公开(公告)号：US12113640B2

公开(公告)日：2024-10-08

申请号：US18357771

申请日：2023-07-24

Applicant: Cisco Technology, Inc.

Inventor： Mankamana Mishra ,  Swadesh Agrawal ,  Ali Sajassi ,  Ijsbrand Wijnands ,  Samir Thoria

IPC: H04L12/18 ,  H04L45/50 ,  H04L1/00 ,  H04L45/16

CPC classification number: H04L12/1859 ,  H04L12/185 ,  H04L12/1895 ,  H04L45/50 ,  H04L2001/0093 ,  H04L45/16

Abstract: A computer network efficiently provides a multicast network flow to a multicast recipient across a multihomed network element. The multihomed network element includes network devices that receive multicast data from a source of a multicast network flow. Each particular network device that received the multicast data publishes a notification indicating that the multicast network flow is available from the particular network device. The computer network receives a subscription to the multicast network flow from a multicast recipient, and determines whether to bridge the multicast data across the multihomed network element based on a multicast configuration of the computer network. The multihomed network element provides the multicast data to the multicast recipient from at least one of the particular network devices that received the multicast data from the source of the multicast network flow.

公开(公告)号：US11985002B2

公开(公告)日：2024-05-14

申请号：US18052254

申请日：2022-11-03

Applicant: Cisco Technology, Inc.

Inventor： Mankamana Prasad Mishra ,  Ali Sajassi ,  Samir Thoria ,  Krishnaswamy Ananthamurthy ,  Stig Ingvar Venaas

IPC: H04L12/18 ,  H04L12/46 ,  H04L45/16 ,  H04L67/2895

CPC classification number: H04L12/185 ,  H04L12/1886 ,  H04L12/4679 ,  H04L45/16 ,  H04L67/2895

Abstract: In one embodiment, a method is performed. A device may include an interface in communication with a network. The device may determine whether an all-active multi-homed ethernet segment (ES) associated with the interface is enabled. On a condition that an all-active multi-homed ES is enabled, the device may determine an ethernet virtual private network (EVPN) designated forwarder (DF) state of the all-active multi-homed ES. If the all-active multi-homed ES is enabled and has an ethernet virtual private network (EVPN) designated forwarder (DF) state, the device may enter a protocol independent multicast (PIM) designated router (DR) state. If an all-active multi-homed ES is enabled and does not have an EVPN DF state, the device may enter a PIM non-DR state.

公开(公告)号：US20240031281A1

公开(公告)日：2024-01-25

申请号：US18478567

申请日：2023-09-29

Applicant: Cisco Technology, Inc.

Inventor： Samir Thoria ,  Ram Dular Singh ,  Praveen Raju Kariyanahalli ,  Laxmikantha Reddy Ponnuru ,  Ramanathan Lakshmikanthan

IPC: H04L45/50 ,  H04L45/00 ,  H04L45/02 ,  H04L12/46

CPC classification number: H04L45/50 ,  H04L45/22 ,  H04L45/04 ,  H04L12/4641

Abstract: Systems and methods are provided for receiving bandwidth metrics from a plurality of routers on respective link routes in a network, compiling a link database including the bandwidth metrics of each respective link route in the network, selecting a first designated link path from the link database between a first router and a second router based on an application routing policy, the application routing policy being based on a routing metric, providing a first multiprotocol label switching label based on the first designated link path to the first router of the plurality of routers in the network, and restricting network traffic of the first router to the first designated link path provided in the first multiprotocol label switching label.

公开(公告)号：US11778038B2

公开(公告)日：2023-10-03

申请号：US17709877

申请日：2022-03-31

Applicant: Cisco Technology, Inc.

Inventor： Srilatha Tangirala ,  Rahul Hardikar ,  Sheikh Qumruzzaman ,  Ravi Kiran Chintallapudi ,  Samir Thoria ,  Ajeet Pal Singh Gill ,  Vivek Agarwal

IPC: H04L67/141 ,  H04L9/40 ,  H04L45/76 ,  H04L41/122

CPC classification number: H04L67/141 ,  H04L41/122 ,  H04L45/76 ,  H04L63/0428

Abstract: In one embodiment, a method includes onboarding, by an edge router, a first tenant from a network management system and determining, by the edge router, a mapping of a tenant identifier associated with the first tenant to a controller identifier associated with a controller. The method also includes reserving, by the edge router, a port number in a kernel for the first tenant and inserting, by the edge router, the tenant identifier into a first control packet. The method further includes communicating, by the edge router, the first control packet to the controller via an encrypted control connection during a first peering session. The first peering session shares the encrypted control connection with a second peering session.

公开(公告)号：US11695592B2

公开(公告)日：2023-07-04

申请号：US17103588

申请日：2020-11-24

Applicant: Cisco Technology, Inc.

Inventor： Patrice Brissette ,  Samir Thoria ,  Ali Sajassi

IPC: H04L12/28 ,  H04L12/54 ,  H04L12/66 ,  H04L12/46 ,  H04L12/70

CPC classification number: H04L12/56 ,  H04L12/4641 ,  H04L12/66 ,  H04L2012/5641 ,  H04L2012/5642 ,  H04L2012/5648

Abstract: In one embodiment, a method includes receiving a broadcast, unknown-unicast, or multicast (BUM) frame from a connected device, where the BUM frame is associated with a broadcast domain, determining a segment within the broadcast domain associated with the device, adding to the BUM frame a segment identifier that uniquely identifies the segment within the broadcast domain, and causing the BUM frame to be delivered to one or more recipient network apparatuses in a network associated with the broadcast domain, where the segment identifier added to the BUM frame is configured to be used by the one or more recipient network apparatuses to selectively forward the BUM frame to connected devices that are associated with segment identifier.

