公开(公告)号：US20210385133A1

公开(公告)日：2021-12-09

申请号：US17407006

申请日：2021-08-19

Applicant: Cisco Technology, Inc.

Inventor： Jason David Notari ,  Manish Chandra Agrawal ,  Liqin Dong ,  Lukas Krattiger ,  Patnala Debashis Rao

IPC: H04L12/24

Abstract: The present technology provides a system, method and computer-readable medium for configuration pattern recognition and inference, directed to a device with an existing configuration, through an extensible policy framework. The policy framework uses a mixture of python template logic and CLI micro-templates as a mask to infer the intent behind an existing device configuration in a bottom-up learning inference process. Unique values for device/network identifiers and addresses as well as other resources are extracted and accounted for. The consistency of devices within the fabric is checked based on the specific policies built into the extensible framework definition. Any inconsistencies found are flagged for user correction or automatically remedied by a network controller. This dynamic configuration pattern recognition ability allows a fabric to grow without being destroyed and re-created, thus new devices with existing configurations may be added and automatically configured to grow a Brownfield fabric.

公开(公告)号：US11558252B2

公开(公告)日：2023-01-17

申请号：US17407006

申请日：2021-08-19

Applicant: Cisco Technology, Inc.

Inventor： Jason David Notari ,  Manish Chandra Agrawal ,  Liqin Dong ,  Lukas Krattiger ,  Patnala Debashis Rao

IPC: H04L41/08 ,  H04L41/0654 ,  H04L41/0816 ,  H04L41/0873 ,  H04L41/0893 ,  H04L41/084

Abstract: The present technology provides a system, method and computer-readable medium for configuration pattern recognition and inference, directed to a device with an existing configuration, through an extensible policy framework. The policy framework uses a mixture of python template logic and CLI micro-templates as a mask to infer the intent behind an existing device configuration in a bottom-up learning inference process. Unique values for device/network identifiers and addresses as well as other resources are extracted and accounted for. The consistency of devices within the fabric is checked based on the specific policies built into the extensible framework definition. Any inconsistencies found are flagged for user correction or automatically remedied by a network controller. This dynamic configuration pattern recognition ability allows a fabric to grow without being destroyed and re-created, thus new devices with existing configurations may be added and automatically configured to grow a Brownfield fabric.

公开(公告)号：US11115278B2

公开(公告)日：2021-09-07

申请号：US16283958

申请日：2019-02-25

Applicant: Cisco Technology, Inc.

Inventor： Jason David Notari ,  Manish Chandra Agrawal ,  Liqin Dong ,  Lukas Krattiger ,  Patnala Debashis Rao

IPC: H04L12/24

Abstract: The present technology provides a system, method and computer-readable medium for configuration pattern recognition and inference, directed to a device with an existing configuration, through an extensible policy framework. The policy framework uses a mixture of python template logic and CLI micro-templates as a mask to infer the intent behind an existing device configuration in a bottom-up learning inference process. Unique values for device/network identifiers and addresses as well as other resources are extracted and accounted for. The consistency of devices within the fabric is checked based on the specific policies built into the extensible framework definition. Any inconsistencies found are flagged for user correction or automatically remedied by a network controller. This dynamic configuration pattern recognition ability allows a fabric to grow without being destroyed and re-created, thus new devices with existing configurations may be added and automatically configured to grow a Brownfield fabric.

公开(公告)号：US20140092780A1

公开(公告)日：2014-04-03

申请号：US13644100

申请日：2012-10-03

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Yibin Yang ,  Chiajen Tsai ,  Patnala Debashis Rao ,  Yuchen Zhou

IPC: H04L12/28

CPC classification number: H04L12/462 ,  H04L45/48 ,  H04L45/66

Abstract: Methods and apparatuses for rapid TRILL convergence are disclosed herein. The methods can be implemented in a network including a plurality of RBridges or in a cloud network environment including a plurality of cloud switch domains. An example method for rapid TRILL convergence can include: Executing a spanning tree protocol (STP) for network topology in a network; and executing a Hello protocol for control and forwarding at the RBridge. The Hello protocol can be configured to elect a designated RBridge and assign an appointed forwarder. The method can also include assigning a transient appointed forwarder during a period of time between convergence of the STP and convergence of the Hello protocol. The transient appointed forwarder can be configured to forward frames in the network during the period of time between convergence of the STP and convergence of the Hello protocol.

