Patents by Inventor Pablo Camarillo Garvia
Pablo Camarillo Garvia 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: 20240137281Abstract: Techniques for monitoring data transport in a network virtualization function chain (chain). A path tracing packet is generated having a Midpoint Compressed Data (MCD) to collect path tracing information of the chain. The network virtualization function node is configured to record an MCD containing Wide Local Path Tracing Identification (WL PT ID). The WL PT ID includes a first field having a value that indicates that a non-standard path tracing format is to be used and a second field that indicates a particular path tracing format to be used. The path tracing packet is passed through the chain and is received back after passing through the chain. Data collected by the path tracing packet is then analyzed to determine which network virtualization function nodes and chains the path tracing packet passed through and the amount of time taken for the path tracing packet to pass through the chain.Type: ApplicationFiled: April 11, 2023Publication date: April 25, 2024Inventors: Clarence Filsfils, Ahmed Mohamed Ahmed Abdelsalam, Pablo Camarillo Garvia, Sonia Ben Ayed
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Patent number: 11962473Abstract: Techniques for monitoring data transport in a network virtualization function chain (chain). A path tracing packet is generated having a Midpoint Compressed Data (MCD) to collect path tracing information of the chain. The network virtualization function node is configured to record an MCD containing Wide Local Path Tracing Identification (WL PT ID). The WL PT ID includes a first field having a value that indicates that a non-standard path tracing format is to be used and a second field that indicates a particular path tracing format to be used. The path tracing packet is passed through the chain and is received back after passing through the chain. Data collected by the path tracing packet is then analyzed to determine which network virtualization function nodes and chains the path tracing packet passed through and the amount of time taken for the path tracing packet to pass through the chain.Type: GrantFiled: April 12, 2023Date of Patent: April 16, 2024Assignee: Cisco Technology, Inc.Inventors: Clarence Filsfils, Ahmed Mohamed Ahmed Abdelsalam, Pablo Camarillo Garvia, Sonia Ben Ayed
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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: 11936759Abstract: In one embodiment, a method includes identifying, by a network component, a first segment identifier (SID) within a SID list. The first SID includes a first SID block and a first micro SID (uSID). The method also includes initializing, by the network component, a packing list of a uSID carrier with the first uSID of the first SID and initializing, by the network component, a packing block of the uSID carrier with the first SID block of the first SID. The method further includes initializing, by the network component, a remaining packing capacity of the packing list with a carrier capacity of the first SID and initializing, by the network component, an empty compressed SID list.Type: GrantFiled: August 16, 2022Date of Patent: March 19, 2024Assignee: CISCO TECHNOLOGY, INC.Inventors: Clarence Filsfils, Francois Clad, Pablo Camarillo Garvia, Siva Sivabalan, Syed Kamran Raza
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Publication number: 20240039845Abstract: The present disclosure provides a packet tracing mechanism will be described that provides packet tracing information to a mobile network controller. In one aspect, a method includes receiving a data packet sent from a source node to a destination node; determining if the data packet is to be updated with packet tracing information; and upon determining that the data packet is to be updated, updating the packet tracing information of the data packet to include identification of the network device and an ingress timestamp of the data packet at the network device for a corresponding network controller to determining network routing policies.Type: ApplicationFiled: August 25, 2023Publication date: February 1, 2024Inventors: Clarence Filsfils, Pablo Camarillo Garvia
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Publication number: 20240022510Abstract: The present disclosure provides a packet tracing mechanism will be described that provides packet tracing information to a mobile network controller. In one aspect, a method includes receiving a data packet sent from a source node to a destination node; determining if the data packet is to be updated with packet tracing information; and upon determining that the data packet is to be updated, updating the packet tracing information of the data packet to include identification of the network device and an ingress timestamp of the data packet at the network device for a corresponding network controller to determining network routing policies.Type: ApplicationFiled: July 14, 2023Publication date: January 18, 2024Inventors: Clarence Filsfils, Pablo Camarillo Garvia
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Patent number: 11838200Abstract: In one embodiment, a network comprises a first forwarding domain using a first data plane forwarding protocol and a second forwarding domain using a second data plane forwarding protocol different than the first data forwarding plane forwarding protocol. The first forwarding domain includes a first path node and a particular border node. The second forwarding domain includes a second path node and the particular border node. The particular border node performs Segment Routing or other protocol interworking between the different data plane forwarding domains, such as for transporting packets through a different forwarding domain or translating a packet to use a different data forwarding protocol. These forwarding domains typically include Segment Routing (SR) and SR-Multiprotocol Label Switching (SR-MPLS). Paths through the network are determined by a Path Computation Engine and/or based on route advertisements such associated with Binding Segment Identifiers (BSIDs) (e.g.Type: GrantFiled: September 23, 2021Date of Patent: December 5, 2023Assignee: Cisco Technology, Inc.Inventors: Clarence Filsfils, Swadesh Agrawal, Zafar Ali, Pablo Camarillo Garvia, Francois Clad
