公开(公告)号：US09825857B2

公开(公告)日：2017-11-21

申请号：US14449007

申请日：2014-07-31

Applicant: Cisco Technology, Inc.

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

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

CPC classification number: H04L45/745 ,  H04L45/16 ,  H04L45/72 ,  H04L45/748 ,  H04L47/33 ,  H04L51/10 ,  H04W28/12 ,  H04W72/005

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：US20160315811A1

公开(公告)日：2016-10-27

申请号：US15199752

申请日：2016-06-30

Applicant: Cisco Technology, Inc.

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

IPC: H04L12/24 ,  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：US20150124817A1

公开(公告)日：2015-05-07

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

CPC classification number: H04L45/74 ,  H04L61/103

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.

Abstract translation: 这里公开的是通过IP网络转发数据的方法。 所述方法可以包括从连接到IP网络的源主机接收分组，识别在分组中指定的目的地主机的IP地址，确定IP分组上指定的目的地主机连接的IP网络上的位置，而不参考 通过使用存储在IP网络上的位置识别信息，将分组转发到目的地主机连接的IP网络上的位置，而不参考分组中指定的MAC地址，来分配给分组中指定的MAC地址。 本文还公开了实现这种技术和操作的相关网络设备以及包括这种网络设备的IP网络。

公开(公告)号：US20150124645A1

公开(公告)日：2015-05-07

申请号：US14486828

申请日：2014-09-15

Applicant: Cisco Technology, Inc.

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

IPC: H04L12/24

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.

Abstract translation: 管理员可以定义或修改一个或多个服务图。 接下来，管理员可以使用控制器向其设备包文件注册服务设备。 然后，控制器可以建立服务设备的能力，并将服务设备分类为具有传统功能或服务标签交换（STS）能力的设备。 然后，控制器可以通过将服务节点填充到服务图中来创建服务图的一个或多个实例。 然后，应用程序所有者可以将其端点组（EPG）附加到由管理员创建的服务图。 然后，可以使用服务图自动地提供网络中的服务，以根据服务图中的信息在服务的相关联的服务链中配置一个或多个节点。

公开(公告)号：US20150124633A1

公开(公告)日：2015-05-07

申请号：US14449007

申请日：2014-07-31

Applicant: Cisco Technology, Inc.

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

IPC: H04L12/741 ,  H04L12/743 ,  H04L12/721

CPC classification number: H04L45/745 ,  H04L45/16 ,  H04L45/72 ,  H04L45/748 ,  H04L47/33 ,  H04L51/10 ,  H04W28/12 ,  H04W72/005

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.

Abstract translation: 公开了用于在网络平台中增加第3层LPM（最长前缀匹配）路由数据库的各种实施例。 在一些实施例中，织物模块（FM）中的芯片组可以被划分成多个组。 通过使用线路卡（LC）上的LPM表，网络流量可以指向FM中的相应银行。 可以根据动态学习的LPM路由，静态地或动态地对LC中的LPM表中的条目进行编程。

公开(公告)号：US20220385568A1

公开(公告)日：2022-12-01

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: H04L45/16 ,  H04L45/7453

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：US20200244483A1

公开(公告)日：2020-07-30

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

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：US10547544B2

公开(公告)日：2020-01-28

申请号：US15855703

申请日：2017-12-27

Applicant: Cisco Technology, Inc.

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

IPC: H04L12/741 ,  H04L12/46 ,  H04L12/721 ,  H04L12/933 ,  G06F9/455

Abstract: Disclosed herein are methods of forwarding packets on a network, such as a leaf-spine network having leaf devices and spine devices. The methods may include receiving a packet at an ingress leaf device, and determining based, at least in part, on a header of the packet whether the packet is to be transmitted to a spine device. The methods may further include ascertaining based, at least in part, on a header of the packet whether to perform encapsulation on the packet, encapsulating the packet according to a result of the ascertaining, and then transmitting the packet to a spine device according to a result of the determining. Also disclosed herein are network apparatuses which include a processor and a memory, at least one of the processor or the memory being configured to perform some or all of the foregoing described methods.

公开(公告)号：US20180048568A1

公开(公告)日：2018-02-15

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

CPC classification number: H04L45/745 ,  H04L45/16 ,  H04L45/72 ,  H04L45/748 ,  H04L47/33 ,  H04L51/10 ,  H04W28/12 ,  H04W72/005

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：US09876715B2

公开(公告)日：2018-01-23

申请号：US14530550

申请日：2014-10-31

Applicant: Cisco Technology, Inc.

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

IPC: H04L12/741 ,  H04L12/46 ,  H04L12/721 ,  H04L12/933 ,  G06F9/455

CPC classification number: H04L45/74 ,  G06F9/45558 ,  G06F2009/45595 ,  H04L12/4633 ,  H04L45/66 ,  H04L49/10

Abstract: Disclosed herein are methods of forwarding packets on a network, such as a leaf-spine network having leaf devices and spine devices. The methods may include receiving a packet at an ingress leaf device, and determining based, at least in part, on a header of the packet whether the packet is to be transmitted to a spine device. The methods may further include ascertaining based, at least in part, on a header of the packet whether to perform encapsulation on the packet, encapsulating the packet according to a result of the ascertaining, and then transmitting the packet to a spine device according to a result of the determining. Also disclosed herein are network apparatuses which include a processor and a memory, at least one of the processor or the memory being configured to perform some or all of the foregoing described methods.