公开(公告)号：US11785053B2

公开(公告)日：2023-10-10

申请号：US16579906

申请日：2019-09-24

Applicant: Cisco Technology, Inc.

Inventor： Clarence Filsfils ,  David Delano Ward ,  Reshad Rahman ,  Subhasri Dhesikan ,  Eric Albin Voit

IPC: H04L29/06 ,  H04L9/40 ,  H04L12/16 ,  H04L45/00 ,  H04L45/50 ,  H04L47/724 ,  H04L69/326

CPC classification number: H04L63/205 ,  H04L12/16 ,  H04L45/22 ,  H04L45/50 ,  H04L47/724 ,  H04L63/1433 ,  H04L69/326

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 determining a path through a plurality of provider nodes within a provider network and determining that the path through the plurality of provider nodes within the provider network is secure. The operations also include receiving, from a customer node, a Resource Reservation Protocol (RSVP) path message comprising an attribute for a security request. The operations further include routing the RSVP path message along the path of the plurality of provider nodes.

公开(公告)号：US11245618B2

公开(公告)日：2022-02-08

申请号：US16392974

申请日：2019-04-24

Applicant: Cisco Technology, Inc.

Inventor： Rishi Chhibber ,  Roshan Lal ,  Rahul Savarapu Parameswaran ,  Subhasri Dhesikan ,  Mankamana Prasad Mishra ,  Stig Ingvar Venaas

IPC: G06F15/173 ,  H04L12/721 ,  H04L12/761 ,  H04L12/733 ,  H04L12/911 ,  H04L12/741 ,  H04L12/801

Abstract: In one illustrative example, a multicast traceroute facility for a plurality of interconnected router nodes which are configured to communicate IP multicast traffic amongst hosts is described. The multicast traceroute facility may be for use in processing a multicast traceroute batch query packet which indicates a batch of multicast traceroute queries of a batch query, for identifying a plurality of traced paths for a batch of IP multicast traffic flows. Each identified traced path may be associated with one or more links, each of which has a link metric that satisfies a requested link metric (e.g. a link bandwidth). Resources for satisfying the requested link metric may be reserved for a predetermined or specified time period. The batch of IP multicast traffic flows may be established via at least some of the interconnected router nodes according to the plurality of traced paths identified from the query packet processing.

公开(公告)号：US11018886B1

公开(公告)日：2021-05-25

申请号：US16136636

申请日：2018-09-20

Applicant: Cisco Technology, Inc.

Inventor： Ijsbrand Wijnands ,  Hendrikus G. P. Bosch ,  Sape Jurriën Mullender ,  Subhasri Dhesikan

IPC: H04L12/18 ,  H04L29/06 ,  H04L12/935

Abstract: An IP multicast group may include a plurality of group members corresponding to a plurality of host receivers that are connected to router nodes of a multicast distribution tree and joined in the multicast group. At least some of the router nodes may store a plurality of group member indicator bits associated with the multicast group. Each group member indicator bit may be assigned to a respective one of the group members and indicate whether the respective group member is reachable downstream from the router node. During IP multicast, the router node may receive an IP multicast message having a destination address field, a source address field, and a payload field. The payload field may include one or more data items of a multicast data stream. The destination address field may include a multicast group address for addressing communications to the multicast group.

公开(公告)号：US20200344155A1

公开(公告)日：2020-10-29

申请号：US16392974

申请日：2019-04-24

Applicant: Cisco Technology, Inc.

Inventor： Rishi Chhibber ,  Roshan Lal ,  Rahul Savarapu Parameswaran ,  Subhasri Dhesikan ,  Mankamana Prasad Mishra ,  Stig Ingvar Venaas

IPC: H04L12/721 ,  H04L12/761 ,  H04L12/801 ,  H04L12/911 ,  H04L12/741 ,  H04L12/733

Abstract: In one illustrative example, a multicast traceroute facility for a plurality of interconnected router nodes which are configured to communicate IP multicast traffic amongst hosts is described. The multicast traceroute facility may be for use in processing a multicast traceroute batch query packet which indicates a batch of multicast traceroute queries of a batch query, for identifying a plurality of traced paths for a batch of IP multicast traffic flows. Each identified traced path may be associated with one or more links, each of which has a link metric that satisfies a requested link metric (e.g. a link bandwidth). Resources for satisfying the requested link metric may be reserved for a predetermined or specified time period. The batch of IP multicast traffic flows may be established via at least some of the interconnected router nodes according to the plurality of traced paths identified from the query packet processing.

公开(公告)号：US10687253B2

公开(公告)日：2020-06-16

申请号：US15700807

申请日：2017-09-11

Applicant: Cisco Technology, Inc.

Inventor： Michael McBride ,  Subhasri Dhesikan ,  Neil Diener ,  David S. Stephenson ,  Rajneesh Kumar

IPC: H04W28/24 ,  H04W28/26

Abstract: Described in an example embodiment is an end-to-end admission control system that allows any rich media application to secure admission control in an environment where there are mixed wireless and wired segments in the network. In particular embodiments, the system includes the integration of Add Traffic Stream (ADDTS) and Resource Reservation Protocol (RSVP) admission control mechanisms, the mapping of parameters between these two mechanisms, the admission control policies, and failure handling for the end-to-end resource control.