公开(公告)号：US20180077051A1

公开(公告)日：2018-03-15

申请号：US15266498

申请日：2016-09-15

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Nagendra Kumar Nainar ,  Carlos M. Pignataro ,  Peter Psenak

IPC: H04L12/707 ,  H04W24/06 ,  H04L29/06 ,  H04L12/741

CPC classification number: H04L45/745 ,  H04L45/28 ,  H04L69/22 ,  H04W24/06

Abstract: Methods and systems are disclosed for detection of reroute occurrences in segment routing enabled networks. In one embodiment, a method includes receiving, at a first node in a communications network, a test message comprising a header, where the header comprises one or more segment identifiers. This embodiment of the method further includes detecting a first indicator of a rerouted test path for the message and sending an outgoing message to a node determined using the header, where sending the outgoing message comprises including in the outgoing message a second indicator that the test message has been rerouted. An embodiment of a system includes a network interface adapted for data communication with one or more nodes of a communications network and a processor operably coupled to the network interface and adapted to implement an embodiment of the method.

公开(公告)号：US20180013611A1

公开(公告)日：2018-01-11

申请号：US15206113

申请日：2016-07-08

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Nagendra Kumar Nainar ,  Rajiv Asati ,  Carlos M. Pignataro

IPC: H04L29/12 ,  G06F9/455 ,  H04L12/931 ,  H04L12/721 ,  H04L12/713 ,  H04L12/741

CPC classification number: H04L29/12028 ,  G06F9/455 ,  G06F9/45504 ,  G06F2009/45583 ,  H04L45/32 ,  H04L45/586 ,  H04L45/66 ,  H04L45/745 ,  H04L49/70 ,  H04L61/103 ,  H04L61/1552 ,  H04L61/20 ,  H04L61/6022

Abstract: Aspects of the embodiments are directed to receiving an address resolution protocol (ARP) request message from a requesting virtual machine, the ARP request message comprising a request for a destination address for a destination virtual machine, wherein the destination address comprises one or both of a destination hardware address or a destination media access control address; augmenting the ARP request message with a network service header (NSH), the NSH identifying an ARP service function; and forwarding the augmented ARP request to the ARP service function.

公开(公告)号：US09832127B2

公开(公告)日：2017-11-28

申请号：US14935846

申请日：2015-11-09

Applicant: Cisco Technology, Inc.

Inventor： Noboshige Akiya ,  George L. Swallow ,  Carlos M. Pignataro ,  Nagendra Kumar Nainar

IPC: H04L12/28 ,  H04L12/803 ,  H04L12/723 ,  H04L12/707 ,  H04L12/801 ,  H04L12/753

CPC classification number: H04L47/125 ,  H04L45/24 ,  H04L45/48 ,  H04L45/50 ,  H04L45/507 ,  H04L47/12 ,  H04L47/122

Abstract: The present disclosure provides for carrying downstream mapping information in an echo request message and/or echo reply message, which can describe both IP (Internet Protocol) multipath information and label multipath information. A transit node (e.g., an LSR element) that receives an echo request message from an initiator node determines downstream mapping information, which is returned to the initiator node. Transit node determines whether a newly defined type of multipath information (type 10) should be generated to return the downstream mapping information, based on whether transit node performs load balancing based on labels or IP header information, and whether transit node imposes entropy labels. A multipath information type 10 element includes either IP multipath information or label multipath information, as well as associated label multipath information that includes one or more entropy labels that map to the IP or label multipath information being returned.

公开(公告)号：US20170302663A1

公开(公告)日：2017-10-19

申请号：US15098518

申请日：2016-04-14

Applicant: Cisco Technology, Inc.

Inventor： Nagendra Kumar Nainar ,  Carlos M. Pignataro ,  Rajiv Asati

IPC: H04L29/06 ,  H04L9/32 ,  H04W4/00 ,  H04W60/00

CPC classification number: H04W4/70 ,  H04L9/3236 ,  H04L9/3247 ,  H04L63/123 ,  H04L63/1425 ,  H04L2209/38 ,  H04W12/0052 ,  H04W12/12 ,  H04W60/04

Abstract: In one embodiment, a device in a network receives a network registration request from a particular node. The network registration request comprises information about the particular node. The device causes performance of a validation of the information about the particular node via comparison of the information about the particular node to a distributed block chain that includes information regarding the particular node and one or more other nodes. The device causes an update to the block chain based on the information about the particular node and the validation of the information about the particular node. The device uses the updated block chain to control behavior of the particular node and the one or more other nodes.

公开(公告)号：US20170295109A1

公开(公告)日：2017-10-12

申请号：US15096337

申请日：2016-04-12

Applicant: Cisco Technology, Inc.

Inventor： Charles Calvin Byers ,  Gonzalo Salgueiro ,  Joseph Michael Clarke ,  Carlos M. Pignataro ,  Nagendra Kumar Nainar

IPC: H04L12/911

CPC classification number: H04Q1/00 ,  H04Q1/025

Abstract: In one embodiment, an autonomous carrier transports a fog computing module to an enclosure at a location determined to be in need of a particular fog computing resource, and aligns and anchors the fog computing module to the enclosure, where the aligning and anchoring is based on mating mechanical connectors on the fog computing module and enclosure. One or more electronic components of the fog computing module may then interface to the enclosure due to the anchoring, and the fog computing module activates at the location, accordingly. In one particular embodiment, the particular fog computing resource of the fog computing module is an additive resource to an existing fog computing resource module at the enclosure, and the existing fog computing resource module provides the mechanical connectors and interfaced electronic components of the enclosure.

