公开(公告)号：US10374952B2

公开(公告)日：2019-08-06

申请号：US15792615

申请日：2017-10-24

Applicant: Cisco Technology, Inc.

Inventor： Ayan Banerjee ,  Sameer Merchant ,  Ramana Mellacheruvu ,  Ramesh V. N. Ponnapalli ,  Srinivasan Ramabadran

IPC: H04L12/745 ,  H04L12/741 ,  H04L12/58 ,  H04W28/12 ,  H04W72/00 ,  H04L12/721 ,  H04L12/801 ,  H04L12/761

Abstract: Various embodiments are disclosed for increasing Layer-3 LPM (longest prefix match) routing database in a network platform. In some embodiments, chipsets in fabric modules (FMs) can be partitioned into multiple banks. Network traffic can be directed towards a corresponding bank in the FMs by using a LPM table on a line card (LC). Entries in the LPM table on the LC can be programmed either statically or dynamically based upon LPM routes that are dynamically learned.

公开(公告)号：US10020989B2

公开(公告)日：2018-07-10

申请号：US15199752

申请日：2016-06-30

Applicant: Cisco Technology, Inc.

Inventor： Navindra Yadav ,  Sameer Merchant ,  Pirabhu Raman ,  Amit Jain

IPC: H04L12/28 ,  H04L12/24 ,  H04L12/743 ,  H04L12/803 ,  H04L12/819 ,  H04L12/26

CPC classification number: H04L41/0806 ,  H04L41/0889 ,  H04L41/12 ,  H04L41/5048 ,  H04L41/5054 ,  H04L43/045 ,  H04L45/54 ,  H04L45/586 ,  H04L45/7453 ,  H04L47/125 ,  H04L47/21

Abstract: An administrator can define or modify one or more service graphs. Next, the administrator can register service appliances along with their device package files with a controller. Then, the controller can establish the capabilities of the service devices, and classify the service devices as legacy or service tag switching (STS) capable devices. Then, the controller can create one or more instances of the service graph, by populating the service nodes into the service graph. Then, the application owner can attach their endpoint groups (EPGs) to the service graphs created by the administrator. Then, a service in the network can be automatically provisioned using the service graph to configure one or more nodes in an associated service chain of the service according to information in the service graph.

公开(公告)号：US09755965B1

公开(公告)日：2017-09-05

申请号：US14477817

申请日：2014-09-04

Applicant: Cisco Technology, Inc.

Inventor： Navindra Yadav ,  Sameer Merchant

IPC: H04L12/54 ,  H04L12/741 ,  H04L12/713

CPC classification number: H04L41/0806 ,  H04L41/0889 ,  H04L41/12 ,  H04L41/5048 ,  H04L41/5054 ,  H04L43/045 ,  H04L45/54 ,  H04L45/586 ,  H04L45/7453 ,  H04L47/125 ,  H04L47/21

Abstract: Systems, methods, and non-transitory computer-readable storage media for forwarding tables for virtual networking devices. The system first identifies local virtual machines hosted on a local host connected to the system, the system having virtual tunneling capabilities. The system then generates a forwarding table for the system. Next, the system populates the forwarding table with local entries including bindings for the local virtual machines hosted on the local host and adds a default route in the forwarding table pointing to a default forwarder function, wherein the default route is configured to handle all non-local traffic relative to the system and the local host.

公开(公告)号：US09654385B2

公开(公告)日：2017-05-16

申请号：US14508779

申请日：2014-10-07

Applicant: Cisco Technology, Inc.

Inventor： Kit Chiu Chu ,  Thomas J. Edsall ,  Navindra Yadav ,  Francisco M. Matus ,  Krishna Doddapaneni ,  Satyam Sinha ,  Sameer Merchant

IPC: H04L12/703 ,  H04L12/26 ,  H04L12/46 ,  H04L12/741 ,  H04L29/12 ,  H04L12/751 ,  H04L29/06 ,  H04L12/58 ,  H04L29/08 ,  H04L12/707 ,  H04L12/709 ,  H04L12/723