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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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Publication number: 20230388207Abstract: Techniques for optimizing technologies related to network path tracing and network delay measurements are described herein. Some of the techniques may include using an IPv6 header option and/or segment identifier field of a segment list or a TLV of a segment routing header as a telemetry data carrier. The techniques may also include using an SRv6 micro-segment (uSID) instruction to indicate to a node of a network that the node is to perform one or more path tracing actions and encapsulating the packet and forward. Additionally, the techniques may include using short interface identifiers corresponding to node interfaces to trace a packet path through a network. Further, the techniques may include using short timestamps to determine delay measurements associated with sending a packet through a network. In various examples, the techniques described above and herein may be used with each other to optimize network path tracing and delay measurement techniques.Type: ApplicationFiled: August 15, 2023Publication date: November 30, 2023Inventors: Clarence Filsfils, Ahmed Mohamed Ahmed Abdelsalam, Rakesh Gandhi, Pablo Camarillo Garvia, Francois Clad
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Publication number: 20230336450Abstract: Techniques for optimizing technologies related to network path tracing and network delay measurements are described herein. Some of the techniques may include using an IPv6 header option and/or segment identifier field of a segment list or a TLV of a segment routing header as a telemetry data carrier. The techniques may also include using an SRv6 micro-segment (uSID) instruction to indicate to a node of a network that the node is to perform one or more path tracing actions and encapsulating the packet and forward. Additionally, the techniques may include using short interface identifiers corresponding to node interfaces to trace a packet path through a network. Further, the techniques may include using short timestamps to determine delay measurements associated with sending a packet through a network. In various examples, the techniques described above and herein may be used with each other to optimize network path tracing and delay measurement techniques.Type: ApplicationFiled: June 8, 2023Publication date: October 19, 2023Inventors: Clarence Filsfils, Ahmed Mohamed Ahmed Abdelsalam, Rakesh Gandhi, Pablo Camarillo Garvia, Francois Clad
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Patent number: 11757744Abstract: Techniques for optimizing technologies related to network path tracing and network delay measurements are described herein. Some of the techniques may include using an IPv6 header option and/or segment identifier field of a segment list or a TLV of a segment routing header as a telemetry data carrier. The techniques may also include using an SRv6 micro-segment (uSID) instruction to indicate to a node of a network that the node is to perform one or more path tracing actions and encapsulating the packet and forward. Additionally, the techniques may include using short interface identifiers corresponding to node interfaces to trace a packet path through a network. Further, the techniques may include using short timestamps to determine delay measurements associated with sending a packet through a network. In various examples, the techniques described above and herein may be used with each other to optimize network path tracing and delay measurement techniques.Type: GrantFiled: June 10, 2021Date of Patent: September 12, 2023Assignee: Cisco Technology, Inc.Inventors: Clarence Filsfils, Ahmed Mohamed Ahmed Abdelsalam, Rakesh Gandhi, Pablo Camarillo Garvia, Francois Clad
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Publication number: 20230283568Abstract: The present technology is directed to a system and method for implementing network resource partitioning and Quality of Service (QoS) separation through network slicing. Embodiments of the present invention describe scalable network slicing method based on defining Segment Routing Flexible Algorithm to represent a network slice and assigning a distinct QoS policy queue to each of the Flexible Algorithms configured on a network node. Therefore, scalable network slice based queuing is implemented wherein a single packet processing queue is assigned to each Flex-Algorithm based network slice. QoS policy queue may be implemented in a hierarchical fashion by differentiation between flow packets in a single QoS policy queue based on value of experimental bits in the header.Type: ApplicationFiled: March 6, 2023Publication date: September 7, 2023Inventors: Clarence Filsfils, Zafar Ali, Pablo Camarillo Garvia, Francois Clad
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Patent number: 11736397Abstract: The present disclosure provides a packet tracing mechanism will be described that provides packet tracing information to a mobile network controller. In one aspect, a method includes receiving a data packet sent from a source node to a destination node; determining if the data packet is to be updated with packet tracing information; and upon determining that the data packet is to be updated, updating the packet tracing information of the data packet to include identification of the network device and an ingress timestamp of the data packet at the network device for a corresponding network controller to determining network routing policies.Type: GrantFiled: October 1, 2021Date of Patent: August 22, 2023Assignee: Cisco Technology, Inc.Inventors: Clarence Filsfils, Pablo Camarillo Garvia