公开(公告)号：US20220417141A1

公开(公告)日：2022-12-29

申请号：US17805616

申请日：2022-06-06

Applicant: Cisco Technology, Inc.

Inventor： Samir Thoria ,  Ali Sajassi ,  Lukas Krattiger

IPC: H04L45/50 ,  H04L45/64 ,  H04L12/46 ,  H04L12/66 ,  H04L45/00

Abstract: A system and method are disclosed for enabling interoperability between asymmetric and symmetric Integrated Routing and Bridging (IRB) modes. A system is configured to receive a route advertisement, examine the label fields of the route advertisement, and determine whether Layer 2 or Layer 3 information is conveyed. The system is further configured to build a route advertisement to advertise to a second device based on whether Layer 2 or Layer 3 information is conveyed in the first route advertisement.

公开(公告)号：US20220286752A1

公开(公告)日：2022-09-08

申请号：US17751112

申请日：2022-05-23

Applicant: Cisco Technology, Inc.

Inventor： Ali Sajassi ,  Samir Thoria ,  Tapraj Singh ,  Mankamana Prasad Mishra

IPC: H04N21/6405 ,  H04L12/46 ,  H04N21/24 ,  H04N21/222 ,  H04L65/611

Abstract: A method is performed by a first provider edge (PE) of a redundancy group including provider edges configured with an Ethernet virtual private network (EVPN) segment identifier (EVI) and an Ethernet segment identifier (ESI) and that are multi-homed to a customer edge (CE). The method includes, upon receiving from the CE a join request including a group address for a multicast stream, electing a designated forwarder (DF) for the multicast stream. The electing includes: computing for each PE a respective affinity for the DF as a function of a respective address of the PE, the EVI, and the group address; and determining which PE has a largest affinity. The method further includes, if the first PE has the largest affinity or does not have the largest affinity, configuring the first PE as the designated forwarder or not configuring the first PE as the designated forwarder for the multicast stream, respectively.

公开(公告)号：US20210392069A1

公开(公告)日：2021-12-16

申请号：US17343697

申请日：2021-06-09

Applicant: Cisco Technology, Inc.

Inventor： Samir Thoria ,  Neeraj Malhotra ,  Lukas Krattiger ,  Ali Sajassi ,  Rajesh Sharma ,  Kesavan Thiruvenkatasamy ,  Aparna Pattekar

IPC: H04L12/715 ,  H04L12/46

Abstract: This disclosure describes techniques for enabling interoperability between asymmetric and symmetric Integrated Routing and Bridging (IRB) modes. An interfacing component may be configured to receive a first route advertisement from a first edge node in a Layer-2 (L2) fabric. The first route advertisement may correspond to an asymmetric format route, for instance. The interfacing component may be further configured to receive a second route advertisement from a second edge node in a L2/Layer-3 (L3) fabric. The second edge node may be configured for symmetric integrated routing and bridging (IRB). The interfacing component may be configured to re-originate the first route and the second route such that the interfacing component is included as a hop in the resultant routes between the L2 fabric and the L2/L3 fabric.

公开(公告)号：US20210226890A1

公开(公告)日：2021-07-22

申请号：US17182221

申请日：2021-02-22

Applicant: Cisco Technology, Inc.

Inventor： Samir Thoria ,  Ali Sajassi ,  Lukas Krattiger

IPC: H04L12/723 ,  H04L12/715 ,  H04L12/46 ,  H04L12/66 ,  H04L12/721

Abstract: A system and method are disclosed for enabling interoperability between asymmetric and symmetric Integrated Routing and Bridging (IRB) modes. A system is configured to receive a route advertisement, examine the label fields of the route advertisement, and determine whether Layer 2 or Layer 3 information is conveyed. The system is further configured to build a route advertisement to advertise to a second device based on whether Layer 2 or Layer 3 information is conveyed in the first route advertisement.

公开(公告)号：US11025444B2

公开(公告)日：2021-06-01

申请号：US16133000

申请日：2018-09-17

Applicant: Cisco Technology, Inc.

Inventor： Mankamana Mishra ,  Swadesh Agrawal ,  Ali Sajassi ,  Ijsbrand Wijnands ,  Samir Thoria

IPC: H04L12/18 ,  H04L12/723 ,  H04L1/00 ,  H04L12/761

Abstract: A computer network efficiently provides a multicast network flow to a multicast recipient across a multihomed network element. The multihomed network element includes network devices that receive multicast data from a source of a multicast network flow. Each particular network device that received the multicast data publishes a notification indicating that the multicast network flow is available from the particular network device. The computer network receives a subscription to the multicast network flow from a multicast recipient, and determines whether to bridge the multicast data across the multihomed network element based on a multicast configuration of the computer network. The multihomed network element provides the multicast data to the multicast recipient from at least one of the particular network devices that received the multicast data from the source of the multicast network flow.