CPC classification number: H04L45/28 ,  H04L12/18 ,  H04L12/4633 ,  H04L12/4641 ,  H04L12/4645 ,  H04L41/0654 ,  H04L43/0811 ,  H04L43/0852 ,  H04L43/0894 ,  H04L43/16 ,  H04L45/02 ,  H04L45/021 ,  H04L45/22 ,  H04L45/24 ,  H04L45/245 ,  H04L45/48 ,  H04L45/50 ,  H04L45/64 ,  H04L45/74 ,  H04L45/745 ,  H04L45/7453 ,  H04L47/125 ,  H04L49/70 ,  H04L51/14 ,  H04L61/2503 ,  H04L61/2592 ,  H04L67/10 ,  H04L69/22 ,  H04L2212/00

Abstract: The subject technology addresses the need in the art for improving utilization of network bandwidth in a multicast network environment. More specifically, the disclosed technology addresses the need in the art for extending multipathing to tenant multicast traffic in an IP overlay network, which enables the network to fully utilize available bandwidth for multicast traffic. In some examples, nodes in the overlay network may be connected by virtual or logical links, each of which corresponds to a path, perhaps through many physical links, in the underlying network.

公开(公告)号：US11811555B2

公开(公告)日：2023-11-07

申请号：US17327381

申请日：2021-05-21

Applicant: Cisco Technology, Inc.

Inventor： Kit Chiu Chu ,  Thomas J. Edsall ,  Navindra Yadav ,  Francisco M. Matus ,  Krishna Doddapaneni ,  Satyam Sinha ,  Sameer Merchant

IPC: H04L12/46 ,  H04L45/00 ,  H04L45/24 ,  H04L45/50 ,  H04L51/214 ,  H04L45/16 ,  H04L43/0852 ,  H04L43/0894 ,  H04L43/16 ,  H04L45/745 ,  H04L61/2503 ,  H04L45/02 ,  H04L69/22 ,  H04L67/10 ,  H04L41/0654 ,  H04L43/0811 ,  H04L45/74 ,  H04L49/00 ,  H04L61/2592 ,  H04L12/18 ,  H04L45/48 ,  H04L45/7453 ,  H04L45/021 ,  H04L45/64 ,  H04L47/125

CPC classification number: H04L12/4633 ,  H04L12/18 ,  H04L12/4641 ,  H04L12/4645 ,  H04L41/0654 ,  H04L43/0811 ,  H04L43/0852 ,  H04L43/0894 ,  H04L43/16 ,  H04L45/02 ,  H04L45/021 ,  H04L45/16 ,  H04L45/22 ,  H04L45/24 ,  H04L45/245 ,  H04L45/48 ,  H04L45/50 ,  H04L45/74 ,  H04L45/745 ,  H04L45/7453 ,  H04L49/70 ,  H04L51/214 ,  H04L61/2503 ,  H04L61/2592 ,  H04L67/10 ,  H04L69/22 ,  H04L45/64 ,  H04L47/125 ,  H04L2212/00

Abstract: The subject technology addresses a need for improving utilization of network bandwidth in a multicast network environment. More specifically, the disclosed technology provides solutions for extending multipathing to tenant multicast traffic in an overlay network, which enables greater bandwidth utilization for multicast traffic. In some aspects, nodes in the overlay network can be connected by virtual or logical links, each of which corresponds to a path, perhaps through many physical links, in the underlying network.

公开(公告)号：US20210184972A1

公开(公告)日：2021-06-17

申请号：US17187332

申请日：2021-02-26

Applicant: Cisco Technology, Inc.

Inventor： Sameer Merchant ,  Thomas James Edsall ,  Navindra Yadav

IPC: H04L12/741 ,  H04L29/12

Abstract: Disclosed herein are methods of forwarding data over an IP network. The methods may include receiving a packet from a source host connected to the IP network, identifying the IP address of a destination host designated in the packet, determining the location on the IP network where the destination host designated by the packet is connected, without reference to the MAC address specified in the packet, by using location-identification information stored on the IP network, and forwarding the packet to the location on the IP network where the destination host is connected without reference to the MAC address specified in the packet. Also disclosed herein are related network devices implementing such techniques and operations, as well as IP networks which include such network devices.

公开(公告)号：US11018898B2

公开(公告)日：2021-05-25

申请号：US16846091

申请日：2020-04-10

Applicant: Cisco Technology, Inc.

