公开(公告)号：US11689453B2

公开(公告)日：2023-06-27

申请号：US17301179

申请日：2021-03-29

申请人： Cisco Technology, Inc.

发明人： Praveen Kumar ,  Navdeep Sood

IPC分类号： H04L45/50 ,  H04L45/00 ,  H04L12/46 ,  H04L101/622

CPC分类号： H04L45/502 ,  H04L12/4641 ,  H04L45/62 ,  H04L45/66 ,  H04L2101/622

摘要： Techniques for virtual private network (VPN) services over optical networks. Client data is received from a source device connected to a first node in an optical communication network. The client data is for transmission over the optical communication network to a destination device connected to a second node in the optical communication network. The client data is transmitted from the source device to the destination device using a layer 2 (L2) virtual network connection between the source device and the destination device. This includes transmitting the client data from the first node to the second node over an optical transport network (OTN) path through the optical communication network using a frame. The second node is configured to receive the frame and transmit the client data to the destination device based on an identifier in the frame.

公开(公告)号：US20190245774A1

公开(公告)日：2019-08-08

申请号：US16342212

申请日：2017-10-02

申请人： Mitsubishi Electric Corporation

发明人： Tetsuyoshi SHIMOKAWA ,  Daisuke OSAGAWA

IPC分类号： H04L12/727 ,  H04W40/12 ,  H04L12/723 ,  H04L12/721 ,  H04L12/753

CPC分类号： H04L45/121 ,  H04L12/28 ,  H04L45/48 ,  H04L45/502 ,  H04L45/70 ,  H04W40/12

摘要： A communication device for forming a communication network, which generates a search frame, which is a frame for searching for a communication path in setting a communication path to/from another communication device, transmits the search frame to other communication devices, and selects a communication path with a shortest delay time to each of the other communication devices on the basis of information in the search frame having passed through other communication devices and returned to the communication device.

公开(公告)号：US09894002B1

公开(公告)日：2018-02-13

申请号：US15166757

申请日：2016-05-27

申请人： Juniper Networks, Inc.

发明人： Mahesh Narayanan ,  Nayan S. Patel ,  Vidur Gupta

IPC分类号： H04L12/723 ,  H04L12/833 ,  H04L12/851 ,  H04L12/857 ,  H04L12/725 ,  H04L12/803 ,  H04L12/701 ,  H04L12/741 ,  H04L12/801

CPC分类号： H04L47/24 ,  H04L45/302 ,  H04L45/50 ,  H04L45/502 ,  H04L47/17

摘要： Techniques are described for applying double experimental (EXP) quality of service (QoS) markings to Multiprotocol Label Switching (MPLS) packets. According to the techniques, an edge router of an MPLS network is configured to map a Differentiated Services Code Point (DSCP) marking for customer traffic to at least two EXP fields of at least two different labels included in a MPLS packet encapsulating the customer traffic. In this way, the edge router may map the full DSCP marking across the first and second EXP fields to provide full resolution QoS for the customer traffic over the MPLS network. The techniques also include a core router of an MPLS network configured to identify a QoS profile for a received MPLS packet based on a combination of a first EXP field of a first label and a second EXP field of a second label included in the MPLS packet.

公开(公告)号：US09634929B2

公开(公告)日：2017-04-25

申请号：US14563979

申请日：2014-12-08

申请人： Cisco Technology, Inc.

发明人： Sami Boutros ,  Yuri Tsier ,  Muthurajah Sivabalan ,  Pradosh Mohapatra ,  Clarence Filsfils ,  John H. W. Bettink ,  Luca Martini

IPC分类号： H04L12/723 ,  H04L12/715 ,  H04L12/18

CPC分类号： H04L45/502 ,  H04L12/18 ,  H04L45/04

摘要： In one embodiment, an access component of a local network edge device receives traffic, and generates a frame for the traffic that includes a remote context label that identifies an access component of the remote network edge device to which the traffic is to be forwarded upon arrival at the remote network edge device, and a virtual circuit label corresponding to a particular virtual service of the traffic. The local network edge device forwards the frame towards the remote network edge device. In another embodiment, the frame may be received at a core component of the remote network edge device, an in response to the remote context label identifying an access component of the remote network edge device, forwarded to the access component, which determines the particular virtual service, and forwards the traffic from the frame out the access component towards an endpoint for the traffic.

公开(公告)号：US20170093701A1

公开(公告)日：2017-03-30

申请号：US14871044

申请日：2015-09-30

申请人： Juniper Networks, Inc.