Abstract translation: 本文公开了用于快速TRILL收敛的方法和装置。 该方法可以在包括多个RBridge的网络中或在包括多个云交换机域的云网络环境中实现。 快速TRILL融合的示例方法可以包括：对网络中的网络拓扑执行生成树协议（STP）; 并在RBridge执行Hello协议进行控制和转发。 Hello协议可以配置为选择指定的RBridge并分配指定的转发器。 该方法还可以包括在STP的收敛和Hello协议的收敛之间的一段时间内分配临时指定的转发器。 临时指定的转发器可以配置为在STP收敛和Hello协议收敛之间的时间段内转发网络中的帧。

公开(公告)号：US11196632B2

公开(公告)日：2021-12-07

申请号：US16570886

申请日：2019-09-13

Applicant: Cisco Technology, Inc.

Inventor： Patnala Debashis Rao ,  Huilong Huang ,  Deepak Raykar ,  Shyam Kapadia ,  Stephanie Wong

IPC: H04L12/24 ,  H04L12/44

Abstract: The present disclosure provides systems, methods, and non-transitory computer-readable storage media for determining container to leaf switch connectivity information in a data center in a presence of blade switches and servers. In one aspect of the present disclosure, a method of determining container to leaf switch connectivity information of a data center utilizing at least one blade switch and at least one blade server, includes receiving, at a network controller, link connectivity information that includes south-bound neighboring information between the at least one blade switch of the data center and the at least one blade server of the data center; determining, at the network controller, the container to leaf switch connectivity information of the data center, based on the link connectivity information; and generating a visual representation of a topology of the data center based on the container to leaf switch connectivity information.

公开(公告)号：US09313044B2

公开(公告)日：2016-04-12

申请号：US14334413

申请日：2014-07-17

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Chiajen Tsai ,  Yibin Yang ,  Patnala Debashis Rao ,  Manish Chandra Agrawal ,  Rick Chang

IPC: H04L12/28 ,  H04L12/46

CPC classification number: H04L41/0823 ,  G06F9/45558 ,  G06F2009/45595 ,  H04H20/53 ,  H04L12/4641 ,  H04L12/467 ,  H04L12/4675

Abstract: An example method for facilitating multiple mobility domains with VLAN translation in a multi-tenant network environment is provided and includes detecting attachment of a first virtual machine on a first port and a second virtual machine on a second port of a network element, the first port and the second port being configured with a first mobility domain and a second mobility domain, respectively, and the first and second virtual machines being configured on a same original VLAN, determining whether the original VLAN falls within a pre-configured VLAN range, translating the original VLAN to a first VLAN on the first port corresponding to the first mobility domain and to a second VLAN on the second port corresponding to the second mobility domain, and segregating traffic on the original VLAN into the first VLAN and the second VLAN according to the respective mobility domains for per-port VLAN significance.

Abstract translation: 提供了一种用于在多租户网络环境中促进具有VLAN转换的多个移动性域的示例性方法，并且包括检测第一虚拟机在网元的第二端口上的第一端口和第二虚拟机上的附件，第一端口 并且第二端口分别被配置有第一移动性域和第二移动性域，并且第一和第二虚拟机被配置在相同的原始VLAN上，确定原始VLAN是否落在预配置的VLAN范围内，翻译 原始VLAN到对应于第一移动性域的第一端口上的第一VLAN和对应于第二移动性域的第二端口上的第二VLAN，并且根据原始VLAN将原始VLAN上的流量分为第一VLAN和第二VLAN 各端口VLAN的移动性域。

公开(公告)号：US09203643B2

公开(公告)日：2015-12-01

申请号：US13644100

申请日：2012-10-03

Applicant: Cisco Technology, Inc.

Inventor： Yibin Yang ,  Chiajen Tsai ,  Patnala Debashis Rao ,  Yuchen Zhou

IPC: H04L12/801 ,  H04L12/26 ,  H04L12/24 ,  H04L12/721 ,  H04L12/753 ,  H04L12/46

CPC classification number: H04L12/462 ,  H04L45/48 ,  H04L45/66

Abstract: Methods and apparatuses for rapid TRILL convergence are disclosed herein. The methods can be implemented in a network including a plurality of RBridges or in a cloud network environment including a plurality of cloud switch domains. An example method for rapid TRILL convergence can include: Executing a spanning tree protocol (STP) for network topology in a network; and executing a Hello protocol for control and forwarding at the RBridge. The Hello protocol can be configured to elect a designated RBridge and assign an appointed forwarder. The method can also include assigning a transient appointed forwarder during a period of time between convergence of the STP and convergence of the Hello protocol. The transient appointed forwarder can be configured to forward frames in the network during the period of time between convergence of the STP and convergence of the Hello protocol.

