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1. 发明申请

WO2017184530A3 A MAPPING DATABASE SYSTEM FOR USE WITH CONTENT CHUNKS AND METHODS OF ROUTING TO CONTENT IN AN IP NETWORK 审中-公开
标题翻译：与内容块一起使用的映射数据库系统以及在IP网络中路由内容的方法
公开(公告)号：WO2017184530A3
公开(公告)日：2017-10-26
申请号：PCT/US2017/028005
申请日：2017-04-17
申请人： CISCO TECHNOLOGY, INC.
发明人： WARD, David , SURCOUF, Andre , TOWNSLEY, Mark
IPC分类号： H04L29/06 , H04L29/08 , H04L12/725 , H04L29/12
摘要： A method of retrieving content in an Internet Protocol version 6 (IPv6) network is described, including receiving from a network node a lookup request associated with content at a server comprising a mapping database. A response is generated including an IPv6 address, the IPv6 address comprising a content identifier and an indication of a location of the content. The response is transmitted to the network node. A method including receiving at a mapping database a lookup request associated with content and returning a text record comprising an ordered list of addresses for use in segment routing to the content is also described.
摘要翻译：描述了在因特网协议版本6（IPv6）网络中检索内容的方法，包括从网络节点接收与包括映射数据库的服务器处的内容相关联的查找请求。生成包括IPv6地址的响应，IPv6地址包括内容标识符和内容位置的指示。该响应被发送到网络节点。还描述了一种方法，包括在映射数据库处接收与内容相关联的查找请求并返回包括地址的有序列表的文本记录以用于在内容中路由到内容。

2. 发明申请

WO2014182615A1 DATA PLANE LEARNING OF BI-DIRECTIONAL SERVICE CHAINS 审中-公开
标题翻译：数据平面学习双向服务链
公开(公告)号：WO2014182615A1
公开(公告)日：2014-11-13
申请号：PCT/US2014/036789
申请日：2014-05-05
申请人： CISCO TECHNOLOGY, INC.
发明人： GUICHARD, James , QUINN, Paul , WARD, David , KUMAR, Surendra , YADAV, Navindra , SMITH, Michael, R. , BAGEPALLI, Nagaraj, A.
IPC分类号： H04L12/24
CPC分类号： H04L45/306 , H04L41/0893 , H04L47/2441 , H04L69/22
摘要： Techniques are provided to decouple service chain structure from the underlying network forwarding state and allow for data plane learning of service chain forwarding requirements and any association between services function state requirements and the forward and reverse forwarding paths for a service chain. In a network comprising a plurality of network nodes each configured to apply a service function to traffic that passes through the respective network node, a packet is received at a network node. When the network node determines that the service function it applies is stateful, it updates context information in a network service header of the packet to indicate that the service function applied at the network node is stateful and that traffic for a reverse path matching the classification criteria is to be returned to the network node.
摘要翻译：提供了技术来将服务链结构与底层网络转发状态分离，并允许服务链转发要求的数据平面学习和服务功能状态要求与服务链的前向和后向转发路径之间的任何关联。在包括多个网络节点的网络中，每个网络节点被配置为将服务功能应用于通过相应网络节点的业务，在网络节点处接收分组。当网络节点确定其应用的服务功能是有状态时，它更新分组的网络服务报头中的上下文信息，以指示在网络节点处应用的服务功能是有状态的，并且用于与分类标准匹配的反向路径的业务将被返回到网络节点。

