公开(公告)号：US20190037002A1

公开(公告)日：2019-01-31

申请号：US15663658

申请日：2017-07-28

Applicant: Cisco Technology, Inc.

Inventor： Chidambaram Arunachalam ,  Gonzalo Salgueiro ,  Nagendra Kumar Nainar ,  Eric Chen ,  Keith Griffin

IPC: H04L29/06 ,  H04L12/24 ,  H04L29/08 ,  H04L12/911 ,  H04M7/00 ,  H04L12/26

Abstract: Disclosed is a system, method and computer readable medium enabling collaboration service providers to more accurately predict packet loss, jitter and delay based on current session, historical session and user location parameters. The prediction can be used to forecast the occurrence of poor media quality at the current location and potential future locations.

公开(公告)号：US20190013964A1

公开(公告)日：2019-01-10

申请号：US16130631

申请日：2018-09-13

Applicant: Cisco Technology, Inc.

Inventor： Ijsbrand Wijnands ,  Neale D. R. Ranns ,  Gregory J. Shepherd ,  Nagendra Kumar Nainar

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

CPC classification number: H04L12/4625 ,  H04L45/50 ,  H04L45/745

Abstract: Methods and network devices are disclosed for traversal, within a network configured for bit indexed forwarding, of a subnetwork having nodes not configured for bit indexed forwarding. In one embodiment, a method includes receiving, from a first network node not configured for bit indexed forwarding, a data message comprising a local label and a message bit array. Bit values in the message bit array identify intended destination nodes for the message. The embodiment further includes modifying the message bit array to exclude as intended destination nodes for the message any nodes not represented by one or more relative bit positions associated with the local label and stored in an ingress filter data structure. In addition, the embodiment includes forwarding a copy of the data message to a second network node, which is configured for bit indexed forwarding, identified in an accessed entry of a bit indexed forwarding table.

公开(公告)号：US10177995B2

公开(公告)日：2019-01-08

申请号：US15219678

申请日：2016-07-26

Applicant: Cisco Technology, Inc.

Inventor： Nagendra Kumar Nainar ,  Carlos M. Pignataro ,  Joseph M. Clarke

IPC: H04L12/26 ,  H04L12/24

Abstract: An ingress node inserts into a header of a packet service level agreement information and forwards the packet. At an egress node of the network, the packet is received and the service level agreement information is obtained from the header of the packet. The egress node verifies whether there is conformance to a service level agreement based on at least one parameter associated with reception of one or more packets at the egress node and the service level agreement information.

公开(公告)号：US10164875B2

公开(公告)日：2018-12-25

申请号：US15049521

申请日：2016-02-22

Applicant: Cisco Technology, Inc.

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

IPC: H04L12/723 ,  H04L12/741 ,  H04L12/725

Abstract: In one embodiment, a device in a network receives a packet that includes one or more forwarding labels and a service function chaining (SFC) header. The device removes the one or more forwarding labels from the packet. The device inserts an indication of the one or more forwarding labels into metadata of the SFC header. The device forwards the packet with the inserted indication of the one or more forwarding labels to a service function.

公开(公告)号：US20180359176A1

公开(公告)日：2018-12-13

申请号：US15619851

申请日：2017-06-12

Applicant: Cisco Technology, Inc.

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

IPC: H04L12/707 ,  H04L12/703

CPC classification number: H04L45/22 ,  H04L45/123 ,  H04L45/28 ,  H04L69/40

Abstract: In one embodiment, a server has connectivity to a network that includes a plurality of nodes. The server stores a context identifier that is associated with backup path information stored at a particular node of the plurality of nodes, the backup path information indicating a backup path in the network. The server sends to the particular node a probe packet having a data plane instruction label that includes an identifier of the particular node, the context identifier and server identifier information. The context identifier in the probe packet causes the particular node to retrieve the backup path information and send the probe packet to a next hop node in the backup path based on the backup path information. The server determines whether the probe packet is received at the server after traversing the backup path, and validates the backup path for the particular node accordingly.

