公开(公告)号：US10057120B2

公开(公告)日：2018-08-21

申请号：US14449923

申请日：2014-08-01

Applicant: Cisco Technology, Inc.

Inventor： Chiajen Tsai ,  Norman Finn ,  Yibin Yang ,  Nagabhushan K. Channabasappa ,  Debashis Patnala Rao

IPC: G06F15/16 ,  H04L12/24 ,  H04L12/721 ,  H04L12/46

CPC classification number: H04L41/0816 ,  H04L12/4687 ,  H04L12/4695 ,  H04L41/12 ,  H04L45/66

Abstract: In one embodiment, a method includes detecting a change in network topology and broadcasting a transient unconditional unpruning message to multiple nodes in the network. The message is configured to instruct each of the nodes receiving the message to start a phase timer in response to the broadcast message; unprune its operational ports; and, upon expiration of the phase timer, prune its ports in accordance with the results of a pruning protocol.

公开(公告)号：US10212074B2

公开(公告)日：2019-02-19

申请号：US15663503

申请日：2017-07-28

Applicant: Cisco Technology, Inc.

Inventor： Chia Tsai ,  Norman W. Finn ,  Yibin Yang ,  Debashis Patnala Rao

IPC: H04L12/753 ,  H04L12/715 ,  H04L12/707 ,  H04L12/803

Abstract: In one embodiment, a multiple spanning tree (MST) region is defined in a network, where the MST region includes a plurality of network nodes interconnected by links. A MST cluster is defined within the MST region, where the MST cluster includes a plurality of network nodes selected from the plurality of network nodes of the MST region. A network node of the MST cluster generates one or more MST bridge protocol data units (BPDUs) that present the MST cluster as a single logical entity to network nodes of the MST region that are not included in the MST cluster, yet enables per-multiple spanning tree instance (per-MSTI) load balancing of traffic across inter-cluster links that connect network nodes included in the MST cluster and network nodes of the MST region that are not included in the MST cluster.

公开(公告)号：US20170331730A1

公开(公告)日：2017-11-16

申请号：US15663503

申请日：2017-07-28

Applicant: Cisco Technology, Inc.

Inventor： Chia Tsai ,  Norman W. Finn ,  Yibin Yang ,  Debashis Patnala Rao

IPC: H04L12/753 ,  H04L12/707 ,  H04L12/715 ,  H04L12/803

CPC classification number: H04L45/48 ,  H04L45/04 ,  H04L45/24 ,  H04L45/46 ,  H04L47/125

Abstract: In one embodiment, a multiple spanning tree (MST) region is defined in a network, where the MST region includes a plurality of network nodes interconnected by links. A MST cluster is defined within the MST region, where the MST cluster includes a plurality of network nodes selected from the plurality of network nodes of the MST region. A network node of the MST cluster generates one or more MST bridge protocol data units (BPDUs) that present the MST cluster as a single logical entity to network nodes of the MST region that are not included in the MST cluster, yet enables per-multiple spanning tree instance (per-MSTI) load balancing of traffic across inter-cluster links that connect network nodes included in the MST cluster and network nodes of the MST region that are not included in the MST cluster.

公开(公告)号：US20150139035A1

公开(公告)日：2015-05-21

申请号：US14080916

申请日：2013-11-15

Applicant: Cisco Technology, Inc.

Inventor： Vipin Jain ,  Suran Saminda de Silva ,  Chiajen Tsai ,  Debashis Patnala Rao ,  Yibin Yang ,  Palathingal Frank ,  Shyam Kapadia ,  Vijay Gopal Krishnan

IPC: H04L12/24

CPC classification number: H04L41/0816 ,  H04L12/467 ,  H04L12/4675

Abstract: A leaf switch of a switch fabric includes multiple ports to connect with respective ones of multiple servers. Virtual local area networks (VLANs) are configured on the leaf switch. Dynamic creation of virtual ports is enabled on the leaf switch for at least one of the VLANs on an as needed basis. The leaf switch receives from a particular server connected to a corresponding one of the ports a notification message that a virtual machine is hosted on the particular server. Responsive to the notification message, the leaf switch dynamically creates a virtual port that associates the corresponding one of the ports with the at least one of the VLANs.

Abstract translation: 交换结构的叶片交换机包括多个端口，用于与多个服务器中的相应服务器进行连接。 虚拟局域网（VLAN）在叶片交换机上配置。 根据需要，在叶片交换机上为至少一个VLAN启用动态创建虚拟端口。 叶片交换机从连接到对应的一个端口的特定服务器接收虚拟机托管在特定服务器上的通知消息。 响应于通知消息，叶片交换机动态地创建将对应的一个端口与至少一个VLAN相关联的虚拟端口。

公开(公告)号：US12218797B1

公开(公告)日：2025-02-04

申请号：US18382911

申请日：2023-10-23

Applicant: Cisco Technology, Inc.

