: September 22, 2022Inventors: Patrice Brissette, Clarence Filsfils, Darren Dukes, Gaurav Dawra, Francois Clad, Pablo Camarillo Garvia
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Publication number: 20220166860Abstract: In one embodiment, Ethernet Virtual Private Network (EVPN) is implemented using Internet Protocol Version 6 (IPv6) Segment Routing (SRv6) underlay network and SRv6-enhanced Border Gateway Protocol (BGP) signaling. A particular route associated with a particular Internet Protocol Version 6 (IPv6) Segment Routing (SRv6) Segment Identifier (SID) is advertised in a particular route advertisement message of a routing protocol (e.g., BGP). The SID includes encoding representing a particular Ethernet Virtual Private Network (EVPN) Layer 2 (L2) flooding Segment Routing end function of the particular router and a particular Ethernet Segment Identifier (ESI), with the particular SID including a routable prefix to the particular router. The particular router receives a particular packet including the particular SID; and in response, the particular router performs the particular EVPN end function on the particular packet.Type: ApplicationFiled: February 14, 2022Publication date: May 26, 2022Inventors: Patrice Brissette, Clarence Filsfils, Darren Dukes, Gaurav Dawra, Francois Clad, Pablo Camarillo Garvia
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Patent number: 11283906Abstract: In one embodiment, Ethernet Virtual Private Network (EVPN) is implemented using Internet Protocol Version 6 (IPv6) Segment Routing (SRv6) underlay network and SRv6-enhanced Border Gateway Protocol (BGP) signaling. A particular route associated with a particular Internet Protocol Version 6 (IPv6) Segment Routing (SRv6) Segment Identifier (SID) is advertised in a particular route advertisement message of a routing protocol (e.g., BGP). The SID includes encoding representing a particular Ethernet Virtual Private Network (EVPN) Layer 2 (L2) flooding Segment Routing end function of the particular router and a particular Ethernet Segment Identifier (ESI), with the particular SID including a routable prefix to the particular router. The particular router receives a particular packet including the particular SID; and in response, the particular router performs the particular EVPN end function on the particular packet.Type: GrantFiled: November 26, 2019Date of Patent: March 22, 2022Assignee: CISCO TECHNOLOGY, INC.Inventors: Patrice Brissette, Clarence Filsfils, Darren Dukes, Gaurav Dawra, Francois Clad, Pablo Camarillo Garvia
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Patent number: 10892967Abstract: Techniques are provided for determining end-to-end path delay measurements. In one embodiment, a method includes identifying equal-cost multi-path (ECMP) sections comprising at least two different ECMP paths in a network comprising a plurality of nodes. In response to receiving a request to determine a delay measurement for end-to-end paths from an ingress node to an egress node through the network, the method includes determining sets of ECMP sections that are between the ingress node and the egress node and determining a plurality of paths through each set of ECMP sections. The method includes measuring delay for each of the plurality of paths using probe packets and determining delay measurements for all end-to-end paths. The delay measurements for end-to-end paths include a first subset including measured delays from the probe packets and a second subset calculated using combinations of measured delays.Type: GrantFiled: December 21, 2018Date of Patent: January 12, 2021Assignee: Cisco Technology, Inc.Inventors: Clarence Filsfils, Amila Pradeep Kumara Tharaperiya Gamage, Rakesh Gandhi, Darren Dukes
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Patent number: 10892987Abstract: In one embodiment, segment routing (SR) network processing of packets is performed on packets having a segment identifier structure providing processing and/or memory efficiencies. Responsive to an identified particular segment routing policy, the particular router retrieves from memory a dynamic segment routing identifier portion of the particular SR policy that includes a SR node value and a SR function value. The SR function value identifies segment routing processing to be performed by a router in the network identified based on the SR node value. A segment routing discriminator is independently identified, possibly being a fixed value for all segment identifiers in the network. Before sending into the network, a complete segment identifier is added to the particular packet by combining the segment routing discriminator with the dynamic segment routing identifier portion. The particular packet including the complete segment identifier is sent into the network.Type: GrantFiled: May 12, 2020Date of Patent: January 12, 2021Assignee: Cisco Technology, Inc.Inventors: Clarence Filsfils, Ahmed Refaat Bashandy, Syed Kamran Raza, Darren Dukes, Patrice Brissette, Jisu Bhattacharya