公开(公告)号：US10103981B2

公开(公告)日：2018-10-16

申请号：US14929350

申请日：2015-11-01

Applicant: Cisco Technology, Inc.

Inventor： Carlos M Pignataro ,  Nagendra Kumar Nainar ,  Neale David Raymond Ranns

IPC: H04L1/00 ,  H04L12/721 ,  H04L29/08 ,  H04L12/707 ,  H04L12/26 ,  H04L12/24

Abstract: In one embodiment, a method, system, and apparatus is for storing an assigned operations, administration and management (OAM) bitstring in a memory in a BIER (Bit Index Explicit Replication) enabled router, the OAM bitstring being assigned to a BIER domain, the semantic of the OAM bitstring being to replicate and forward the OAM bitstring to neighboring bit-forwarding routers (BFRs), generating an OAM probe packet including the OAM bitstring, setting a BFR ID associated with a first BFR as a BIER header bitstring in the OAM probe packet, setting a TTL (time to live) field in the OAM probe packet to be 2, sending the OAM probe packet to a next hop BFR, and performing one of receiving the OAM probe packet back from the first BFR, and taking an alternative action if the OAM probe packet is not received back from the first BFR.

公开(公告)号：US10103976B2

公开(公告)日：2018-10-16

申请号：US14795174

申请日：2015-07-09

Applicant: Cisco Technology, Inc.

Inventor： Nagendra Kumar Nainar ,  Carlos M. Pignataro

IPC: G06F15/173 ,  H04L12/721 ,  H04L12/851 ,  H04L12/715 ,  H04L29/08

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.

公开(公告)号：US20180293363A1

公开(公告)日：2018-10-11

申请号：US15482036

申请日：2017-04-07

Applicant: Cisco Technology, Inc.

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

IPC: G06F21/10 ,  G06F21/12

CPC classification number: G06F21/64 ,  G06F21/10 ,  G06F21/12

Abstract: A server compiles a software program with a randomly generated string to produce compiled code. The server also computes a hash of the compiled code to produce a unique identifier for the software program. Upon receiving a request from a user to download the software program, the server generates a transaction for a blockchain that has a transaction identifier and the transaction including a user identifier for the user and the unique identifier. The server embeds the transaction identifier and the unique identifier with the software program, and downloads the software program to a computing device associated with the user.

公开(公告)号：US10091348B1

公开(公告)日：2018-10-02

申请号：US15659356

申请日：2017-07-25

Applicant: Cisco Technology, Inc.

Inventor： Chidambaram Arunachalam ,  Gonzalo Salgueiro ,  Nagendra Kumar Nainar ,  Eric Chen ,  Keith Griffin

IPC: H04M7/00 ,  H04M3/22 ,  H04L29/06

Abstract: Disclosed is a system and method for forecasting the expected quality of a call. In some examples, a system or method can generate a plurality of scenarios from network metrics, retrieve historical ratings for the network metrics from users, and assign the historical ratings for the network metrics to the plurality of scenarios. The system or method can also filter one or more users based on similarities of the historical ratings for the plurality of scenarios with current network metrics, and forecast an expected call quality based on the historical ratings of the one or more filtered users.

公开(公告)号：US09942053B2

公开(公告)日：2018-04-10

申请号：US14488810

申请日：2014-09-17

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Ijsbrand Wijnands ,  Gregory J. Shepherd ,  Nagendra Kumar Nainar ,  Christian Martin

IPC: H04L12/18 ,  H04L12/761 ,  H04L12/741 ,  H04L12/723 ,  H04L12/705

CPC classification number: H04L12/18 ,  H04L12/1886 ,  H04L45/16 ,  H04L45/18 ,  H04L45/50 ,  H04L45/74

Abstract: Various systems and methods for performing bit indexed explicit replication (BIER) using IPv6. For example, one method involves receiving, at a node, a packet that includes an IP header. The packet also includes a multicast forwarding entry. The method also involves comparing the multicast forwarding entry with forwarding information stored by the node and selecting a neighbor based on the comparing. The method further includes forwarding the packet to the neighbor.