公开(公告)号：US10681425B2

公开(公告)日：2020-06-09

申请号：US15827376

申请日：2017-11-30

Applicant: Cisco Technology, Inc.

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

IPC: H04N21/6405 ,  H04L12/46 ,  H04L29/06 ,  H04N21/24 ,  H04N21/222 ,  H04W8/00

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：US20190166407A1

公开(公告)日：2019-05-30

申请号：US15827376

申请日：2017-11-30

Applicant: Cisco Technology, Inc.

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

IPC: H04N21/6405 ,  H04W8/00 ,  H04L12/46

CPC classification number: H04N21/6405 ,  H04L12/4641 ,  H04L65/4076 ,  H04N21/222 ,  H04N21/2402 ,  H04N21/2405 ,  H04W8/005

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：US11917262B2

公开(公告)日：2024-02-27

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: G06F15/16 ,  H04L12/46 ,  H04L65/611 ,  H04N21/222 ,  H04N21/24 ,  H04N21/6405 ,  H04W8/00

CPC classification number: H04N21/6405 ,  H04L12/4641 ,  H04L65/611 ,  H04N21/222 ,  H04N21/2402 ,  H04N21/2405 ,  H04W8/005

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：US20200236444A1

公开(公告)日：2020-07-23

申请号：US16843297

申请日：2020-04-08

Applicant: Cisco Technology, Inc.

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

IPC: H04N21/6405 ,  H04L12/46 ,  H04L29/06 ,  H04N21/24 ,  H04N21/222

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：US11381883B2

公开(公告)日：2022-07-05

申请号：US16843297

申请日：2020-04-08

Applicant: Cisco Technology, Inc.

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

IPC: H04N21/6405 ,  H04N21/24 ,  H04N21/222 ,  H04L12/46 ,  H04L65/611 ,  H04W8/00

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：US20240364555A1

公开(公告)日：2024-10-31

申请号：US18306397

申请日：2023-04-25

Applicant: Cisco Technology, Inc.

Inventor： Tapraj Singh ,  Vijay Krishnaji Tapaskar ,  Praveen Bhagwatula ,  Venkat Garigipati

IPC: H04L12/18 ,  H04L12/44 ,  H04L41/12

CPC classification number: H04L12/185 ,  H04L12/44 ,  H04L41/12

Abstract: Disclosed are systems, apparatuses, methods, and computer-readable media for configuring network groups without software-based processing and management. A method includes: transmitting a topology request from a first leaf node to a first spine node; in response to receiving a network topology reply from a second leaf node, generating a network topology identifying a group of leaf nodes, the network topology reply including network information associated with the second leaf node, and in response to a request to send a message from a first network node connected to the first leaf node to a second network node connected to the second leaf node, transmitting the message to the second leaf node based on the network information from the network topology reply. In some aspects, the first spine node or a second spine node are configured to receive the message and transmit the message to the second leaf node.

公开(公告)号：US11669432B1

公开(公告)日：2023-06-06

申请号：US16932363

申请日：2020-07-17

Applicant: Cisco Technology, Inc.

Inventor： Harshavardhan Parandekar ,  Pratap Pereira ,  Tapraj Singh ,  Jeffrey yi dar Lo ,  Zhijian Zhang

IPC: G06F11/36 ,  G06F8/41

CPC classification number: G06F11/3624 ,  G06F8/44

Abstract: This disclosure describes techniques to compile source code corresponding to a portion of a software program. The techniques include generating first object code by processing the source code. Based at least in part on processing the source code, generating second object code, wherein the second object code, when executed by one or more processors, causes the one or more processors to perform an operation unconditionally bound to a unique identifier of the operation. The described techniques further include generating an indication of a mapping of the unique identifier to the portion of the software program.

公开(公告)号：US11388084B2

公开(公告)日：2022-07-12

申请号：US16514942

申请日：2019-07-17

Applicant: Cisco Technology, Inc.

Inventor： Ali Sajassi ,  Mankamana P. Mishra ,  Samir Thoria ,  Patrice Brissette ,  Mei Zhang ,  Tapraj Singh

IPC: H04L45/00 ,  H04L12/46 ,  H04L45/16 ,  H04L45/7453 ,  H04L45/745 ,  H04L45/50 ,  H04L49/354 ,  H04L45/02 ,  H04L101/677

Abstract: Techniques for routing traffic across different virtual local area networks (VLANs) within a single bridge domain are described. One technique includes receiving at a first network device a packet from a second network device on a first interface of multiple interfaces within a bridge domain at the first network device. Attachment circuit information associated with the packet is determined. An information element that includes an indication of the attachment circuit information is generated. The information element is transmitted to the third network device.

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.