发明人： Jeyananth Minto Jeganathan ,  Kaliraj Vairavakkalai

IPC分类号： H04L12/723 ,  H04L12/46 ,  H04L12/741

CPC分类号： H04L45/50 ,  H04L12/4641 ,  H04L45/04 ,  H04L45/502 ,  H04L45/54 ,  H04L45/745 ,  H04L49/3009 ,  H04L49/602

摘要： In one example, an autonomous system boundary router (ASBR) forms part of a first autonomous system (AS). The ASBR is between a first provider edge (PE) router of the first AS and a second PE router of a second, different AS. The first PE router and the second PE router form a Multiprotocol Label Switching (MPLS) path. The ASBR includes an interface communicatively coupled to a routing device external to the first AS, a memory configured to store a forwarding table associated with the interface, and one or more processing units configured to receive a packet via the interface, determine that the packet is encapsulated by an MPLS label, select a forwarding table based on the interface by which the packet was received, and forward the packet according to forwarding information of the forwarding table when the forwarding table includes the MPLS label.

公开(公告)号：US09356857B1

公开(公告)日：2016-05-31

申请号：US14319803

申请日：2014-06-30

申请人： Juniper Networks, Inc.

发明人： Mahesh Narayanan ,  Nayan S. Patel ,  Vidur Gupta

IPC分类号： H04L12/723 ,  H04L12/701 ,  H04L12/715 ,  H04L12/741 ,  H04L12/851 ,  H04L12/857 ,  H04L12/725 ,  H04L12/803 ,  H04L12/833

CPC分类号： H04L47/24 ,  H04L45/302 ,  H04L45/50 ,  H04L45/502 ,  H04L47/17

摘要： Techniques are described for applying double experimental (EXP) quality of service (QoS) markings to Multiprotocol Label Switching (MPLS) packets. According to the techniques, an edge router of an MPLS network is configured to map a Differentiated Services Code Point (DSCP) marking for customer traffic to at least two EXP fields of at least two different labels included in a MPLS packet encapsulating the customer traffic. In this way, the edge router may map the full DSCP marking across the first and second EXP fields to provide full resolution QoS for the customer traffic over the MPLS network. The techniques also include a core router of an MPLS network configured to identify a QoS profile for a received MPLS packet based on a combination of a first EXP field of a first label and a second EXP field of a second label included in the MPLS packet.

摘要翻译： 描述了将双重实验（EXP）服务质量（QoS）标记应用于多协议标签交换（MPLS）分组的技术。 根据该技术，MPLS网络的边缘路由器被配置为将用于客户业务的差分服务码点（DSCP）标记映射到包含在封装客户业务的MPLS分组中的至少两个不同标签的至少两个EXP字段。 以这种方式，边缘路由器可以在第一和第二EXP字段之间映射完整的DSCP标记，以为MPLS网络上的客户业务提供全分辨率QoS。 这些技术还包括MPLS网络的核心路由器，其被配置为基于包括在MPLS分组中的第一标签的第一EXP字段和第二标签的第二EXP字段的组合来识别接收的MPLS分组的QoS简档。

公开(公告)号：US09258140B2

公开(公告)日：2016-02-09

申请号：US13978144

申请日：2011-07-07

申请人： Vinod Kumar Madaiah

发明人： Vinod Kumar Madaiah

IPC分类号： H04L12/46 ,  H04L12/723 ,  H04L12/721

CPC分类号： H04L12/4662 ,  H04L12/4658 ,  H04L45/50 ,  H04L45/502 ,  H04L45/68

摘要： Embodiments of the disclosure are related to routing or switching data of a customer network over a provider's network in Provider Backbone Bridge (PBB) to another customer network such that the traffic in the communication channel between the two customer networks is reduced and thus prevents packet loss. The architecture model for routing or switching data of a customer network over a provider's network is a B-component bridge used in backbone networks which performs Σn1 data path protection to prevent packet loss, data aggregation for load sharing, TDM (Time Division Multiplexing) to Ethernet Circuit Emulation.

摘要翻译： 本公开的实施例涉及将客户网络的数据通过供应商骨干桥（PBB）中的提供商网络路由或切换到另一客户网络，使得两个客户网络之间的通信信道中的业务量减少，从而防止分组丢失 。 用于通过提供商网络路由或切换客户网络数据的架构模型是骨干网络中使用的B组件桥梁，其执行和数据路径保护以防止分组丢失，用于负载分担的数据聚合，TDM（时分复用 ）到以太网电路仿真。

公开(公告)号：US09185021B1

公开(公告)日：2015-11-10

申请号：US14054433

申请日：2013-10-15

申请人： WAL-MART STORES, INC.

