公开(公告)号：US09577939B2

公开(公告)日：2017-02-21

申请号：US14074467

申请日：2013-11-07

Applicant: Cisco Technology, Inc.

Inventor： Anand Akella ,  Sanjay Hooda ,  Malik Maiga ,  James Shen ,  Sheshendra Kumar

IPC: H04L12/70 ,  H04L12/803 ,  H04L29/08 ,  H04L12/743 ,  H04L12/707

CPC classification number: H04L47/125 ,  H04L45/24 ,  H04L45/7453 ,  H04L67/1023

Abstract: Techniques are disclosed for determining a preferred hashing algorithm for load balancing physical interface utilization in a network device, such as a switch, configured with a port-channel architecture. While a current hashing algorithm is being applied to network traffic flows, a forwarding engine of the network device retrieves snapshot data of each flow and evaluates the flows against other hashing algorithms. The forwarding engine, for each hashing algorithm result, calculates statistical measures, such as mean, variance, and coefficient of variation. These measures are used to determine the preferred hashing algorithm to subsequently be applied. Once determined, the networking device may notify a user (e.g., a system administrator) of the algorithm.

Abstract translation: 公开了用于确定用于在配置有端口信道架构的网络设备（例如交换机）中负载平衡物理接口利用率的优选散列算法的技术。 当前的散列算法被应用于网络流量时，网络设备的转发引擎检索每个流的快照数据，并根据其他散列算法评估流。 转发引擎对于每个散列算法结果，可以计算统计量，如均值，方差和变异系数。 这些措施用于确定随后应用的首选散列算法。 一旦确定，网络设备可以通知用户（例如，系统管理员）该算法。

公开(公告)号：US10952068B2

公开(公告)日：2021-03-16

申请号：US16779903

申请日：2020-02-03

Applicant: Cisco Technology, Inc.

Inventor： Sanjay Hooda ,  Vrushali Ashtaputre ,  Sudhir Jain ,  Johnson Leong ,  Shree Murthy

IPC: H04W8/26 ,  H04L12/755 ,  H04W8/08 ,  H04L12/721

Abstract: A system and method for fast roaming in one or more enterprise fabric network. The fast roaming involves correlation operations performed in one or more databases managed by control plane of the fabric network to update routing locator entries associated with L2-VNID and L3-VNID in one or more databases when a client moves from behind a first switch to behind a second switch. In some embodiments, the control plane finds the L3-VNID from the L2-VNID. The L3-VNID is used to search for all IP addresses corresponding to a client-MAC. At least new routing locator value that is used in the routing locator entries is provided to the first switch, the second switch, and border nodes associated with the fabric network.

公开(公告)号：US20200169872A1

公开(公告)日：2020-05-28

申请号：US16779903

申请日：2020-02-03

Applicant: Cisco Technology, Inc.

Inventor： Sanjay Hooda ,  Vrushali Ashtaputre ,  Sudhir Jain ,  Johnson Leong ,  Shree Murthy

IPC: H04W8/26 ,  H04W8/08 ,  H04L12/755

Abstract: A system and method for fast roaming in one or more enterprise fabric network. The fast roaming involves correlation operations performed in one or more databases managed by control plane of the fabric network to update routing locator entries associated with L2-VNID and L3-VNID in one or more databases when a client moves from behind a first switch to behind a second switch. In some embodiments, the control plane finds the L3-VNID from the L2-VNID. The L3-VNID is used to search for all IP addresses corresponding to a client-MAC. At least new routing locator value that is used in the routing locator entries is provided to the first switch, the second switch, and border nodes associated with the fabric network.

公开(公告)号：US20200052971A1

公开(公告)日：2020-02-13

申请号：US16058541

申请日：2018-08-08

Applicant: Cisco Technology, Inc.

Inventor： Praveen Nagarajan ,  Shashank Vinchurkar ,  Rajesh Arora ,  Anand Pulicat Gopalakrishnan ,  Leena Shrirang Chunekar ,  Nayan Seth ,  Sanjay Hooda ,  Amey Magar

IPC: H04L12/24

Abstract: In one embodiment, a supervisory device designates a particular networking device among a set of networking devices as a seed device and one or more interfaces of the seed device as discovery interfaces. The supervisory device coordinates, starting from the one or more discovery interfaces of the seed device, discovery of a Layer 2 topology of the set of networking devices, by designating one or more interfaces of a discovered networking device as discovery interfaces. The supervisory device converts, starting from at least one of the network devices farthest from the seed device in the Layer 2 topology and ending with the seed device, links of the Layer 2 topology into Layer 3 links, to form an underlay network.