公开(公告)号：US11134002B2

公开(公告)日：2021-09-28

申请号：US16659484

申请日：2019-10-21

Applicant: Cisco Technology, Inc.

Inventor： Clarence Filsfils ,  Swadesh Agrawal ,  Zafar Ali ,  Pablo Camarillo Garvia ,  Francois Clad

IPC: H04L12/715 ,  H04L12/749

Abstract: 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., labels, Internet Protocol version 6 addresses).

公开(公告)号：US11050662B2

公开(公告)日：2021-06-29

申请号：US15986174

申请日：2018-05-22

Applicant: Cisco Technology, Inc.

Inventor： Clarence Filsfils ,  Peter Psenak ,  Francois Clad ,  Jose Antonio Liste

IPC: H04L12/725 ,  H04L12/24 ,  H04L12/723 ,  H04L12/721 ,  H04L12/717

Abstract: Various implementations disclosed herein enable malleable routing for data packets. For example, in various implementations, a method of routing a type of data packets is performed by a device. In some implementations, the device includes a non-transitory memory and one or more processors coupled with the non-transitory memory. In some implementations, the method includes determining a routing criterion to transmit a set of data packets across a network. In some implementations, the method includes identifying network nodes and communication links in the network that satisfy the routing criterion. In some implementations, the method includes determining a route for the set of data packets through the network nodes and the communication links that satisfy the routing criterion. In some implementations, the method includes configuring the network nodes that are on the route with configuration information that allows the set of data packets to propagate along the route.

公开(公告)号：US11012350B2

公开(公告)日：2021-05-18

申请号：US16513379

申请日：2019-07-16

Applicant: Cisco Technology, Inc.

Inventor： Clarence Filsfils ,  Pablo Camarillo Garvia ,  Francois Clad ,  Swadesh Agrawal ,  Zafar Ali

IPC: H04L12/723 ,  H04L12/715 ,  H04L12/46 ,  H04L12/749 ,  H04L12/721

Abstract: Network interworking with no cross-domain state may be provided. First, an edge node may receive a packet from an intermediate node in a first domain. The edge node may be between the first domain and a second domain. Next, the edge node may pop, in response to a first Service Identifier (SID) in the packet, headers corresponding to the first domain from the packet. The edge node may then push, in response to the first SID, a label stack corresponding to the second domain onto the packet. The first SID may include data corresponding to the label stack. Then the edge node may route the packet to the second domain destine to an end node in the second domain.

公开(公告)号：US20210111999A1

公开(公告)日：2021-04-15

申请号：US17130336

申请日：2020-12-22

Applicant: Cisco Technology, Inc.

Inventor： Rakesh Gandhi ,  Clarence Filsfils ,  Sagar Soni ,  Patrick Khordoc

IPC: H04L12/721 ,  H04L12/723 ,  H04L29/06 ,  H04L12/26 ,  H04L12/813 ,  H04L12/741

Abstract: Techniques for in-situ passive performance measurement are described. In one embodiment, a method includes receiving a data packet at a first network element, determining whether measurement information is to be collected for the data packet, providing one or more measurement fields for the data packet based on a determination that measurement information is to be collected for the data packet in which at least one measurement field identifies a measurement type, and forwarding the data packet to a second network element. The method further includes determining, by the second network element, the measurement type for the data packet, and performing one or more actions based on the measurement type.

公开(公告)号：US10904365B2

公开(公告)日：2021-01-26

申请号：US15794334

申请日：2017-10-26

Applicant: Cisco Technology, Inc.

Inventor： Andre Jean-Marie Surcouf ,  Clarence Filsfils ,  Francois Clad

IPC: H04L29/06 ,  G06F9/455 ,  H04L12/931 ,  H04L12/24

Abstract: Aspects of the disclosed technology provide virtualized solutions for processing media frames. A process of the disclosed technology can include steps for receiving unprocessed media packets, de-packetizing the unprocessed media packets to produce unprocessed media frames, and sending the unprocessed media frames to a virtual media application. In some aspects, the process may further include steps for processing the unprocessed media frames, using the virtual media application, to produce processed media frames. Systems and machine-readable media are also provided.

