Patents by Inventor Ahmed Mohamed Ahmed Abdelsalam
Ahmed Mohamed Ahmed Abdelsalam 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: 20240163179Abstract: Techniques for monitoring data transport in a network virtualization function (NVF) chain. A path tracing packet is generated having a Midpoint Compressed Data (MCD) to collect path tracing information of the NVF chain. The NVF 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 has a second field that indicates a particular path tracing format to be used. The path tracing packet is passed through the NVF chain and is then received back again after passing through the NVF chain. Data collected by the path tracing packet is analyzed to determine which NVF nodes the path tracing packet passed through, and the amount of time taken for the path tracing packet to pass through, the NVF chain.Type: ApplicationFiled: January 25, 2024Publication date: May 16, 2024Inventors: Clarence Filsfils, Ahmed Mohamed Ahmed Abdelsalam, Pablo Camarillo Garvia, Sonia Ben Ayed
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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: 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: 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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Publication number: 20230009602Abstract: Disclosed are systems, apparatuses, methods, and computer-readable media to measure performance of distinct paths of a network. A method includes determining a collection of hashes of a network based on a network probe event, each hash in the collection of hashes corresponding to a distinct path from a first edge device to a second edge device through the network; transmitting a collection of probes from the first edge device in the network, wherein each probe in the collection of probes is assigned a hash selected from the collection of hashes; receiving probes from the collection of probes at the second edge device; and determining a network performance of each distinct path through the network.Type: ApplicationFiled: April 22, 2022Publication date: January 12, 2023Inventors: Clarence Filsfils, Pablo Camarillo Garvia, Ahmed Mohamed Ahmed Abdelsalam, Karen Michele Cadora
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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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Publication number: 20220329518Abstract: 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: November 11, 2021Publication date: October 13, 2022Inventors: Clarence Filsfils, Ahmed Mohamed Ahmed Abdelsalam, Rakesh Gandhi, Pablo Camarillo Garvia
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Patent number: 11424986Abstract: In one embodiment, a method, by a network apparatus of a first domain network, includes receiving one or more packets from an access network, determining a classification for the packets based on the accounting information, selecting, based on the determined classification, a policy configuration from a plurality of policy configurations for processing the packets, encapsulating the packets with one or more segment identifiers in accordance with the selected policy configuration, and sending the encapsulated packets to a network slice or a second network slice in a second domain network based on the one or more segment identifiers.Type: GrantFiled: October 24, 2019Date of Patent: August 23, 2022Assignee: CISCO TECHNOLOGY, INC.Inventors: Clarence Filsfils, Francois Clad, Pablo Camarillo Garvia, Ahmed Mohamed Ahmed Abdelsalam
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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: 20220173992Abstract: 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 10, 2021Publication date: June 2, 2022Inventors: Clarence Filsfils, Ahmed Mohamed Ahmed Abdelsalam, Rakesh Gandhi, Pablo Camarillo Garvia, Francois Clad
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Publication number: 20220174011Abstract: 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 10, 2021Publication date: June 2, 2022Inventors: Clarence Filsfils, Ahmed Mohamed Ahmed Abdelsalam, Rakesh Gandhi, Pablo Camarillo Garvia, Francois Clad
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Publication number: 20220174004Abstract: Disclosed are systems, apparatuses, methods, and computer-readable media to encode network functions in a packet header. A method includes receiving a first packet from a source device that is to be delivered to a destination address through a network; determining a route to the destination address; identifying at least one network function for the first packet; encapsulating the first packet in a second packet, wherein a header of the second packet includes the route to the destination address in a destination address field and local processing metadata associated with the at least one network function in a source address field; and forwarding the second packet to a next network node of the network identified in the destination address.Type: ApplicationFiled: November 30, 2021Publication date: June 2, 2022Inventors: Clarence Filsfils, Pablo Camarillo Garvia, Ahmed Mohamed Ahmed Abdelsalam, Francois Clad
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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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Publication number: 20210126831Abstract: In one embodiment, a method, by a network apparatus of a first domain network, includes receiving one or more packets from an access network, determining a classification for the packets based on the accounting information, selecting, based on the determined classification, a policy configuration from a plurality of policy configurations for processing the packets, encapsulating the packets with one or more segment identifiers in accordance with the selected policy configuration, and sending the encapsulated packets to a network slice or a second network slice in a second domain network based on the one or more segment identifiers.Type: ApplicationFiled: October 24, 2019Publication date: April 29, 2021Inventors: Clarence Filsfils, Francois Clad, Pablo Camarillo Garvia, Ahmed Mohamed Ahmed Abdelsalam