发明人： Sandesh Ramnathkar

IPC分类号： G06F15/16 ,  H04L12/701 ,  H04L12/723 ,  H04L12/721

CPC分类号： H04L67/32 ,  H04L12/6418 ,  H04L45/00 ,  H04L45/308 ,  H04L45/38 ,  H04L45/44 ,  H04L45/502 ,  H04L61/10 ,  H04L69/22

摘要： The present general inventive concept relates to systems and method for routing electronic messages depending on message content.

摘要翻译： 本发明总体构思涉及根据消息内容来路由电子消息的系统和方法。

公开(公告)号：US09137159B2

公开(公告)日：2015-09-15

申请号：US13850739

申请日：2013-03-26

申请人： Futurewei Technologies, Inc.

发明人： Qianglin Quintin Zhao ,  Ying Chen

IPC分类号： H04L12/801 ,  H04L12/741 ,  H04L12/723 ,  H04L12/761 ,  H04L12/927 ,  H04L12/913

CPC分类号： H04L45/745 ,  H04L45/16 ,  H04L45/502 ,  H04L45/507 ,  H04L47/724 ,  H04L47/806

摘要： An apparatus comprising a processor configured to store a first upstream label in a forwarding table upon receipt of a first message encapsulating the first upstream label from a first adjacent node, store a first downstream label in the forwarding table upon receipt of a second message encapsulating the first downstream label from a second adjacent node, send a third message encapsulating a second downstream label to the first adjacent node, send a fourth message encapsulating a second upstream label to the second adjacent node; and forward data received from a plurality of adjacent nodes over a MP2MP LSP using at least a portion of the labels stored in the forwarding table, wherein each adjacent node is associated with only one upstream label and only one downstream label, and wherein the maximum state complexity of the forwarding table is linear relative to the number of adjacent nodes.

公开(公告)号：US09106583B2

公开(公告)日：2015-08-11

申请号：US14087211

申请日：2013-11-22

申请人： RPX Clearinghouse LLC

发明人： Hamid Ould-Brahim ,  Elizabeth Hache ,  Jeffrey Sugimoto ,  Gregory Wright

IPC分类号： H04L12/28 ,  H04L12/723 ,  H04L12/46 ,  H04L29/12 ,  H04L12/751

CPC分类号： H04L45/50 ,  H04L12/4633 ,  H04L29/12009 ,  H04L29/12028 ,  H04L29/12801 ,  H04L29/12877 ,  H04L45/10 ,  H04L45/502 ,  H04L61/103 ,  H04L61/106 ,  H04L61/6004 ,  H04L61/604

摘要： An architecture for providing service mediation in a network having a Layer-2 domain and an MPLS domain includes at least one Layer-2 provider edge device in communication with a first customer site; at least one Layer-2 edge device in communication with the Layer-2 provider edge device; at least one MPLS mediation edge device in communication with the Layer-2 edge device; and at least one MPLS provider edge device in communication with both the MPLS mediation edge device and a second customer site. An end-to-end connection is established using native Layer-2 signaling, if any, in the Layer-2 domain and PWE3 signaling protocols in the MPLS domain. The MPLS mediation edge device resolves associations between Layer-2 edge devices and MPLS provider edge devices. The service is “mediated” in the sense that native Layer-2 signaling is terminated at the MME, and a new domain, i.e., pseudowire, is established across the MPLS domain.

摘要翻译： 用于在具有二层域和MPLS域的网络中提供服务中介的架构包括与第一客户站点通信的至少一个第二层供应商边缘设备; 至少一个与所述第二层提供商边缘设备通信的第二层边缘设备; 至少一个与第二层边缘设备通信的MPLS中介边缘设备; 以及至少一个与MPLS中介边缘设备和第二客户站点通信的MPLS提供商边缘设备。 使用MPLS域中的二层域中的本地二层信令（如果有的话）和PWE3信令协议建立端到端连接。 MPLS中介边缘设备解决了二层边缘设备和MPLS提供商边缘设备之间的关联。 在本地层2信令在MME处终止的意义上，服务是“介导的”，并且跨MPLS域建立新的域（即，伪线）。