Inventor： Jason David Notari ,  Debashis Patnala Rao ,  Viral Rajeshbhai Barot

IPC: H04L41/0859 ,  H04L41/08 ,  H04L41/0813

Abstract: Techniques and architecture are described for initializing, reviewing/approving, and deploying changes within a network. Each change is associated with a particular change ticket. When a change needs to be rolled back, the original change ticket may be analyzed to determine what actions need to be performed to roll back the change. A plan of the needed actions may then be presented to a reviewer in a rollback ticket. The original change ticket may be cancelled and a new ticket, e.g., the rollback ticket, may be prepared that includes the plan for the rollback, e.g., the one or more actions needed to roll back the initial change. In configurations, a change ticket may include multiple changes and thus, for rollback, either all the changes associated with the change ticket may be rolled back or only the last change or action that was initially made may be rolled back.

公开(公告)号：US20250039049A1

公开(公告)日：2025-01-30

申请号：US18919044

申请日：2024-10-17

Applicant: Cisco Technology, Inc.

Inventor： Jason David Notari ,  Debashis Patnala Rao ,  Viral Rajeshbhai Barot

IPC: H04L41/0859 ,  H04L41/08 ,  H04L41/0813

Abstract: Techniques and architecture are described for initializing, reviewing/approving, and deploying changes within a network. Each change is associated with a particular change ticket. When a change needs to be rolled back, the original change ticket may be analyzed to determine what actions need to be performed to roll back the change. A plan of the needed actions may then be presented to a reviewer in a rollback ticket. The original change ticket may be cancelled and a new ticket, e.g., the rollback ticket, may be prepared that includes the plan for the rollback, e.g., the one or more actions needed to roll back the initial change. In configurations, a change ticket may include multiple changes and thus, for rollback, either all the changes associated with the change ticket may be rolled back or only the last change or action that was initially made may be rolled back.

公开(公告)号：US20250030598A1

公开(公告)日：2025-01-23

申请号：US18382911

申请日：2023-10-23

Applicant: Cisco Technology, Inc.

Inventor： Jason David Notari ,  Debashis Patnala Rao ,  Viral Rajeshbhai Barot

IPC: H04L41/0859 ,  H04L41/08 ,  H04L41/0813

Abstract: Techniques and architecture are described for initializing, reviewing/approving, and deploying changes within a network. Each change is associated with a particular change ticket. When a change needs to be rolled back, the original change ticket may be analyzed to determine what actions need to be performed to roll back the change. A plan of the needed actions may then be presented to a reviewer in a rollback ticket. The original change ticket may be cancelled and a new ticket, e.g., the rollback ticket, may be prepared that includes the plan for the rollback, e.g., the one or more actions needed to roll back the initial change. In configurations, a change ticket may include multiple changes and thus, for rollback, either all the changes associated with the change ticket may be rolled back or only the last change or action that was initially made may be rolled back.

公开(公告)号：US09503325B2

公开(公告)日：2016-11-22

申请号：US14080916

申请日：2013-11-15

Applicant: Cisco Technology, Inc.

Inventor： Vipin Jain ,  Suran Saminda de Silva ,  Chiajen Tsai ,  Debashis Patnala Rao ,  Yibin Yang ,  Palathingal Frank ,  Shyam Kapadia ,  Vijay Gopal Krishnan

IPC: H04L12/24 ,  H04L12/46

CPC classification number: H04L41/0816 ,  H04L12/467 ,  H04L12/4675

Abstract: A leaf switch of a switch fabric includes multiple ports to connect with respective ones of multiple servers. Virtual local area networks (VLANs) are configured on the leaf switch. Dynamic creation of virtual ports is enabled on the leaf switch for at least one of the VLANs on an as needed basis. The leaf switch receives from a particular server connected to a corresponding one of the ports a notification message that a virtual machine is hosted on the particular server. Responsive to the notification message, the leaf switch dynamically creates a virtual port that associates the corresponding one of the ports with the at least one of the VLANs.

Abstract translation: 交换结构的叶片交换机包括多个端口，用于与多个服务器中的相应服务器进行连接。 虚拟局域网（VLAN）在叶片交换机上配置。 根据需要，在叶片交换机上为至少一个VLAN启用动态创建虚拟端口。 叶片交换机从连接到对应的一个端口的特定服务器接收虚拟机托管在特定服务器上的通知消息。 响应于通知消息，叶片交换机动态地创建将对应的一个端口与至少一个VLAN相关联的虚拟端口。

公开(公告)号：US20140344426A1

公开(公告)日：2014-11-20

申请号：US14449923

申请日：2014-08-01

Applicant: Cisco Technology, Inc.

Inventor： Chiajen Tsai ,  Norman Finn ,  Yibin Yang ,  Nagabhushan K. Channabasappa ,  Debashis Patnala Rao

IPC: H04L12/24

CPC classification number: H04L41/0816 ,  H04L12/4687 ,  H04L12/4695 ,  H04L41/12 ,  H04L45/66

Abstract: In one embodiment, a method includes detecting a change in network topology and broadcasting a transient unconditional unpruning message to multiple nodes in the network. The message is configured to instruct each of the nodes receiving the message to start a phase timer in response to the broadcast message; unprune its operational ports; and, upon expiration of the phase timer, prune its ports in accordance with the results of a pruning protocol.

Abstract translation: 在一个实施例中，一种方法包括检测网络拓扑的变化并且向网络中的多个节点广播瞬时无条件的去运行消息。 消息被配置为响应于广播消息指示接收消息的每个节点开始相位定时器; 解除其运营端口; 并且在相位计时器到期后，根据修剪协议的结果修剪其端口。