公开(公告)号：US20170250908A1

公开(公告)日：2017-08-31

申请号：US15056502

申请日：2016-02-29

Applicant: Cisco Technology, Inc.

Inventor： Nagendra Kumar Nainar ,  Richard Furr ,  Carlos Pignataro ,  Joseph Michael Clarke

IPC: H04L12/741 ,  H04L12/46 ,  H04L12/723 ,  H04L12/715

CPC classification number: H04L45/74 ,  H04L12/4633 ,  H04L12/4641 ,  H04L45/04 ,  H04L45/50 ,  H04L45/566 ,  H04L45/64 ,  H04L45/66

Abstract: Presented herein are segment-routing methods and systems that facilitate data plane signaling of a packet as a candidate for capture at various network nodes within a segment routing (SR) network. The signaling occurs in-band, via the data plane—that is, a capture or interrogation signal is embedded within the respective packet that carries a user traffic. The signaling is inserted, preferably when the packet is classified, e.g., at the ingress node of the network, to which subsequent network nodes with the SR network are signaled to capture or further inspect the packet for capture.

公开(公告)号：US20170250907A1

公开(公告)日：2017-08-31

申请号：US15056483

申请日：2016-02-29

Applicant: Cisco Technology, Inc.

Inventor： Carlos Pignataro ,  Richard Furr ,  Nagendra Kumar Nainar ,  Joseph Michael Clarke

IPC: H04L12/741

CPC classification number: H04L45/74 ,  H04L43/028 ,  H04L43/04 ,  H04L43/10

Abstract: Presented herein are methods and systems that facilitate data plane signaling of a packet as a candidate for capture at various network nodes within an IPv6 network. The signaling occurs in-band, via the data plane—that is, a capture or interrogation signal is embedded within the respective packet (e.g., in the packet header) that carries a user traffic. The signaling is inserted, preferably when the packet is classified, e.g., at the ingress node of the network, to which subsequent network nodes with the IPv6 network are signaled to capture or further inspect the packet for capture.

公开(公告)号：US09722878B2

公开(公告)日：2017-08-01

申请号：US15234794

申请日：2016-08-11

Applicant: Cisco Technology, Inc.

Inventor： Clarence Filsfils ,  David D. Ward ,  Stewart F. Bryant ,  Daniel C. Frost ,  Nagendra Kumar Nainar ,  Carlos M. Pignataro

IPC: H04L12/723 ,  H04L12/24 ,  H04L12/721 ,  H04L12/715 ,  H04L12/741 ,  H04L12/931

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 method, apparatus, and computer readable medium are disclosed. In one embodiment of the method, a packet and a segment ID stack is received at a first segment routing enabled node. The segment ID stack includes a plurality of segment IDs, one or which is a first area-segment ID that identifies a first area of a subdivided segment routing network. An egress interface of the first segment routing enabled node is selected based on the first area-segment ID. Thereafter, the packet is forwarded via the selected egress interface.

公开(公告)号：US09571405B2

公开(公告)日：2017-02-14

申请号：US14631595

申请日：2015-02-25

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Carlos M. Pignataro ,  James N. Guichard ,  Nagendra Kumar Nainar ,  Paul Quinn

IPC: H04L12/851 ,  H04L12/741 ,  H04L12/801 ,  H04L29/06

CPC classification number: H04L47/2441 ,  H04L45/74 ,  H04L47/18 ,  H04L67/327 ,  H04L69/22

Abstract: A method for augmenting metadata of a network service header is disclosed. The method includes receiving, at a first service node, a packet or frame of a traffic flow, wherein the packet has a payload and the network service header including a first metadata and a first service path information for the traffic flow, classifying, by the first service node, at least one of the payload and the first metadata to generate a second metadata different from the first metadata, and augmenting, by the first service node, the first metadata using the second metadata before forwarding the packet or frame to a second service node.

Abstract translation: 公开了一种用于增强网络服务头部的元数据的方法。 该方法包括在第一服务节点处接收业务流的分组或帧，其中所述分组具有有效载荷，并且所述网络服务报头包括所述业务流的第一元数据和第一服务路径信​​息， 第一服务节点，有效载荷和第一元数据中的至少一个，以生成不同于第一元数据的第二元数据，以及在将数据包或帧转发到第二元数据之前由第一服务节点使用第二元数据来扩充第一元数据 服务节点。

公开(公告)号：US20170012865A1

公开(公告)日：2017-01-12

申请号：US14795174

申请日：2015-07-09

Applicant: Cisco Technology, Inc.

Inventor： Nagendra Kumar Nainar ,  Carlos M. Pignataro

IPC: H04L12/721 ,  H04L29/08

CPC classification number: H04L45/38 ,  H04L45/64 ,  H04L47/2483 ,  H04L67/322

Abstract: A computer-implemented method performed at a classifier network element includes receiving a flow of packets subject to a Service Function Path. The Service Function Path defines which service functions a flow will receive and the order in which the service functions will be provided. A service bitmask is generated that indicates that one or more service function will be skipped. The classifier network element encapsulates the flow as a payload with a Network Service Header comprising a Service Function Path identifier, a service index, and the service bitmask.

Abstract translation: 在分类器网元处执行的计算机实现的方法包括接收经受服务功能路径的分组流。 服务功能路径定义流将接收哪些服务功能以及将提供服务功能的顺序。 生成的服务位掩码指示将跳过一个或多个服务功能。 分类器网络元件将流作为具有包括服务功能路径标识符，服务索引和服务位掩码的网络服务头部的有效载荷来封装。