公开(公告)号：US11736340B2

公开(公告)日：2023-08-22

申请号：US17342899

申请日：2021-06-09

Applicant: Cisco Technology, Inc.

Inventor： Peter Psenak ,  Lester C. Ginsberg ,  Ketan Jivan Talaulikar ,  Clarence Filsfils ,  Francois Clad ,  Stephane Litkowski

IPC: H04L12/24 ,  H04L41/0654 ,  H04L41/0631 ,  H04L41/0686

CPC classification number: H04L41/0654 ,  H04L41/0631 ,  H04L41/0686

Abstract: The present technology is directed to signaling unreachability of a network device, more specifically, a prefix of the network device in network that utilizes route summarization. A pulse trigger agent can detect an unreachability of at least one Provider Edge (PE) device in a network domain of a network and determine that a route summarization is being used within the network where the unreachability of the at least one PE device is hidden by the route summarization. A pulse distribution agent can transmit a failure message informing other PE devices of the unreachability of the at least one PE device.

公开(公告)号：US11489756B2

公开(公告)日：2022-11-01

申请号：US17731610

申请日：2022-04-28

Applicant: Cisco Technology, Inc.

Inventor： Peter Psenak ,  Robert Hanzl ,  Clarence Filsfils ,  Ketan Jivan Talaulikar

IPC: H04L45/12 ,  H04L45/02

Abstract: Various systems and methods for using strict path forwarding. For example, one method involves receiving an advertisement at a node. The advertisement includes a segment identifier (SID). In response to receiving the advertisement, the node determines whether the SID is a strict SID or not. If the SID is a strict SID, the node generates information, such as forwarding information that indicates how to forward packets along a strict shortest path corresponding to the strict SID.

公开(公告)号：US11121961B2

公开(公告)日：2021-09-14

申请号：US16598852

申请日：2019-10-10

Applicant: Cisco Technology, Inc.

Inventor： Peter Psenak ,  Paul William Wells ,  Ketan Jivan Talaulikar ,  Clarence Filsfils

IPC: H04L12/721 ,  H04L29/06

Abstract: In one embodiment, an apparatus includes one or more processors and one or more computer-readable non-transitory storage media coupled to the one or more processors. The one or more computer-readable non-transitory storage media include instructions that, when executed by the one or more processors, cause the apparatus to perform operations including receiving a first type-length-value (TLV) associated with a winning flexible algorithm definition (FAD) from a first element of a network. The operations also include determining a security level for the winning FAD based on the TLV. The operations further include determining a data transmission route through a plurality of elements of the network based on the security level for the winning FAD.

公开(公告)号：US20240430154A1

公开(公告)日：2024-12-26

申请号：US18829447

申请日：2024-09-10

Applicant: Cisco Technology, Inc.

Inventor： Peter Psenak ,  Lester C. Ginsberg ,  Ketan Jivan Talaulikar ,  Clarence Filsfils ,  Francois Clad ,  Stephane Litkowski

IPC: H04L41/0654 ,  H04L41/0631 ,  H04L41/0686

Abstract: The present technology is directed to signaling unreachability of a network device, more specifically, a prefix of the network device in network that utilizes route summarization. A pulse trigger agent can detect an unreachability of at least one Provider Edge (PE) device in a network domain of a network and determine that a route summarization is being used within the network where the unreachability of the at least one PE device is hidden by the route summarization. A pulse distribution agent can transmit a failure message informing other PE devices of the unreachability of the at least one PE device.

公开(公告)号：US12149626B1

公开(公告)日：2024-11-19

申请号：US16678663

申请日：2019-11-08

Applicant: Cisco Technology, Inc.

Inventor： Clarence Filsfils ,  Peter Psenak ,  Ketan Jivan Talaulikar ,  Paul W. Wells

IPC: H04L9/32 ,  H04L9/40 ,  H04L43/0811

Abstract: In one embodiment, a method by an apparatus of a Border Gateway Protocol-Link State (BGP-LS) environment includes receiving an attestation token from a first component and encoding the attestation token in a BGP-LS signaling message. The method further includes sending the BGP-LS signaling message with the encoded attestation token to a second component of the BGP-LS environment.