Abstract translation: 本文公开了用于快速TRILL收敛的方法和装置。 该方法可以在包括多个RBridge的网络中或在包括多个云交换机域的云网络环境中实现。 快速TRILL融合的示例方法可以包括：对网络中的网络拓扑执行生成树协议（STP）; 并在RBridge执行Hello协议进行控制和转发。 Hello协议可以配置为选择指定的RBridge并分配指定的转发器。 该方法还可以包括在STP的收敛和Hello协议的收敛之间的一段时间内分配临时指定的转发器。 临时指定的转发器可以配置为在STP收敛和Hello协议收敛之间的时间段内转发网络中的帧。

公开(公告)号：US11956123B1

公开(公告)日：2024-04-09

申请号：US17489351

申请日：2021-09-29

Applicant: Cisco Technology, Inc.

Inventor： Patnala Debashis Rao ,  Shyam Kapadia ,  Jason David Notari ,  Lukas Krattiger

IPC: H04W40/24 ,  H04L41/0873

CPC classification number: H04L41/0873

Abstract: Techniques for determining that a configuration change in configurations for a network device has occurred to result in changed configurations for the network device. The techniques include creating a policy for the network device by a network controller that manages one or more network devices. The network controller may obtain data from the network device, and update the network device policy based on the obtained data. In some examples, the network controller may compare the network device configurations state with the network controller intent to determine if an Out-of-Band (OOB) configuration change has occurred in the configuration of the network device. Finally, the controller may synchronize the network device to the controller based on the updated policy.

公开(公告)号：US11695640B2

公开(公告)日：2023-07-04

申请号：US17510075

申请日：2021-10-25

Applicant: Cisco Technology, Inc.

Inventor： Patnala Debashis Rao ,  Huilong Huang ,  Deepak Raykar ,  Shyam Kapadia ,  Stephanie Wong

IPC: H04L41/22 ,  H04L41/12 ,  H04L12/44

CPC classification number: H04L41/12 ,  H04L12/44 ,  H04L41/22

Abstract: The present disclosure provides systems, methods, and non-transitory computer-readable storage media for determining container to leaf switch connectivity information in a data center in a presence of blade switches and servers. In one aspect of the present disclosure, a method of determining container to leaf switch connectivity information of a data center utilizing at least one blade switch and at least one blade server, includes receiving, at a network controller, link connectivity information that includes south-bound neighboring information between the at least one blade switch of the data center and the at least one blade server of the data center; determining, at the network controller, the container to leaf switch connectivity information of the data center, based on the link connectivity information; and generating a visual representation of a topology of the data center based on the container to leaf switch connectivity information.

公开(公告)号：US20160204986A1

公开(公告)日：2016-07-14

申请号：US15074906

申请日：2016-03-18

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Chiajen Tsai ,  Yibin Yang ,  Patnala Debashis Rao ,  Manish Chandra Agrawal ,  Rick Chang

IPC: H04L12/24 ,  H04H20/53 ,  G06F9/455 ,  H04L12/46

CPC classification number: H04L41/0823 ,  G06F9/45558 ,  G06F2009/45595 ,  H04H20/53 ,  H04L12/4641 ,  H04L12/467 ,  H04L12/4675

Abstract: An example method for facilitating multiple mobility domains with VLAN translation in a multi-tenant network environment is provided and includes detecting attachment of a first virtual machine on a first port and a second virtual machine on a second port of a network element, the first port and the second port being configured with a first mobility domain and a second mobility domain, respectively, and the first and second virtual machines being configured on a same original VLAN, determining whether the original VLAN falls within a pre-configured VLAN range, translating the original VLAN to a first VLAN on the first port corresponding to the first mobility domain and to a second VLAN on the second port corresponding to the second mobility domain, and segregating traffic on the original VLAN into the first VLAN and the second VLAN according to the respective mobility domains for per-port VLAN significance.