公开(公告)号：US20240214292A1

公开(公告)日：2024-06-27

申请号：US18146852

申请日：2022-12-27

Applicant: Cisco Technology, Inc.

Inventor： Mankamana Prasad Mishra ,  Anuj Budhiraja ,  Sridhar Santhanam ,  Vinish Ramachandran

IPC: H04L43/10 ,  H04L45/50

CPC classification number: H04L43/10 ,  H04L45/50

Abstract: Disclosed are systems, apparatuses, methods, and computer-readable media for tracing multicast paths in hybrid networks. A method for tracing multicast paths in hybrid networks includes intercepting, by an edge device, a first multicast trace request transmitted by a first network device that a source device is connected to for tracing a route between the source device to a receiver device, wherein the first network device receives a message from a multicast tracing client to trace a multicast path from the receiver device to the source device; generating a second multicast trace request based on the format for the core network using information from the first multicast trace request; and transmitting the second multicast trace request from an edge network device to the receiver device using the core network, the second multicast trace request including network information related to network performance between the first network device and the edge network device

公开(公告)号：US20240056379A1

公开(公告)日：2024-02-15

申请号：US17884259

申请日：2022-08-09

Applicant: Cisco Technology, Inc.

Inventor： Mankamana Prasad Mishra ,  Ali Sajassi ,  Nitin Kumar ,  Swadesh Agrawal ,  Anuj Budhiraja

IPC: H04L45/02 ,  H04L45/00 ,  H04L45/28

CPC classification number: H04L45/02 ,  H04L45/22 ,  H04L45/28

Abstract: A system and method for handling multicast traffic in Ethernet Virtual Private Network multi-homed networks includes receiving a first route table for a first route, determining that the first route table is associated with another peer device in the multi-home network, generating a second route table for a second route, determining a route to transmit data and the determined route is the first route or the second route based on the first preference value and the second preference value, and transmitting the data using the determined route.

公开(公告)号：US11671270B2

公开(公告)日：2023-06-06

申请号：US17307264

申请日：2021-05-04

Applicant: Cisco Technology, Inc.

Inventor： Mankamana Prasad Mishra ,  Roshan Lal ,  Anuj Budhiraja

IPC: H04L12/18 ,  H04L45/00 ,  H04L45/16 ,  H04L65/611

CPC classification number: H04L12/18 ,  H04L45/00 ,  H04L45/16 ,  H04L65/611

Abstract: The present disclosure is directed to systems and methods for logical flow aggregation for fragmented multicast flows, the methods including the steps of identifying a plurality of fragmented multicast flows that are logically related as a single flow in a multicast network; generating a plurality of multicast joins associated with the plurality of fragmented multicast flows, wherein each multicast join of the plurality of multicast joins includes a join attribute comprising a common flow identifier that identifies the plurality of fragmented multicast flows as logically related; and selecting a reverse forwarding path toward an upstream device for the plurality of multicast joins.

公开(公告)号：US11997005B2

公开(公告)日：2024-05-28

申请号：US18166775

申请日：2023-02-09

Applicant: Cisco Technology, Inc.

Inventor： Mankamana Prasad Mishra ,  Ijsbrand Wijnands ,  Anuj Budhiraja ,  Ali Sajassi ,  Stephane Litkowski ,  Satya Ranjan Mohanty

IPC: H04L45/00 ,  H04L12/18 ,  H04L12/46 ,  H04L45/02 ,  H04L45/16 ,  H04L45/586

CPC classification number: H04L45/16 ,  H04L12/185 ,  H04L12/1886 ,  H04L12/4641 ,  H04L45/02 ,  H04L45/586

Abstract: A method comprises, at a first router configured to perform Bit Index Explicit Replication (BIER) for forwarding of multicast packets in a network, storing configuration information that indicates that the first router belongs to multiple subdomains of a BIER domain, and is able to forward the multicast packets for a virtual private network on the multiple subdomains. The method further comprises, during an auto-discovery procedure, generating an auto-discovery message to include an auto-discovery route and route attributes that indicate the multiple subdomains, and sending the auto-discovery message to a second router of the virtual private network the network.

公开(公告)号：US20240007390A1

公开(公告)日：2024-01-04

申请号：US17810060

申请日：2022-06-30

Applicant: Cisco Technology, Inc.

Inventor： Mankamana Prasad Mishra ,  Anuj Budhiraja ,  Sridhar Santhanam ,  Sunil Krishnan K

IPC: H04L45/16 ,  H04L45/00 ,  H04L45/02

CPC classification number: H04L45/16 ,  H04L45/26 ,  H04L45/02

Abstract: In one embodiment, a method by a router in a multicast network for multicast mtrace extension to trace one or more any-source multicast (ASM) sources includes transmitting a mtrace (*,G) route to a last hop router, receiving an active source list, and creating a mtrace (S,G) route for a rendezvous point (RP) to initiate based on the received active source list.

公开(公告)号：US11102107B1

公开(公告)日：2021-08-24

申请号：US17090579

申请日：2020-11-05

Applicant: Cisco Technology, Inc.