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Publication number: 20200274798Abstract: In one embodiment, segment routing (SR) network processing of packets is performed on packets having a segment identifier structure providing processing and/or memory efficiencies. Responsive to an identified particular segment routing policy, the particular router retrieves from memory a dynamic segment routing identifier portion of the particular SR policy that includes a SR node value and a SR function value. The SR function value identifies segment routing processing to be performed by a router in the network identified based on the SR node value. A segment routing discriminator is independently identified, possibly being a fixed value for all segment identifiers in the network. Before sending into the network, a complete segment identifier is added to the particular packet by combining the segment routing discriminator with the dynamic segment routing identifier portion. The particular packet including the complete segment identifier is sent into the network.Type: ApplicationFiled: May 12, 2020Publication date: August 27, 2020Applicant: Cisco Technology, Inc., a California corporationInventors: Clarence FILSFILS, Ahmed Refaat BASHANDY, Syed Kamran RAZA, Darren DUKES, Patrice BRISSETTE, Jisu BHATTACHARYA
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Publication number: 20200204469Abstract: Techniques are provided for determining end-to-end path delay measurements. In one embodiment, a method includes identifying equal-cost multi-path (ECMP) sections comprising at least two different ECMP paths in a network comprising a plurality of nodes. In response to receiving a request to determine a delay measurement for end-to-end paths from an ingress node to an egress node through the network, the method includes determining sets of ECMP sections that are between the ingress node and the egress node and determining a plurality of paths through each set of ECMP sections. The method includes measuring delay for each of the plurality of paths using probe packets and determining delay measurements for all end-to-end paths. The delay measurements for end-to-end paths include a first subset including measured delays from the probe packets and a second subset calculated using combinations of measured delays.Type: ApplicationFiled: December 21, 2018Publication date: June 25, 2020Inventors: Clarence Filsfils, Amila Pradeep Kumara Tharaperiya Gamage, Rakesh Gandhi, Darren Dukes
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Patent number: 10652144Abstract: In one embodiment, segment routing (SR) network processing of packets is performed on packets having a segment identifier structure providing processing and/or memory efficiencies. Responsive to an identified particular segment routing policy, the particular router retrieves from memory a dynamic segment routing identifier portion of the particular SR policy that includes a SR node value and a SR function value. The SR function value identifies segment routing processing to be performed by a router in the network identified based on the SR node value. A segment routing discriminator is independently identified, possibly being a fixed value for all segment identifiers in the network. Before sending into the network, a complete segment identifier is added to the particular packet by combining the segment routing discriminator with the dynamic segment routing identifier portion. The particular packet including the complete segment identifier is sent into the network.Type: GrantFiled: January 9, 2018Date of Patent: May 12, 2020Assignee: Cisco Technology, Inc.Inventors: Clarence Filsfils, Ahmed Refaat Bashandy, Syed Kamran Raza, Darren Dukes, Patrice Brissette, Jisu Bhattacharya