3. 发明申请

WO2013188816A1 DISTRIBUTED STATEFUL PATH COMPUTATION ELEMENT OVERLAY ARCHITECTURE 审中-公开
标题翻译：分布式状态路由计算元素覆盖架构
公开(公告)号：WO2013188816A1
公开(公告)日：2013-12-19
申请号：PCT/US2013/045971
申请日：2013-06-14
申请人： CISCO TECHNOLOGY, INC.
发明人： PREVIDI, Stefano , VASSEUR, Jean-Philippe , MEDVED, Jan , WARD, David
IPC分类号： H04L12/773
CPC分类号： H04L45/50 , H04L45/04
摘要： In one embodiment, a particular device in a computer network maintains a locally owned tunnel-state table, and joins a distributed hash table (DHT) ring. In addition, the locally owned tunnel-state table is shared with other devices of the DHT ring to establish a DHT-owned tunnel-state table. The particular device (and other devices) determines ownership of link-state advertisements (LSAs) for a specific portion of a traffic engineering database (TED) according to the DHT ring. As such, when the particular device (or any device) computes a path for a tunnel using a local TED, the particular device may request permission to use resources along the computed path that were advertised in particular LSAs from owners of those particular LSAs when not owned by the particular device.
摘要翻译：在一个实施例中，计算机网络中的特定设备维护本地拥有的隧道状态表，并且连接分布式哈希表（DHT）环。此外，本地拥有的隧道状态表与DHT环的其他设备共享，以建立DHT拥有的隧道状态表。特定设备（和其他设备）根据DHT环确定针对流量工程数据库（TED）的特定部分的链路状态通告（LSA）的所有权。因此，当特定设备（或任何设备）使用本地TED计算隧道的路径时，特定设备可以请求许可沿着计算出的路径使用资源，这些资源在特定LSA的特定LSA中被从这些特定LSA的所有者通告由特定设备拥有。

4. 发明申请

WO2006020435A2 GRACEFUL SHUTDOWN OF LDP ON SPECIFIC INTERFACES BETWEEN LABEL SWITCHED ROUTERS 审中-公开
标题翻译：标签切换路由器之间特定接口的LDP严重关闭
公开(公告)号：WO2006020435A2
公开(公告)日：2006-02-23
申请号：PCT/US2005/027065
申请日：2005-07-29
申请人： CISCO TECHNOLOGY, INC. , SIVABALAN, Muthurajah , BOUTROS, Sami , WARD, David , RAZA, Syed, Kamran , THOMAS, Robert
发明人： SIVABALAN, Muthurajah , BOUTROS, Sami , WARD, David , RAZA, Syed, Kamran , THOMAS, Robert
IPC分类号： H04L12/28
CPC分类号： H04L45/00 , H04L45/50
摘要： LDP label switching may be discontinued gracefully on one or more selected ones of multiple links interconnecting a pair of label switched routers (LSRs) while leaving label switching in operation on the remaining LDP-enabled links. Mechanisms for graceful shutdown of LDP on a selected link are added by way of modification to one or more of e.g., LDP discovery Hello messages, LDP Label Withdraw/Label Release messages, LDP Notification messages.
摘要翻译： LDP标签交换可以在使一对标签交换路由器（LSR）互连的多个链路中的一个或多个选择的一个链路上正常停止，同时在剩余的启用LDP的链路上保持标签交换操作。通过对中的一个或多个修改的方式添加在选定链路上正常关闭LDP的机制

5. 发明申请

WO2005119949A1 REOPTIMIZATION TRIGGERING BY PATH COMPUTATION ELEMENTS 审中-公开
标题翻译：通过路径计算元素进行的重构触发
公开(公告)号：WO2005119949A1
公开(公告)日：2005-12-15
申请号：PCT/US2005/008205
申请日：2005-03-10
申请人： CISCO TECHNOLOGY, INC. , VASSEUR, Jean, Philippe , WARD, David , SIVABALAN, Muthurajah , GOGUEN, Robert
发明人： VASSEUR, Jean, Philippe , WARD, David , SIVABALAN, Muthurajah , GOGUEN, Robert
IPC分类号： H04J1/16
CPC分类号： H04L45/12 , H04L45/04 , H04L45/125 , H04L45/42 , H04L45/44 , H04L45/50 , H04L45/70 , H04L47/125 , H04L47/762 , H04L47/822 , H04L47/825
摘要： A mechanism to alleviate bandwidth fragmentation in a network employing path computation element(s) to place MPLS Traffic Engineering tunnels. One application is a multiple Autonomous System or multiple area network employing distributed computation of MPLS Traffic Engineering LSPs. A particular path computation element may determine that bandwidth fragmentation is present based on monitoring of path computation failures where desired paths are blocked due to bandwidth constraints. In response to the detected bandwidth fragmentation condition, the path computation element floods a routing notification within its Autonomous System or area. Nodes respond to the routing notification by requesting reoptimization of their own previously requested Traffic Engineering LSPs allowing the path computation element an opportunity to alleviate bandwidth fragmentation.
摘要翻译：一种减轻使用路径计算元素的网络中带宽分段的放置MPLS流量工程隧道的机制。一个应用是采用MPLS流量工程LSP的分布式计算的多自治系统或多区域网络。特定路径计算元件可以基于由于带宽限制阻止期望路径的路径计算失败的监视来确定存在带宽分段。响应于检测到的带宽分段条件，路径计算元件在其自治系统或区域内泛洪路由通知。节点通过请求重新优化自己先前请求的流量工程LSP来响应路由通知，允许路径计算元素减轻带宽分段的机会。