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Publication number: 20230254246Abstract: A network node receives a data packet. In response to receiving the data packet, the network node performs a lookup on a label stack of the data packet to determine a next hop for the data packet. The network node scans the label stack to identify a Structured Entropy Label (SEL). The SEL includes a Path Tracing Indicator (PTI). The network node computes Midpoint Compressed Data (MCD) as a result of the PTI being set to a pre-defined value. The network node records the MCD in a MCD stack of the data packet by shifting the MCD stack and stamping the MCD on top of the MCD stack. The network node transmits the data packet to the next hop with the recorded MCD stack. The network sink node encapsulates the received data packet to generate an encapsulated data packet and transmits the data packet.Type: ApplicationFiled: April 24, 2023Publication date: August 10, 2023Inventors: Clarence Filsfils, Ahmed Mohamed Ahmed Abdelsalam, Rakesh Gandhi, Pablo Camarillo Garvia
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Patent number: 11716268Abstract: Techniques for optimizing technologies related to network path tracing and network delay measurements are described herein. Some of the techniques may include using an IPv6 header option and/or segment identifier field of a segment list or a TLV of a segment routing header as a telemetry data carrier. The techniques may also include using an SRv6 micro-segment (uSID) instruction to indicate to a node of a network that the node is to perform one or more path tracing actions and encapsulating the packet and forward. Additionally, the techniques may include using short interface identifiers corresponding to node interfaces to trace a packet path through a network. Further, the techniques may include using short timestamps to determine delay measurements associated with sending a packet through a network. In various examples, the techniques described above and herein may be used with each other to optimize network path tracing and delay measurement techniques.Type: GrantFiled: June 10, 2021Date of Patent: August 1, 2023Assignee: Cisco Technology, Inc.Inventors: Clarence Filsfils, Ahmed Mohamed Ahmed Abdelsalam, Rakesh Gandhi, Pablo Camarillo Garvia, Francois Clad
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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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Patent number: 11683265Abstract: A network node receives a data packet. In response to receiving the data packet, the network node performs a lookup on a label stack of the data packet to determine a next hop for the data packet. The network node scans the label stack to identify a Structured Entropy Label (SEL). The SEL includes a Path Tracing Indicator (PTI). The network node computes Midpoint Compressed Data (MCD) as a result of the PTI being set to a pre-defined value. The network node records the MCD in a MCD stack of the data packet by shifting the MCD stack and stamping the MCD on top of the MCD stack. The network node transmits the data packet to the next hop with the recorded MCD stack. The network sink node encapsulates the received data packet to generate an encapsulated data packet and transmits the data packet.Type: GrantFiled: November 11, 2021Date of Patent: June 20, 2023Assignee: Cisco Technology, Inc.Inventors: Clarence Filsfils, Ahmed Mohamed Ahmed Abdelsalam, Rakesh Gandhi, Pablo Camarillo Garvia
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Patent number: 11658847Abstract: In one embodiment, a segment routing and tunnel exchange provides packet forwarding efficiencies in a network, including providing an exchange between a segment routing domain and a packet tunnel domain. One application includes the segment routing and tunnel exchange interfacing segment routing packet forwarding (e.g., in a Evolved Packet Core (EPC) and/or 5-G user plane) and packet tunnel forwarding in access networks (e.g., replacing a portion of a tunnel between an access node and a user plane function for accessing a corresponding data network). In one embodiment, a network provides mobility services using a segment routing data plane that spans segment routing and tunnel exchange(s) and segment routing-enabled user plane functions. One embodiment uses the segment routing data plane without any modification to a (radio) access network (R)AN (e.g., Evolved NodeB, Next Generation NodeB) nor to user equipment (e.g., any end user device).Type: GrantFiled: October 4, 2022Date of Patent: May 23, 2023Assignee: Cisco Technology, Inc.Inventors: Pablo Camarillo Garvia, Hendrikus G. P. Bosch, Clarence Filsfils
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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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Patent number: 11627094Abstract: The present technology is directed to a system and method for implementing network resource partitioning and Quality of Service (QoS) separation through network slicing. Embodiments of the present invention describe scalable network slicing method based on defining Segment Routing Flexible Algorithm to represent a network slice and assigning a distinct QoS policy queue to each of the Flexible Algorithms configured on a network node. Therefore, scalable network slice based queuing is implemented wherein a single packet processing queue is assigned to each Flex-Algorithm based network slice. QoS policy queue may be implemented in a hierarchical fashion by differentiation between flow packets in a single QoS policy queue based on value of experimental bits in the header.Type: GrantFiled: March 20, 2020Date of Patent: April 11, 2023Assignee: Cisco Technology, Inc.Inventors: Clarence Filsfils, Zafar Ali, Pablo Camarillo Garvia, Francois Clad