公开(公告)号：US20150092775A1

公开(公告)日：2015-04-02

申请号：US14563979

申请日：2014-12-08

Applicant: Cisco Technology, Inc.

Inventor： Sami Boutros ,  Yuri Tsier ,  Muthurajah Sivabalan ,  Pradosh Mohapatra ,  Clarence Filsfils ,  John H.W. Bettink ,  Luca Martini

IPC: H04L12/723 ,  H04L12/18

CPC classification number: H04L45/502 ,  H04L12/18 ,  H04L45/04

Abstract: In one embodiment, an access component of a local network edge device receives traffic, and generates a frame for the traffic that includes a remote context label that identifies an access component of the remote network edge device to which the traffic is to be forwarded upon arrival at the remote network edge device, and a virtual circuit label corresponding to a particular virtual service of the traffic. The local network edge device forwards the frame towards the remote network edge device. In another embodiment, the frame may be received at a core component of the remote network edge device, an in response to the remote context label identifying an access component of the remote network edge device, forwarded to the access component, which determines the particular virtual service, and forwards the traffic from the frame out the access component towards an endpoint for the traffic.

Abstract translation: 在一个实施例中，本地网络边缘设备的接入组件接收业务，并且生成包括远程上下文标签的业务的帧，所述远程上下文标签识别到达所述业务将被转发到的远程网络边缘设备的接入组件 在远程网络边缘设备处，以及对应于业务的特定虚拟服务的虚拟电路标签。 本地网络边缘设备将帧转发到远程网络边缘设备。 在另一个实施例中，可以在远程网络边缘设备的核心组件处接收帧，响应于远程上下文标签识别远程网络边缘设备的接入组件，转发到接入组件，其确定特定虚拟 服务，并将来自帧的流量从访问组件转发到流量的端点。

公开(公告)号：US20140341222A1

公开(公告)日：2014-11-20

申请号：US14279659

申请日：2014-05-16

Applicant: Cisco Technology, Inc.

Inventor： Clarence Filsfils ,  Stefano B. Previdi ,  Steven W. Ulrich ,  Ahmed R. Bashandy

IPC: H04L12/723

CPC classification number: H04L45/507 ,  H04L45/04 ,  H04L45/50

Abstract: An apparatus and method for enabling interoperability of segment routing (SR) enabled nodes and LDP enabled nodes in a network domain. In one embodiment, the method may include mapping a first node identifier (ID) to a first segment ID in memory, wherein the first node ID uniquely identifies a first node within a network domain, and wherein the first node is not SR enabled. A message is generated and subsequently transmitted directly or indirectly to another node within the network domain, wherein the message comprises the first node ID mapped to the first segment ID, and wherein the other node is SR enabled.

Abstract translation: 一种用于实现网络域中的段路由（SR）使能节点和启用LDP的节点的互操作性的装置和方法。 在一个实施例中，该方法可以包括将第一节点标识符（ID）映射到存储器中的第一段ID，其中第一节点ID唯一地标识网络域内的第一节点，并且其中第一节点不是SR启用的。 生成消息并随后直接或间接地发送到网络域内的另一个节点，其中消息包括映射到第一段ID的第一节点ID，并且其中另一个节点被启用SR。

公开(公告)号：US20140269721A1

公开(公告)日：2014-09-18

申请号：US14096358

申请日：2013-12-04

Applicant: Cisco Technology, Inc.

Inventor： Ahmed R. Bashandy ,  Clarence Filsfils ,  David D. Ward

IPC: H04L12/723

CPC classification number: H04L41/12 ,  H04L12/4633 ,  H04L45/04 ,  H04L45/12 ,  H04L45/46 ,  H04L45/50 ,  H04L45/507 ,  H04L45/54 ,  H04L45/74 ,  H04L45/745 ,  H04L47/724 ,  H04L49/608

Abstract: An apparatus and method is disclosed for segment routing (SR) over label distribution protocol (LDP). In one embodiment, the method includes a node receiving a packet with an attached segment ID. In response, the node may attach a label to the packet. Thereafter, the node may forward the packet with the attached label and segment ID to another node via a label switched path (LSP).

Abstract translation: 公开了一种用于通过标签分发协议（LDP）的分段路由（SR）的装置和方法。 在一个实施例中，该方法包括接收具有附加段ID的分组的节点。 作为响应，节点可以附加到分组的标签。 此后，节点可以经由标签交换路径（LSP）将具有附加标签和分段ID的分组转发到另一节点。

公开(公告)号：US20140269422A1

公开(公告)日：2014-09-18

申请号：US14211174

申请日：2014-03-14

Applicant: Cisco Technology, Inc.