公开(公告)号：US11671346B2

公开(公告)日：2023-06-06

申请号：US17969890

申请日：2022-10-20

Applicant: Cisco Technology, Inc.

Inventor： Peter Psenak ,  Robert Hanzl ,  Clarence Filsfils ,  Ketan Jivan Talaulikar

IPC: H04L45/12 ,  H04L45/02

CPC classification number: H04L45/12 ,  H04L45/02

Abstract: Various systems and methods for using strict path forwarding. For example, one method involves receiving an advertisement at a node. The advertisement includes a segment identifier (SID). In response to receiving the advertisement, the node determines whether the SID is a strict SID or not. If the SID is a strict SID, the node generates information, such as forwarding information that indicates how to forward packets along a strict shortest path corresponding to the strict SID.

公开(公告)号：US20190312806A1

公开(公告)日：2019-10-10

申请号：US16384219

申请日：2019-04-15

Applicant: Cisco Technology, Inc.

Inventor： Peter Psenak ,  Robert Hanzl ,  Clarence Filsfils ,  Ketan Jivan Talaulikar

IPC: H04L12/721 ,  H04L12/751

Abstract: Various systems and methods for using strict path forwarding. For example, one method involves receiving an advertisement at a node. The advertisement includes a segment identifier (SID). In response to receiving the advertisement, the node determines whether the SID is a strict SID or not. If the SID is a strict SID, the node generates information, such as forwarding information that indicates how to forward packets along a strict shortest path corresponding to the strict SID.

公开(公告)号：US12095651B2

公开(公告)日：2024-09-17

申请号：US17399937

申请日：2021-08-11

Applicant: Cisco Technology, Inc.

Inventor： Peter Psenak ,  Paul William Wells ,  Ketan Jivan Talaulikar ,  Clarence Filsfils

IPC: H04L45/12 ,  H04L9/40

CPC classification number: H04L45/127 ,  H04L63/205

Abstract: In one embodiment, an apparatus includes one or more processors and one or more computer-readable non-transitory storage media coupled to the one or more processors. The one or more computer-readable non-transitory storage media include instructions that, when executed by the one or more processors, cause the apparatus to perform operations including receiving a first type-length-value (TLV) associated with a winning flexible algorithm definition (FAD) from a first element of a network. The operations also include determining a security level for the winning FAD based on the TLV. The operations further include determining a data transmission route through a plurality of elements of the network based on the security level for the winning FAD.

公开(公告)号：US20230396486A1

公开(公告)日：2023-12-07

申请号：US18345246

申请日：2023-06-30

Applicant: Cisco Technology, Inc.

Inventor： Peter Psenak ,  Lester C. Ginsberg ,  Ketan Jivan Talaulikar ,  Clarence Filsfils ,  Francois Clad ,  Stephane Litkowski

IPC: H04L41/0654 ,  H04L41/0631 ,  H04L41/0686

CPC classification number: H04L41/0654 ,  H04L41/0631 ,  H04L41/0686

Abstract: The present technology is directed to signaling unreachability of a network device, more specifically, a prefix of the network device in network that utilizes route summarization. A pulse trigger agent can detect an unreachability of at least one Provider Edge (PE) device in a network domain of a network and determine that a route summarization is being used within the network where the unreachability of the at least one PE device is hidden by the route summarization. A pulse distribution agent can transmit a failure message informing other PE devices of the unreachability of the at least one PE device.

公开(公告)号：US20230043743A1

公开(公告)日：2023-02-09

申请号：US17969890

申请日：2022-10-20

Applicant: Cisco Technology, Inc.

Inventor： Peter Psenak ,  Robert Hanzl ,  Clarence Filsfils ,  Ketan Jivan Talaulikar

IPC: H04L45/12 ,  H04L45/02

Abstract: Various systems and methods for using strict path forwarding. For example, one method involves receiving an advertisement at a node. The advertisement includes a segment identifier (SID). In response to receiving the advertisement, the node determines whether the SID is a strict SID or not. If the SID is a strict SID, the node generates information, such as forwarding information that indicates how to forward packets along a strict shortest path corresponding to the strict SID.