公开(公告)号：US20210021513A1

公开(公告)日：2021-01-21

申请号：US16513379

申请日：2019-07-16

Applicant: Cisco Technology, Inc.

Inventor： Clarence Filsfils ,  Pablo Camarillo Garvia ,  Francois Clad ,  Swadesh Agrawal ,  Zafar Ali

IPC: H04L12/723 ,  H04L12/715 ,  H04L12/46 ,  H04L12/749

Abstract: Network interworking with no cross-domain state may be provided. First, an edge node may receive a packet from an intermediate node in a first domain. The edge node may be between the first domain and a second domain. Next, the edge node may pop, in response to a first Service Identifier (SID) in the packet, headers corresponding to the first domain from the packet. The edge node may then push, in response to the first SID, a label stack corresponding to the second domain onto the packet. The first SID may include data corresponding to the label stack. Then the edge node may route the packet to the second domain destine to an end node in the second domain.

公开(公告)号：US20200322325A1

公开(公告)日：2020-10-08

申请号：US16574771

申请日：2019-09-18

Applicant: Cisco Technology Inc.

Inventor： Clarence Filsfils ,  Marc Portoles Comeras ,  David Delano Ward ,  Alberto Rodriguez Natal

IPC: H04L29/06

Abstract: In one embodiment, an apparatus of a LISP environment includes one or more processors and computer-readable non-transitory storage media coupled to the one or more processors. The computer-readable non-transitory storage media include instructions that, when executed by the one or more processors, cause the one or more processors to perform operations including receiving an attestation token from a first component of the LISP environment. The operations also include encoding the attestation token using a LISP message format. The operations further include distributing the encoded attestation token with a LISP signaling message to a third component of the LISP environment.

公开(公告)号：US20200322264A1

公开(公告)日：2020-10-08

申请号：US16717717

申请日：2019-12-17

Applicant: Cisco Technology, Inc.

Inventor： Francois Clad ,  David Delano Ward ,  Clarence Filsfils

IPC: H04L12/721 ,  H04L12/707 ,  H04L12/725 ,  H04L29/06

Abstract: In one embodiment, a method includes a method includes receiving, by a headend node, network traffic. The method also includes determining, by the headend node, that the network traffic matches a service route. The method further includes steering, by the headend node, the network traffic into an SR-TE policy. The SR-TE policy is associated with the service route and includes a security level constraint.

公开(公告)号：US10778816B2

公开(公告)日：2020-09-15

申请号：US16019286

申请日：2018-06-26

Applicant: Cisco Technology, Inc.

Inventor： Clarence Filsfils ,  Francois Clad ,  Pablo Camarillo Garvia ,  David Delano Ward

IPC: H04L12/741 ,  H04L12/46 ,  H04L29/06 ,  H04L29/08 ,  H04L12/721 ,  H04L29/12 ,  H04L12/931 ,  H04L12/749 ,  H04L12/26

Abstract: In one embodiment, new Segment Routing capabilities are used in the steering of packets through Segment Routing nodes in a network. A Segment List includes a set of one or more Segment List (SL) Groups, each of which identifies one or more Segments contiguously or non-contiguously stored in the Segment List (or stored across multiple Segment Lists) of a Segment Routing packet. Each SL Group typically includes one Segment that is encoded as a Segment Identifier, and may include Segments that are Extended Values. The steering order of SL Groups is not required to be the same order as they are listed in the Segment List, as the value of Segments Left may be increased, remain the same, or decreased (possibly to skip a next SL Group) and possibly based on the result of an evaluation of a conditional expression.

公开(公告)号：US10652144B2

公开(公告)日：2020-05-12

申请号：US15866176

申请日：2018-01-09

Applicant: Cisco Technology, Inc.

Inventor： Clarence Filsfils ,  Ahmed Refaat Bashandy ,  Syed Kamran Raza ,  Darren Dukes ,  Patrice Brissette ,  Jisu Bhattacharya

IPC: H04L12/721 ,  H04L12/755 ,  H04L12/741 ,  H04L12/749

Abstract: 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.