6. 发明申请

WO2019045993A1 REPLICATION WITH DEDICATED METAL DEPLOYMENT IN A CLOUD 审中-公开
公开(公告)号：WO2019045993A1
公开(公告)日：2019-03-07
申请号：PCT/US2018/046238
申请日：2018-08-10
申请人： CISCO TECHNOLOGY, INC.
发明人： SHEPHERD, Gregory, J. , WIJNANDS, Ijsbrand , RANNS, Neale , WARD, David , O'GORMAN, Michael, Francis
IPC分类号： H04L29/08 , H04L12/18
摘要： In one embodiment, a method includes receiving from a host node comprising a tenant multicast application with a single tenant deployment, an encapsulated multicast packet over unicast at a virtual replicator, the encapsulated multicast packet comprising receiver information for the virtual replicator, replicating the encapsulated multicast packet at the virtual replicator, and transmitting the encapsulated multicast packet over unicast to a plurality of receiving nodes based on the receiver information. The receiving nodes comprise the tenant multicast application and the virtual replicator operates in a cloud without multicast capability. An apparatus is also disclosed herein.

7. 发明申请

WO2017184530A2 A MAPPING DATABASE SYSTEM FOR USE WITH CONTENT CHUNKS AND METHODS OF ROUTING TO CONTENT IN AN IP NETWORK 审中-公开
公开(公告)号：WO2017184530A2
公开(公告)日：2017-10-26
申请号：PCT/US2017/028005
申请日：2017-04-17
申请人： CISCO TECHNOLOGY, INC.
发明人： WARD, David , SURCOUF, Andre , TOWNSLEY, Mark
IPC分类号： H04L29/06 , H04L29/08 , H04L12/725 , H04L29/12
摘要： A method of retrieving content in an Internet Protocol version 6 (IPv6) network is described, including receiving from a network node a lookup request associated with content at a server comprising a mapping database. A response is generated including an IPv6 address, the IPv6 address comprising a content identifier and an indication of a location of the content. The response is transmitted to the network node. A method including receiving at a mapping database a lookup request associated with content and returning a text record comprising an ordered list of addresses for use in segment routing to the content is also described.

8. 发明申请

WO2014189670A1 CHAINING SERVICE ZONES BY WAY OF ROUTE RE-ORIGINATION 审中-公开
标题翻译：通过路由重新排序来维护服务区
公开(公告)号：WO2014189670A1
公开(公告)日：2014-11-27
申请号：PCT/US2014/036907
申请日：2014-05-06
申请人： CISCO TECHNOLOGY, INC.
发明人： BOSCH, Hendrikus, G.P. , GUICHARD, James , BARACH, Dave , DUMINUCO, Alessandro , FANG, Luyuan , QUINN, Paul , FERNANDO, Rex , WARD, David
IPC分类号： H04L12/715
CPC分类号： H04L67/10 , H04L45/02 , H04L45/04
摘要： Presented herein are techniques for use in a network environment that includes one or more service zones, each service zone including at least one instance of an in-line application service to be applied to network traffic and one or more routers to direct network traffic to the at least one service, and a route target being assigned to a unique service zone to serve as a community value for route import and export between routers of other service zones, destination networks or source networks via a control protocol. An edge router in each service zone or destination network advertises routes by its destination network prefix tagged with its route target. A service chain is created by importing and exporting of destination network prefixes by way of route targets at edge routers of the service zones or source networks.
摘要翻译：这里提出的是在包括一个或多个服务区域的网络环境中使用的技术，每个服务区域包括要应用于网络业务的在线应用服务的至少一个实例以及一个或多个路由器以将网络流量引导到至少一个服务，以及被分配给唯一服务区的路由目标，以用作通过控制协议在其他服务区域，目的地网络或源网络的路由器之间路由导入和导出的社区值。每个服务区域或目标网络中的边缘路由器通过其路由目标标记的目标网络前缀来通告路由。通过在服务区域或源网络的边缘路由器上的路由目标导入和导出目标网络前缀来创建服务链。