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Publication number: 20200099775Abstract: In one embodiment, Ethernet Virtual Private Network (EVPN) is implemented using Internet Protocol Version 6 (IPv6) Segment Routing (SRv6) underlay network and SRv6-enhanced Border Gateway Protocol (BGP) signaling. A particular route associated with a particular Internet Protocol Version 6 (IPv6) Segment Routing (SRv6) Segment Identifier (SID) is advertised in a particular route advertisement message of a routing protocol (e.g., BGP). The SID includes encoding representing a particular Ethernet Virtual Private Network (EVPN) Layer 2 (L2) flooding Segment Routing end function of the particular router and a particular Ethernet Segment Identifier (ESI), with the particular SID including a routable prefix to the particular router. The particular router receives a particular packet including the particular SID; and in response, the particular router performs the particular EVPN end function on the particular packet.Type: ApplicationFiled: November 26, 2019Publication date: March 26, 2020Applicant: Cisco Technology, Inc., a California corporationInventors: Patrice BRISSETTE, Clarence FILSFILS, Darren DUKES, Gaurav DAWRA, Francois CLAD, Pablo CAMARILLO GARVIA
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Patent number: 10491720Abstract: In one embodiment, Ethernet Virtual Private Network (EVPN) is implemented using Internet Protocol Version 6 (IPv6) Segment Routing (SRv6) underlay network and SRv6-enhanced Border Gateway Protocol (BGP) signaling. A particular route associated with a particular Internet Protocol Version 6 (IPv6) Segment Routing (SRv6) Segment Identifier (SID) is advertised in a particular route advertisement message of a routing protocol (e.g., BGP). The SID includes a locator of a particular router and a function encoding representing a particular EVPN end function of the particular router, with the particular SID including a routable prefix to the particular router. The particular router receives a particular packet including the particular SID; and in response, the particular router performs the particular EVPN end function on the particular packet. In one embodiment, the particular packet includes a Segment Routing Header (SRH) including the particular SID as the currently active SID.Type: GrantFiled: October 13, 2017Date of Patent: November 26, 2019Assignee: Cisco Technology, Inc.Inventors: Patrice Brissette, Clarence Filsfils, Darren Dukes, Gaurav Dawra, Francois Clad, Pablo Camarillo Garvia
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Publication number: 20190215267Abstract: In one embodiment, segment routing (SR) network processing of packets is performed on packets having a segment identifier structure providing processing and/or memory efficiencies. Responsive to an identified particular segment routing policy, the particular router retrieves from memory a dynamic segment routing identifier portion of the particular SR policy that includes a SR node value and a SR function value. The SR function value identifies segment routing processing to be performed by a router in the network identified based on the SR node value. A segment routing discriminator is independently identified, possibly being a fixed value for all segment identifiers in the network. Before sending into the network, a complete segment identifier is added to the particular packet by combining the segment routing discriminator with the dynamic segment routing identifier portion. The particular packet including the complete segment identifier is sent into the network.Type: ApplicationFiled: January 9, 2018Publication date: July 11, 2019Applicant: Cisco Technology, Inc.Inventors: Clarence Filsfils, Ahmed Refaat Bashandy, Syed Kamran Raza, Darren Dukes, Patrice Brissette, Jisu Bhattacharya
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Publication number: 20180375763Abstract: In one embodiment, Ethernet Virtual Private Network (EVPN) is implemented using Internet Protocol Version 6 (IPv6) Segment Routing (SRv6) underlay network and SRv6-enhanced Border Gateway Protocol (BGP) signaling. A particular route associated with a particular Internet Protocol Version 6 (IPv6) Segment Routing (SRv6) Segment Identifier (SID) is advertised in a particular route advertisement message of a routing protocol (e.g., BGP). The SID includes a locator of a particular router and a function encoding representing a particular EVPN end function of the particular router, with the particular SID including a routable prefix to the particular router. The particular router receives a particular packet including the particular SID; and in response, the particular router performs the particular EVPN end function on the particular packet. In one embodiment, the particular packet includes a Segment Routing Header (SRH) including the particular SID as the currently active SID.Type: ApplicationFiled: October 13, 2017Publication date: December 27, 2018Applicant: Cisco Technology, Inc.Inventors: Patrice Brissette, Clarence Filsfils, Darren Dukes, Gaurav Dawra, Francois Clad, Pablo Camarillo Garvia