Inventor： Mankamana Prasad Mishra ,  Ijsbrand Wijnands ,  Anuj Budhiraja ,  Ali Sajassi ,  Stephane Litkowski ,  Satya Ranjan Mohanty

IPC: G06F15/16 ,  H04L12/761 ,  H04L12/713 ,  H04L12/18 ,  H04L12/46 ,  H04L12/751

Abstract: A method comprises, at a first router configured to perform Bit Index Explicit Replication (BIER) for forwarding of multicast packets in a network, storing configuration information that indicates that the first router belongs to multiple subdomains of a BIER domain, and is able to forward the multicast packets for a virtual private network on the multiple subdomains. The method further comprises, during an auto-discovery procedure, generating an auto-discovery message to include an auto-discovery route and route attributes that indicate the multiple subdomains, and sending the auto-discovery message to a second router of the virtual private network the network.

公开(公告)号：US20230188457A1

公开(公告)日：2023-06-15

申请号：US18166775

申请日：2023-02-09

Applicant: Cisco Technology, Inc.

Inventor： Mankamana Prasad Mishra ,  Ijsbrand Wijnands ,  Anuj Budhiraja ,  Ali Sajassi ,  Stephane Litkowski ,  Satya Ranjan Mohanty

IPC: H04L45/16 ,  H04L45/586 ,  H04L12/18 ,  H04L12/46 ,  H04L45/02

CPC classification number: H04L45/16 ,  H04L45/586 ,  H04L12/1886 ,  H04L12/4641 ,  H04L12/185 ,  H04L45/02

Abstract: A method comprises, at a first router configured to perform Bit Index Explicit Replication (BIER) for forwarding of multicast packets in a network, storing configuration information that indicates that the first router belongs to multiple subdomains of a BIER domain, and is able to forward the multicast packets for a virtual private network on the multiple subdomains. The method further comprises, during an auto-discovery procedure, generating an auto-discovery message to include an auto-discovery route and route attributes that indicate the multiple subdomains, and sending the auto-discovery message to a second router of the virtual private network the network.

公开(公告)号：US11627071B2

公开(公告)日：2023-04-11

申请号：US17361510

申请日：2021-06-29

Applicant: Cisco Technology, Inc.

Inventor： Mankamana Prasad Mishra ,  Ijsbrand Wijnands ,  Anuj Budhiraja ,  Ali Sajassi ,  Stephane Litkowski ,  Satya Ranjan Mohanty

IPC: H04L45/00 ,  H04L45/16 ,  H04L45/586 ,  H04L12/18 ,  H04L12/46 ,  H04L45/02

Abstract: A method comprises, at a first router configured to perform Bit Index Explicit Replication (BIER) for forwarding of multicast packets in a network, storing configuration information that indicates that the first router belongs to multiple subdomains of a BIER domain, and is able to forward the multicast packets for a virtual private network on the multiple subdomains. The method further comprises, during an auto-discovery procedure, generating an auto-discovery message to include an auto-discovery route and route attributes that indicate the multiple subdomains, and sending the auto-discovery message to a second router of the virtual private network the network.

公开(公告)号：US20220360462A1

公开(公告)日：2022-11-10

申请号：US17307264

申请日：2021-05-04

Applicant: Cisco Technology, Inc.

Inventor： Mankamana Prasad Mishra ,  Roshan Lal ,  Anuj Budhiraja

IPC: H04L12/18

Abstract: The present disclosure is directed to systems and methods for logical flow aggregation for fragmented multicast flows, the methods including the steps of identifying a plurality of fragmented multicast flows that are logically related as a single flow in a multicast network; generating a plurality of multicast joins associated with the plurality of fragmented multicast flows, wherein each multicast join of the plurality of multicast joins includes a join attribute comprising a common flow identifier that identifies the plurality of fragmented multicast flows as logically related; and selecting a reverse forwarding path toward an upstream device for the plurality of multicast joins.

公开(公告)号：US20250133010A1

公开(公告)日：2025-04-24

申请号：US18492890

申请日：2023-10-24

Applicant: Cisco Technology, Inc.

Inventor： Mankamana Prasad Mishra ,  Nitin Kumar ,  Luc De Ghein ,  Anuj Budhiraja ,  Vinish Ramachandran

IPC: H04L45/00 ,  H04L45/02

Abstract: In some aspects, a method for establishing a multicast-only Fast Re-Route (FRR) (MoFRR) path between a source node and a receiving node in a network, the method includes receiving, by a merged receiving node, a plurality of data packets in a data flow comprising an FRR indicator, wherein the merged receiving node is configured to identify an FRR path for data transmission to the source node, extracting, by the merged receiving node, from the FRR indicator, an identification of the source node as a destination of the data transmission, and a first identifier identifying a first data packet as part of a first flow of a MoFRR, and a second identifier identifying a second data packet as part of a second flow of a MoFRR, transmitting, by the receiving node, the first data packet along a primary data path and the second data packet along a secondary data path.