9. 发明申请

WO2013188799A1 TRIGGERING CONTROLLED ROUTING UPDATES BY A STATEFUL PATH COMPUTATION ELEMENT 审中-公开
标题翻译：通过状态路径计算元素触发控制路由更新
公开(公告)号：WO2013188799A1
公开(公告)日：2013-12-19
申请号：PCT/US2013/045945
申请日：2013-06-14
申请人： CISCO TECHNOLOGY, INC.
发明人： PREVIDI, Stefano , VASSEUR, Jean-Philippe , WARD, David
IPC分类号： H04L12/24 , H04L12/751
CPC分类号： H04L43/16 , H04L41/12 , H04L45/025 , H04L45/28 , H04L45/42 , H04L45/50
摘要： In one embodiment, a stateful path computation element (PCE) in a computer network determines a need to route at least a threshold number of tunnels, and in response, triggers a routing update from a determined set of routers. Having updated the routing information and available network resources for the set of routers, the stateful PCE may then compute the tunnels based on the update.
摘要翻译：在一个实施例中，计算机网络中的有状态路径计算元件（PCE）确定需要路由至少一个阈值数量的隧道，并且作为响应，从确定的一组路由器触发路由更新。为了更新路由器集合的路由信息和可用的网络资源，状态PCE然后可以基于更新来计算隧道。

10. 发明申请

WO2011033500A1 POWER SAVE MODE FOR LIGHTPATHS 审中-公开
标题翻译：省电模式
公开(公告)号：WO2011033500A1
公开(公告)日：2011-03-24
申请号：PCT/IL2010/000745
申请日：2010-09-12
申请人： CISCO TECHNOLOGY, INC. , GERSTEL, Ornan , BONOMI, Flavio , WARD, David
发明人： GERSTEL, Ornan , BONOMI, Flavio , WARD, David
IPC分类号： H04J14/02 , H04L12/56
CPC分类号： H04B10/0793 , H04B10/07955 , H04J14/0221 , H04J14/0227 , H04J14/0267 , H04J14/0284 , H04L45/22 , H04L45/245 , H04L45/70 , H04L47/10 , H04L47/125 , Y02D50/30
摘要： A method for communicating optically between nodes of an optical network, including forming, between a first node and a second node of the network, a set of lightpaths, each of the set of lightpaths having a respective configuration, transferring communication traffic between the first and second nodes via the set of lightpaths, determining, for the set of lightpaths, that a communication traffic level associated therewith is less than a predetermined threshold, in response to the determining, removing at least one lightpath having a given configuration from the set of lightpaths to form a reduced set of lightpaths and transferring the communication traffic between the first and second nodes via the reduced set of lightpaths, while reducing the level of power consumption in the at least one lightpath and while maintaining the given configuration of the at least one lightpath.
摘要翻译：一种用于在光网络的节点之间进行光学通信的方法，包括在所述网络的第一节点和所述第二节点之间形成一组光路，所述一组光路中的每一个具有相应的配置，在第一和第经由所述一组光路径的第二节点，响应于确定，针对所述一组光路确定与其相关联的通信业务量小于预定阈值，以响应于所述确定，从所述一组光路中去除具有给定配置的至少一个光路以形成减少的光路集合，并且经由减少的光路集合在第一和第二节点之间传送通信业务，同时降低至少一个光路中的功率消耗水平，同时保持至少一个光路径的给定配置。

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