Inventor： Kit Chiu Chu ,  Thomas J. Edsall ,  Navindra Yadav ,  Francisco M. Matus ,  Krishna Doddapaneni ,  Satyam Sinha ,  Sameer Merchant

IPC: H04L12/46 ,  H04L12/707 ,  H04L12/709 ,  H04L12/723 ,  H04L12/26 ,  H04L12/741 ,  H04L29/12 ,  H04L12/751 ,  H04L29/06 ,  H04L12/58 ,  H04L29/08 ,  H04L12/24 ,  H04L12/931 ,  H04L12/18 ,  H04L12/753 ,  H04L12/743 ,  H04L12/755 ,  H04L12/715 ,  H04L12/803

Abstract: The subject technology addresses a need for improving utilization of network bandwidth in a multicast network environment. More specifically, the disclosed technology provides solutions for extending multipathing to tenant multicast traffic in an overlay network, which enables greater bandwidth utilization for multicast traffic. In some aspects, nodes in the overlay network can be connected by virtual or logical links, each of which corresponds to a path, perhaps through many physical links, in the underlying network.

公开(公告)号：US10951522B2

公开(公告)日：2021-03-16

申请号：US14301239

申请日：2014-06-10

Applicant: Cisco Technology, Inc.

Inventor： Sameer Merchant ,  Thomas James Edsall ,  Navindra Yadav

IPC: H04L12/741 ,  H04L29/12

Abstract: Disclosed herein are methods of forwarding data over an IP network. The methods may include receiving a packet from a source host connected to the IP network, identifying the IP address of a destination host designated in the packet, determining the location on the IP network where the destination host designated by the packet is connected, without reference to the MAC address specified in the packet, by using location-identification information stored on the IP network, and forwarding the packet to the location on the IP network where the destination host is connected without reference to the MAC address specified in the packet. Also disclosed herein are related network devices implementing such techniques and operations, as well as IP networks which include such network devices.

公开(公告)号：US20170214619A1

公开(公告)日：2017-07-27

申请号：US15482437

申请日：2017-04-07

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Kit Chiu Chu ,  Thomas J. Edsall ,  Navindra Yadav ,  Francisco M. Matus ,  Krishna Doddapaneni ,  Satyam Sinha ,  Sameer Merchant

IPC: H04L12/743 ,  H04L12/46 ,  H04L12/753 ,  H04L12/18 ,  H04L12/707

CPC classification number: H04L45/28 ,  H04L12/18 ,  H04L12/4633 ,  H04L12/4641 ,  H04L12/4645 ,  H04L41/0654 ,  H04L43/0811 ,  H04L43/0852 ,  H04L43/0894 ,  H04L43/16 ,  H04L45/02 ,  H04L45/021 ,  H04L45/22 ,  H04L45/24 ,  H04L45/245 ,  H04L45/48 ,  H04L45/50 ,  H04L45/64 ,  H04L45/74 ,  H04L45/745 ,  H04L45/7453 ,  H04L47/125 ,  H04L49/70 ,  H04L51/14 ,  H04L61/2503 ,  H04L61/2592 ,  H04L67/10 ,  H04L69/22 ,  H04L2212/00

Abstract: The subject technology addresses a need for improving utilization of network bandwidth in a multicast network environment. More specifically, the disclosed technology provides solutions for extending multipathing to tenant multicast traffic in an overlay network, which enables greater bandwidth utilization for multicast traffic. In some aspects, nodes in the overlay network can be connected by virtual or logical links, each of which corresponds to a path, perhaps through many physical links, in the underlying network.

公开(公告)号：US10819753B2

公开(公告)日：2020-10-27

申请号：US16567995

申请日：2019-09-11

Applicant: Cisco Technology, Inc.

Inventor： Murukanandam Panchalingam ,  Umamaheswararao Karyampudi ,  Pirabhu Raman ,  Sameer Merchant

IPC: H04L29/06 ,  H04L12/743

Abstract: Disclosed are systems, methods, and computer-readable storage media for guaranteeing symmetric bi-directional policy based redirect of traffic flows. A first switch connected to a first endpoint can receive a first data packet transmitted by the first endpoint to a second endpoint connected to a second switch. The first switch can enforce an ingress data policy to the first data packet by applying a hashing algorithm to a Source Internet Protocol (SIP) value and a Destination Internet Protocol (DIP) value of the first data packet, resulting in a hash value of the first data packet. The first switch can then route the first data packet to a first service node based on the hash value of the first data packet.