公开(公告)号：US20220094645A1

公开(公告)日：2022-03-24

申请号：US17029588

申请日：2020-09-23

Applicant: Cisco Technology, Inc.

Inventor： Riaz Khan ,  Atri Indiresan ,  Manas Pati

IPC: H04L12/939 ,  H04L12/931 ,  H04L12/933 ,  H04L29/08 ,  H04L29/06 ,  G06F13/38

Abstract: An embodiment is directed to switchover operations with a mobile virtualized network device in a mobile device. The mobile virtualized hardware switchover operations may be used to selectively and temporarily provide virtualized control-plane operations to the data-plane of a non-redundant network device undergoing an upgrade or a reboot of its control plane. A non-redundant network device may operate hitless, or near hitless, operation even when its control plane is unavailable.

公开(公告)号：US10798195B2

公开(公告)日：2020-10-06

申请号：US15834341

申请日：2017-12-07

Applicant: Cisco Technology, Inc.

Inventor： Sanjay K. Hooda ,  Prakash Jain ,  Marc P. Comeras ,  Victor M. Moreno ,  Atri Indiresan

IPC: H04L29/08 ,  H04L29/12

Abstract: The embodiments herein push notifications to network devices used by a shared service to which a roaming host in a network fabric is subscribed. For example, a network fabric controller can access a VN policy table which stores the relationships between the virtual networks in the network fabric. Using this table, the controller can identify what shared service VNs (i.e., extranets) can communicate with the host's VN. The controller can push out notifications to the network devices used by the shared service VNs to store the new location of the host. That is, the network devices that locally store a location of the host can update their routing caches to point to the new location of the host. In this manner, the network fabric can reduce the time needed to reconverge on the new location of the host by updating the network devices used by the shared service VNs.

公开(公告)号：US10673737B2

公开(公告)日：2020-06-02

申请号：US15955493

申请日：2018-04-17

Applicant: Cisco Technology, Inc.

Inventor： Atri Indiresan ,  Roberto Kobo ,  Sanjay Kumar Hooda ,  Akshay Sunil Dorwat

IPC: H04W56/00 ,  H04L12/715 ,  H04L12/723 ,  H04L29/12 ,  H04L12/721 ,  H04L12/713

Abstract: Multi-VRF universal device Internet Protocol (IP) address for fabric edge devices may be provided. This address may be used to send and receive packets in a connectivity message for all VRFs on a fabric edge device. First, a request packet may be created by a first network device in response to receiving a connectivity message. The request packet may have a source address corresponding to an address of the first network device and a destination address corresponding to an address of a first client device. Next, the first network device may encapsulate the request packet. The first network device may then forward the encapsulated request packet to a second network device associated with the first client device.

公开(公告)号：US10581738B2

公开(公告)日：2020-03-03

申请号：US15956639

申请日：2018-04-18

Applicant: Cisco Technology, Inc.

Inventor： Atri Indiresan ,  Manas Pati ,  Christophe Rene

IPC: H04L12/741 ,  H04L12/931 ,  H04L12/707 ,  H04L12/46

Abstract: In embodiments disclosed herein involve receiving a first packet, where the first packet originated from a first device on a first virtual local area network (VLAN) in a first plurality of VLANs, where routing is enabled among each of the first plurality of VLANs. A first temporary value is assigned to a first VLAN identifier associated with the first packet, where the first temporary value corresponds to the first plurality of VLANs. Additionally, the first packet is processed based on a plurality of flow tables. Further, a first destination value is assigned to the first VLAN identifier, where the first destination value corresponds to a second VLAN in the first plurality of VLANs, and the first packet is transmitted to a second device on the second VLAN.

公开(公告)号：US20200059457A1

公开(公告)日：2020-02-20

申请号：US16104456

申请日：2018-08-17

Applicant: Cisco Technology, Inc.

Inventor： Syed Khalid Raza ,  Mosaddaq Hussain Turabi ,  Fabio Rodolfo Maino ,  Vina Ermagan ,  Atri Indiresan

IPC: H04L29/06 ,  H04L12/28 ,  H04L12/46

Abstract: A method is performed by an access router of an enterprise network including a first edge router to communicate with a second edge router over a wide area network (WAN). The method includes receiving a packet from a first endpoint, receiving from a mapping service a network location of a second edge router for which the packet is destined and a security association (SA) to encrypt the packet from the access router to the second edge router, and generating for the first edge router one or more path selectors for WAN path selection. The method includes encrypting the packet using the SA, and adding to the encrypted IP packet, in clear text, the path selectors and outer encapsulation including the network location, to produce an encrypted tunnel packet. The method also includes forwarding the encrypted tunnel packet to the second edge router via the first edge router and the WAN.

