公开(公告)号：US20230336480A1

公开(公告)日：2023-10-19

申请号：US17892691

申请日：2022-08-22

Applicant: Cisco Technology, Inc.

Inventor： Arul Murugan Manickam ,  Laxmikantha Reddy Ponnuru ,  Avinash Shah ,  Vishali Somaskanthan

IPC: H04L45/745 ,  H04L47/43 ,  H04L47/2483

CPC classification number: H04L45/745 ,  H04L47/43 ,  H04L47/2483

Abstract: An efficient method to handle fragmented packets in multi-node all-active clusters. In one particular embodiment, a method includes receiving an initial fragment packet at a node in a cluster, creating a secondary flow table, linking the secondary flow table to a primary flow table, determining the primary flow owner of the initial fragment packet, and transmitting initial and succeeding fragment packets out of the cluster through, if possible, the primary flow owner.

公开(公告)号：US11582068B2

公开(公告)日：2023-02-14

申请号：US17091240

申请日：2020-11-06

Applicant: Cisco Technology, Inc.

Inventor： Laxmikantha Reddy Ponnuru ,  Samir Thoria ,  Managa Sunitha Arun Kumar ,  Satyajit Das ,  Ram Dular Singh

IPC: H04L12/46 ,  H04L45/00

Abstract: The present disclosure is directed to a mechanism for optimized application performance in SD-WAN, and includes the steps of receiving initial traffic packets at a first site for transmission to a second site; determining whether a direct tunnel is established between the first site and the second site based on a state of the second site, the state comprising an active state indicating that a direct tunnel is established between the first and second sites or an inactive state indicating that the direct tunnel is not established between the first and second sites; and in response to determining that the direct tunnel is not established, determining that the initial packets satisfy a configured trigger; forwarding the initial packets to the second site via a backup path; establishing the direct tunnel between the first and second sites; and forwarding subsequent traffic packets to the second site via the established direct tunnel.

公开(公告)号：US11522809B2

公开(公告)日：2022-12-06

申请号：US17464348

申请日：2021-09-01

Applicant: Cisco Technology, Inc.

Inventor： Managa Sunitha Arun Kumar ,  Gowri Mahendran Lingam Chandramohan ,  Laxmikantha Reddy Ponnuru ,  Samir Thoria

IPC: G06F9/46 ,  G06F15/16 ,  G06F15/173 ,  H04L47/78 ,  H04L47/762 ,  H04L12/46 ,  H04L43/12 ,  H04L47/80

Abstract: The present disclosure is directed to systems and methods for transport resource allocation using a centralized control policy, the methods including the steps of receiving node characteristics associated with a plurality of nodes; receiving a centralized policy configuration associated with at least one control policy to be applied based on a set of match conditions; identifying a one or more nodes from the plurality of nodes that satisfy, or that are associated with one or more tunnels that satisfy, the set of match conditions; and applying the at least one control policy to the one or more nodes that satisfy, or to the one or more tunnels that satisfy, the set of match conditions, wherein the at least one control policy is configured to override at least one locally-configured bidirectional forwarding detection (BFD) timer; and/or set a maximum number of tunnels for provisioning at the identified one or more nodes.

公开(公告)号：US20220141152A1

公开(公告)日：2022-05-05

申请号：US17464348

申请日：2021-09-01

Applicant: Cisco Technology, Inc.

Inventor： Managa Sunitha Arun Kumar ,  Gowri Mahendran Lingam Chandramohan ,  Laxmikantha Reddy Ponnuru ,  Samir Thoria

IPC: H04L12/911 ,  H04L12/26 ,  H04L12/927 ,  H04L12/923 ,  H04L12/46

Abstract: The present disclosure is directed to systems and methods for transport resource allocation using a centralized control policy, the methods including the steps of receiving node characteristics associated with a plurality of nodes; receiving a centralized policy configuration associated with at least one control policy to be applied based on a set of match conditions; identifying a one or more nodes from the plurality of nodes that satisfy, or that are associated with one or more tunnels that satisfy, the set of match conditions; and applying the at least one control policy to the one or more nodes that satisfy, or to the one or more tunnels that satisfy, the set of match conditions, wherein the at least one control policy is configured to override at least one locally-configured bidirectional forwarding detection (BFD) timer; and/or set a maximum number of tunnels for provisioning at the identified one or more nodes.

公开(公告)号：US20190110214A1

公开(公告)日：2019-04-11

申请号：US15728559

申请日：2017-10-10

Applicant: Cisco Technology, Inc.

Inventor： Naiming Shen ,  Jun Zhuang ,  Laxmikantha Reddy Ponnuru ,  Veeranjaneyulu Pendyala

IPC: H04W24/04 ,  H04L12/931 ,  H04L12/24 ,  H04L29/12 ,  H04W76/02

CPC classification number: H04W24/04 ,  H04L12/462 ,  H04L12/4633 ,  H04L41/0686 ,  H04L45/50 ,  H04L45/66 ,  H04L49/65 ,  H04L61/103 ,  H04L61/6022 ,  H04W40/24 ,  H04W76/12 ,  H04W76/32

Abstract: Disclosed is a method that includes receiving, at a layer 2 switch, a first message to establish a fast re-switch tunnel between the layer 2 switch and a standby wireless controller and receiving, at the layer 2 switch, a second message to trigger use of the fast re-switch tunnel. The switch receives data and forwards the data to the standby wireless controller through the fast re-switch tunnel. Once MAC tables are updated for the standby wireless controller, the fast re-switch tunnel can be torn down.