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1. 发明授权

US11546288B2 Techniques for managing software defined networking controller in-band communications in a data center network 有权
公开(公告)号：US11546288B2
公开(公告)日：2023-01-03
申请号：US17174215
申请日：2021-02-11
申请人： Cisco Technology, Inc.
发明人： Vijay Chander , Yibin Yang , Praveen Jain , Munish Mehta
IPC分类号： H04L29/12 , H04L61/2592 , H04L12/46 , H04L45/02 , H04L61/2514 , H04L61/2521
摘要： According to one or more embodiments of this disclosure, a network controller in a data center network establishes a translation table for in-band traffic in a data center network, the translation table resolves ambiguous network addresses based on one or more of a virtual network identifier (VNID), a routable tenant address, or a unique loopback address. The network controller device receives packets originating from applications and/or an endpoints operating in a network segment associated with a VNID. The network controller device translates, using the translation table, unique loopback addresses and/or routable tenant addresses associated with the packets into routable tenant addresses and/or unique loopback addresses, respectively.

2. 发明授权

US10432428B2 Automatic resolution of virtual network instance to VLAN mapping conflicts in dual-homed deployments in a dynamic fabric automation network architecture 有权
公开(公告)号：US10432428B2
公开(公告)日：2019-10-01
申请号：US15785134
申请日：2017-10-16
申请人： Cisco Technology, Inc.
发明人： Shyam Kapadia , Rick Chang , Yibin Yang , Rajesh Babu Nataraja
IPC分类号： H04L12/46 , H04L12/24 , H04L12/931 , H04L12/753
摘要： In accordance with one example embodiment, there is provided a system configured for virtual local area network (VLAN) blocking on a virtual port channel (vPC) member link to handle discrepant virtual network instance (VNI) to VLAN mappings. In other embodiments, the system can be configured for providing Virtual Switch Interface Discovery Protocol (VDP) and virtual switch enhancements to accommodate discrepant VNI to VLAN mappings. In another example embodiment, an apparatus is provided that includes a processor, and a memory coupled to the processor, where the apparatus is configured such that if a server is connected through a virtual port channel, a VDP is used to notify the server of different VNI to VLAN mappings. In another embodiment, the apparatus can extend a VDP Filter Info Field to carry a set of VLANs mapped to a VNI, keyed by leaf MAC addresses that serve as bridge identifiers.

3. 发明授权

US10171507B2 Microsegmentation in heterogeneous software defined networking environments 有权
公开(公告)号：US10171507B2
公开(公告)日：2019-01-01
申请号：US15159379
申请日：2016-05-19
申请人： Cisco Technology, Inc.
发明人： Praveen Jain , Munish Mehta , Saurabh Jain , Yibin Yang
IPC分类号： G06F21/00 , H04L29/06 , H04L12/931 , G06F9/455 , H04L12/713
摘要： Microsegmentation in a heterogeneous software-defined network can be performed by classifying endpoints associated with a first virtualized environment into respective endpoint groups based on respective attributes, and classifying endpoints associated with a second virtualized environment into respective security groups based on respective attributes. Each respective endpoint group can correspond to a respective security group having the same attribute. Each respective endpoint group and corresponding security group can be associated with a respective policy model defining rules for processing associated traffic. Each of the respective security groups can be used to generate a respective network attribute endpoint group, which can include the network addresses of those endpoints in the respective security group. Each respective network attribute endpoint group can inherit the policy model of the respective endpoint group corresponding to the respective security group. Traffic between the endpoints can then be processed based on the various classifications and associated rules.

4. 发明授权

US10057120B2 Transient unpruning for faster layer-two convergence 有权
公开(公告)号：US10057120B2
公开(公告)日：2018-08-21
申请号：US14449923
申请日：2014-08-01
申请人： Cisco Technology, Inc.
发明人： Chiajen Tsai , Norman Finn , Yibin Yang , Nagabhushan K. Channabasappa , Debashis Patnala Rao
IPC分类号： G06F15/16 , H04L12/24 , H04L12/721 , H04L12/46
CPC分类号： H04L41/0816 , H04L12/4687 , H04L12/4695 , H04L41/12 , H04L45/66
摘要： 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.

5. 发明授权

US09742586B2 Intelligent host route distribution for low latency forwarding and ubiquitous virtual machine mobility in interconnected data centers 有权
公开(公告)号：US09742586B2
公开(公告)日：2017-08-22
申请号：US14577052
申请日：2014-12-19
申请人： Cisco Technology, Inc.
发明人： Yibin Yang , Chia Tsai , Liqin Dong
IPC分类号： H04L12/46 , H04L12/713 , H04L12/751
CPC分类号： H04L12/462 , H04L45/02 , H04L45/586
摘要： Techniques are presented for distributing host route information of virtual machines to routing bridges (RBridges). A first RBridge receives a routing message that is associated with a virtual machine and is sent by a second RBridge. The routing message comprises of mobility attribute information associated with a mobility characteristic of the virtual machine obtained from an egress RBridge that distributes the routing message. The first RBridge adds a forwarding table attribute to the routing message that indicates whether or not the first RBridge has host route information associated with the virtual machine in a forwarding table of the first RBridge. The first RBridge also distributes the routing message including the mobility attribute information and the forwarding table attribute, to one or more RBridges in the network.