Inventor： Clarence Filsfils ,  Thomas F. Telkamp ,  David D. Ward ,  Stewart F. Bryant

IPC: H04L12/24 ,  H04L12/721

CPC classification number: H04L41/12 ,  H04L12/4633 ,  H04L45/04 ,  H04L45/12 ,  H04L45/46 ,  H04L45/50 ,  H04L45/507 ,  H04L45/54 ,  H04L45/74 ,  H04L45/745 ,  H04L47/724 ,  H04L49/608

Abstract: A system and method are disclosed for generating segment routing (SR) segment lists. In one embodiment, a node receives information that identifies a path from a first node to a second node. Based on the received path, a set of segment identifiers that encodes the path is generated. A packet that is forwarded along the set of segment identifiers travels the received path.

Abstract translation: 公开了用于生成段路由（SR）段列表的系统和方法。 在一个实施例中，节点接收标识从第一节点到第二节点的路径的信息。 基于接收到的路径，生成一组编码路径的段标识符。 沿着该段标识符转发的分组传送到接收的路径。

公开(公告)号：US20140269421A1

公开(公告)日：2014-09-18

申请号：US14211101

申请日：2014-03-14

Applicant: Cisco Technology, Inc.

Inventor： Stefano B. Previdi ,  Clarence Filsfils

IPC: H04L12/24

CPC classification number: H04L41/12 ,  H04L12/4633 ,  H04L45/04 ,  H04L45/12 ,  H04L45/46 ,  H04L45/50 ,  H04L45/507 ,  H04L45/54 ,  H04L45/74 ,  H04L45/745 ,  H04L47/724 ,  H04L49/608

Abstract: An apparatus and method for path creation element driven dynamic setup of forwarding adjacencies and explicit path. In one embodiment of the method, a node receives an instruction to create a tunnel between the node and another node. The node creates or initiates the creation of the tunnel in response to receiving the instruction, wherein the tunnel comprises a plurality of nodes in data communication between the node and the other node. The node maps a first identifier (ID) to information relating to the tunnel. The node advertises the first ID to other nodes in a network of nodes.

Abstract translation: 用于路径创建元素驱动动态建立转发邻接和显式路径的装置和方法。 在该方法的一个实施例中，节点接收在节点和另一节点之间创建隧道的指令。 所述节点响应于接收到所述指令而创建或发起所述隧道的创建，其中所述隧道包括所述节点与所述另一节点之间的数据通信中的多个节点。 节点将第一标识符（ID）映射到与隧道相关的信息。 节点将第一个ID通告给节点网络中的其他节点。

公开(公告)号：US20140169370A1

公开(公告)日：2014-06-19

申请号：US14047310

申请日：2013-10-07

Applicant: Cisco Technology, Inc.

Inventor： Clarence Filsfils ,  Stewart F. Bryant ,  Daniel C. Frost ,  John W. Evans

IPC: H04L29/06 ,  H04L12/723

CPC classification number: H04L45/50 ,  H04L41/00 ,  H04L45/02 ,  H04L45/26 ,  H04L45/34 ,  H04L45/38 ,  H04L45/42 ,  H04L45/44 ,  H04L45/58 ,  H04L45/66 ,  H04L69/166

Abstract: An apparatus and method is disclosed for segment routing (SR). In one embodiment, the method includes a node creating a segment stack that identifies one segment calculated using a first algorithm and a second segment calculated using a second, different algorithm. The node then attaches this header to a packet and sends it to another node.

Abstract translation: 公开了一种用于段路由（SR）的装置和方法。 在一个实施例中，该方法包括创建段堆栈的节点，其识别使用第一算法计算的一个段和使用第二不同算法计算的第二段。 然后，该节点将该头部附加到分组并将其发送到另一个节点。

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：US20240406086A1

公开(公告)日：2024-12-05

申请号：US18806324

申请日：2024-08-15

Applicant: Cisco Technology, Inc.

Inventor： Clarence Filsfils ,  Ahmed Mohamed Ahmed Abdelsalam ,  Rakesh Gandhi ,  Pablo Camarillo Garvia ,  Francois Clad

IPC: H04L43/0805 ,  H04L41/12 ,  H04L43/0852 ,  H04L43/106 ,  H04L43/12 ,  H04L45/12 ,  H04L45/42 ,  H04L45/741 ,  H04L69/22

Abstract: 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.

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：US12149445B2

公开(公告)日：2024-11-19

申请号：US18352921

申请日：2023-07-14

Applicant: Cisco Technology, Inc.

Inventor： Clarence Filsfils ,  Pablo Camarillo Garvia

IPC: H04L45/74 ,  H04L43/106 ,  H04L45/02 ,  H04L69/22

Abstract: 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.