公开(公告)号：US20240106753A1

公开(公告)日：2024-03-28

申请号：US18525568

申请日：2023-11-30

Applicant: Cisco Technology, Inc.

Inventor： Putu H. SUBAGIO ,  Ravikanth NASIKA ,  Saikat BHATTACHARYA ,  Chih-Tsung HUANG

IPC: H04L45/7453 ,  H04L12/46 ,  H04L47/125 ,  H04L49/00

CPC classification number: H04L45/7453 ,  H04L12/4641 ,  H04L47/125 ,  H04L49/3009

Abstract: Embodiments for handling multidestination traffic in a network are described. It is determined that a destination of a packet, received at a network device, is a multihomed destination. In response to determining that the destination of the packet is a multihomed destination, a hash value is determined from a selection of header values of the packet using a hash function. The packet is forwarded to the destination using a shadow hash forwarding table based at least in part on determining, based on the hash value and a hash forwarding table, that the network device is a designated forwarder for the packet.

公开(公告)号：US20210075666A1

公开(公告)日：2021-03-11

申请号：US17102062

申请日：2020-11-23

Applicant: Cisco Technology, Inc.

Inventor： Putu H. SUBAGIO ,  Ravikanth NASIKA ,  Saikat BHATTACHARYA ,  Sundher NARAYANASWAMY ,  Chih-Tsung HUANG

IPC: H04L12/24 ,  H04L12/18 ,  H04L12/44 ,  H04L12/26

Abstract: A network device receives multi-destination packets from a first node and forwards at least a first of the multi-destination packets to another network device using a first multi-destination tree with respect to the network device. The network device detects that a link associated with the first multi-destination tree satisfies one or more criteria and, in response to detecting that the link satisfies the one or more criteria, selects a second multi-destination tree with respect to the network device. The network device forwards at least a second of the multi-destination packets to the other network device using the second multi-destination tree.

公开(公告)号：US20250141802A1

公开(公告)日：2025-05-01

申请号：US19007885

申请日：2025-01-02

Applicant: Cisco Technology, Inc.

Inventor： Putu H. SUBAGIO ,  Ravikanth NASIKA ,  Saikat BHATTACHARYA ,  Chih-Tsung HUANG

IPC: H04L45/7453 ,  G06F16/90 ,  H04L12/46 ,  H04L47/125 ,  H04L49/00

Abstract: Embodiments for handling multidestination traffic in a network are described. It is determined that a destination of a packet, received at a network device, is a multihomed destination. In response to determining that the destination of the packet is a multihomed destination, a hash value is determined from one or more header values of the packet using a hash function. The device refrains from forwarding the packet to the destination using a shadow hash forwarding table and the has value based on determining that the network device is not a designated forwarder for the packet, where the shadow hash forwarding table is used rather than a hash forward table based at least in part on determining that an updated forwarding table has not converged in the network.

公开(公告)号：US20200186465A1

公开(公告)日：2020-06-11

申请号：US16212569

申请日：2018-12-06

Applicant: Cisco Technology, Inc.

Inventor： Ratnananda Ganesh DONTULA VENKATA ,  Ravikanth NASIKA ,  Saikat BHATTACHARYA

IPC: H04L12/741 ,  H04L12/46 ,  H04L29/06 ,  H04L12/947

Abstract: Techniques for utilizing in-band telemetry (INT) in network fabrics are provided. A packet is received at a leaf node in a first logical group of nodes. Upon determining that the first packet was received from a node outside of the first logical group of nodes, the packet is encapsulated with a first header indicating an internal virtual extensible local area network (iVXLAN) identifier associated with the packet, and a second header indicating a policy group is added to the packet. Further, upon determining that a destination of the packet is associated with a second logical group of nodes, a third header is added to the first packet, where the third header stores in-band network telemetry (INT) for the packet, and telemetry data is added to the third header. The packet is transmitted to a spine node in the first logical group of devices.

公开(公告)号：US20220377015A1

公开(公告)日：2022-11-24

申请号：US17817870

申请日：2022-08-05

Applicant: Cisco Technology, Inc.

Inventor： Putu H. SUBAGIO ,  Ravikanth NASIKA ,  Saikat BHATTACHARYA ,  Chih-Tsung HUANG

IPC: H04L45/7453 ,  H04L12/46 ,  H04L49/00 ,  H04L47/125

Abstract: Embodiments for handling multidestination traffic in a network are described. The multidestination traffic includes packets that are in transit to a multihomed destination in the network. Upon determining the destination is multihomed, a network switch determines a hash value from a selection of header values in the network traffic and uses the hash value to determine if the network switch is a designated forwarder for the multihomed destination. The network switch handles the network traffic according a designated forwarder status.

公开(公告)号：US20220368589A1

公开(公告)日：2022-11-17

申请号：US17815250

申请日：2022-07-27

Applicant: Cisco Technology, Inc.

Inventor： Putu H. SUBAGIO ,  Ravikanth NASIKA ,  Saikat BHATTACHARYA ,  Sundher NARAYANASWAMY ,  Chih-Tsung HUANG

IPC: H04L41/0668 ,  H04L12/18 ,  H04L12/44 ,  H04L43/0876 ,  H04L43/16

Abstract: A network device receives multi-destination packets from a first node and forwards at least a first of the multi-destination packets to another network device using a first multi-destination tree with respect to the network device. The network device detects that a link associated with the first multi-destination tree satisfies one or more criteria and, in response to detecting that the link satisfies the one or more criteria, selects a second multi-destination tree with respect to the network device. The network device forwards at least a second of the multi-destination packets to the other network device using the second multi-destination tree.

公开(公告)号：US20200186413A1

公开(公告)日：2020-06-11

申请号：US16212449

申请日：2018-12-06

Applicant: Cisco Technology, Inc.

Inventor： Putu H. SUBAGIO ,  Ravikanth NASIKA ,  Saikat BHATTACHARYA ,  Sundher NARAYANASWAMY ,  Chih-Tsung HUANG

IPC: H04L12/24 ,  H04L12/26 ,  H04L12/44 ,  H04L12/18

Abstract: A network device receives multi-destination packets from a first node and forwards at least a first of the multi-destination packets to another network device using a first multi-destination tree with respect to the network device. The network device detects that a link associated with the first multi-destination tree satisfies one or more criteria and, in response to detecting that the link satisfies the one or more criteria, selects a second multi-destination tree with respect to the network device. The network device forwards at least a second of the multi-destination packets to the other network device using the second multi-destination tree.