6. 发明授权

US09686383B2 Synchronization of traffic multiplexing in link aggregation 有权
公开(公告)号：US09686383B2
公开(公告)日：2017-06-20
申请号：US14985146
申请日：2015-12-30
申请人： Cisco Technology, Inc.
发明人： Yuchen Zhou , Richard Stewart , Alex Tsai , Yibin Yang
IPC分类号： G01R31/08 , G06F11/00 , G08C15/00 , H04J1/16 , H04J3/14 , H04L1/00 , H04L12/26 , H04L29/06 , H04L12/707 , H04L12/709 , H04L12/751
CPC分类号： H04L69/28 , H04L45/02 , H04L45/24 , H04L45/245 , H04L69/14 , Y02D50/30
摘要： Synchronization of traffic multiplexing in link aggregation is described. In an embodiment, a first link aggregator and a second link aggregator are associated with a plurality of links. The first link aggregator maintains an identifier for each link indicating at least a state of enabled or disabled. A synchronized clock is established between the first link aggregator and the second link aggregator. A particular link of the plurality of links is transitioned. Wherein, the transitioning is performed by the first link aggregator sending, to the second link aggregator, a first message identifying a particular time to transition the particular link. The first link aggregator receives, from the second link aggregator, a second message indicating that the particular time is acceptable. In response to a determination that the second message indicates that the particular time is acceptable and that the synchronized clock has reached the particular time, transitioning the link.

7. 发明授权

US09313044B2 Multiple mobility domains with VLAN translation in a multi-tenant network environment 有权
标题翻译：在多租户网络环境中具有VLAN转换的多移动域
公开(公告)号：US09313044B2
公开(公告)日：2016-04-12
申请号：US14334413
申请日：2014-07-17
申请人： CISCO TECHNOLOGY, INC.
发明人： Chiajen Tsai , Yibin Yang , Patnala Debashis Rao , Manish Chandra Agrawal , Rick Chang
IPC分类号： H04L12/28 , H04L12/46
CPC分类号： H04L41/0823 , G06F9/45558 , G06F2009/45595 , H04H20/53 , H04L12/4641 , H04L12/467 , H04L12/4675
摘要： 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.
摘要翻译：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。

8. 发明申请

US20160099858A1 Span Session Monitoring 有权
标题翻译：跨度会话监控
公开(公告)号：US20160099858A1
公开(公告)日：2016-04-07
申请号：US14967669
申请日：2015-12-14
申请人： Cisco Technology, Inc.
发明人： Rajagopalan Janakiraman , Yibin Yang , Pags Krishnamoorthy , Padmanabhan Krishnan
IPC分类号： H04L12/26 , H04L12/24
CPC分类号： H04L43/18 , H04L41/12 , H04L43/00 , H04L43/08 , H04L43/12
摘要： A monitoring session associated with a virtual nickname may be established in a TRILL network. A monitoring station may be connected to an edge switch of the TRILL network specifying the virtual nickname for the monitoring session. The monitoring station is set as a destination for the monitoring session and the virtual nickname is flooded throughout the TRILL network. A source may then be configured to the monitoring session by specifying the virtual nickname of the monitoring session without knowing the destination tied to the monitoring session. Network traffic through the source may then be forwarded to the destination tied to the monitoring session.
摘要翻译：可以在TRILL网络中建立与虚拟昵称相关联的监视会话。监控站可以连接到TRILL网络的边缘交换机，指定监视会话的虚拟昵称。监控站被设置为监视会话的目的地，虚拟昵称在整个TRILL网络中泛滥。然后，可以通过在不知道与监视会话相关联的目的地的情况下指定监视会话的虚拟昵称来将源配置为监视会话。然后可以将通过源的网络流量转发到与监视会话相关联的目的地。

9. 发明授权

US09215147B2 Flexible and scalable monitoring in a TRILL network 有权
标题翻译：灵活和可扩展的监控在TRILL网络
公开(公告)号：US09215147B2
公开(公告)日：2015-12-15
申请号：US13942426
申请日：2013-07-15
申请人： Cisco Technology, Inc.
发明人： Rajagopalan Janakiraman , Yibin Yang , Pags Krishnamoorthy , Padmanabhan Krishnan
IPC分类号： H04L12/24 , H04L12/26
CPC分类号： H04L43/18 , H04L41/12 , H04L43/00 , H04L43/08 , H04L43/12
摘要： A monitoring session associated with a virtual nickname may be established in a TRILL network. A monitoring station may be connected to an edge switch of the TRILL network specifying the virtual nickname for the monitoring session. The monitoring station is set as a destination for the monitoring session and the virtual nickname is flooded throughout the TRILL network. A source may then be configured to the monitoring session by specifying the virtual nickname of the monitoring session without knowing the destination tied to the monitoring session. Network traffic through the source may then be forwarded to the destination tied to the monitoring session.
摘要翻译：可以在TRILL网络中建立与虚拟昵称相关联的监视会话。监控站可以连接到TRILL网络的边缘交换机，指定监视会话的虚拟昵称。监控站被设置为监视会话的目的地，虚拟昵称在整个TRILL网络中泛滥。然后，可以通过在不知道与监视会话相关联的目的地的情况下指定监视会话的虚拟昵称来将源配置为监视会话。然后可以将通过源的网络流量转发到与监视会话相关联的目的地。

10. 发明授权

US09203643B2 Methods and apparatuses for rapid trill convergence through integration with layer two gateway port 有权
标题翻译：通过与第二层网关端口集成，实现快速收敛的方法和装置
公开(公告)号：US09203643B2
公开(公告)日：2015-12-01
申请号：US13644100
申请日：2012-10-03
申请人： Cisco Technology, Inc.
发明人： Yibin Yang , Chiajen Tsai , Patnala Debashis Rao , Yuchen Zhou
IPC分类号： H04L12/801 , H04L12/26 , H04L12/24 , H04L12/721 , H04L12/753 , H04L12/46
CPC分类号： H04L12/462 , H04L45/48 , H04L45/66
摘要： 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.
摘要翻译：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。

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