公开(公告)号：US20190319871A1

公开(公告)日：2019-10-17

申请号：US15955493

申请日：2018-04-17

Applicant: Cisco Technology, Inc.

Inventor： Atri Indiresan ,  Roberto Kobo ,  Sanjay Kumar Hooda ,  Akshay Sunil Dorwat

IPC: H04L12/715 ,  H04L12/723 ,  H04L12/713 ,  H04L12/721 ,  H04L29/12

Abstract: Multi-VRF universal device Internet Protocol (IP) address for fabric edge devices may be provided. This address may be used to send and receive packets in a connectivity message for all VRFs on a fabric edge device. First, a request packet may be created by a first network device in response to receiving a connectivity message. The request packet may have a source address corresponding to an address of the first network device and a destination address corresponding to an address of a first client device. Next, the first network device may encapsulate the request packet. The first network device may then forward the encapsulated request packet to a second network device associated with the first client device.

公开(公告)号：US20180367328A1

公开(公告)日：2018-12-20

申请号：US15792180

申请日：2017-10-24

Applicant: Cisco Technology, Inc.

Inventor： Sanjay Kumar Hooda ,  Prakash C. Jain ,  Rishabh Parekh ,  Atri Indiresan ,  Satish Kondalam ,  Victor Moreno

IPC: H04L12/18 ,  H04L29/12

CPC classification number: H04L12/1886 ,  H04L12/1818 ,  H04L12/185 ,  H04L45/48 ,  H04L45/74 ,  H04L47/2416 ,  H04L61/103 ,  H04L61/2069 ,  H04L61/2084 ,  H04L65/1093

Abstract: A method including determining that network traffic being transmitted is unicast or multicast; mapping to which virtual network and locator address each host belongs; generating leaking data for unicast and multicast traffic, wherein the leaking data indicates that a first virtual network leaks traffic to a second virtual network; receiving a request from the second virtual network to receive traffic from a host in the first virtual network; determining, based on the leaking data and the type of traffic being transmitted, if the first virtual network leaks traffic to the second virtual network; if the first virtual network leaks traffic to the second virtual network, determining a locator address for the host in the first virtual network using the mapping data; and transmitting the locator address for the host to the second virtual network to enable traffic leaking from the host to the second virtual network is disclosed.

公开(公告)号：US20180270114A1

公开(公告)日：2018-09-20

申请号：US15461716

申请日：2017-03-17

Applicant: Cisco Technology, Inc.

Inventor： Atri Indiresan ,  Aniket Ghule ,  Himanshu Jain ,  Mariam Zaim

IPC: H04L12/24

CPC classification number: H04L41/0869 ,  H04L41/0883 ,  H04L43/18

Abstract: Semantic checking of multi-device and protocol configurations based on an extensible rules database for a variety of devices and operating systems may be provided. First, a configuration may be received. Then parent-child hierarchical relationships in the configuration may be determined. Next, a set of rules may be applied to the configuration based upon the determined parent-child hierarchical relationships. A report of errors found and corrective suggestions may then be produced in response to applying the set of rules.

公开(公告)号：US20180091471A1

公开(公告)日：2018-03-29

申请号：US15276818

申请日：2016-09-27

Applicant: Cisco Technology, Inc.

Inventor： Sanjay Kumar Hooda ,  Sandesh Kumar Narappa Bheemanakone ,  Shivangi Sharma ,  Atri Indiresan ,  Kaushik Kumar Dam

IPC: H04L29/12 ,  H04L29/06 ,  H04L29/08 ,  H04L12/24 ,  H04L12/46

CPC classification number: H04L61/2015 ,  H04L12/4633 ,  H04L41/046 ,  H04L61/6022

Abstract: Client address based forwarding of dynamic host configuration protocol response packets may be provided. First, a first relay agent on a first network device may receive a first discovery message associated with a first client device. The first discovery message may include a first discovery message identifier field comprising a first identifier corresponding to the first client device. The first client device may be associated with a subnet. Then the first relay agent may register, with a map server, the first identifier with an address of the first network device and add a gateway address corresponding to the first relay agent to the first discovery message. Next, the first relay agent may encapsulate the first discovery message and forward the encapsulated first discovery message over a network to a border device.