公开(公告)号：US20160142248A1

公开(公告)日：2016-05-19

申请号：US14661458

申请日：2015-03-18

Applicant: Cisco Technology, Inc.

Inventor： Pascal Thubert ,  Ijsbrand Wijnands ,  Gregory Shepherd

IPC: H04L12/24 ,  H04L29/08 ,  G06F17/30 ,  H04L12/741 ,  H04L12/751

CPC classification number: H04L67/1095 ,  G06F17/30324 ,  G06F17/30958 ,  H04L45/02 ,  H04L45/18 ,  H04L45/34 ,  H04L45/48 ,  H04L45/74 ,  H04L45/745 ,  H04L61/2038 ,  H04L61/6004 ,  H04W40/02 ,  H04W40/24 ,  H04W40/30 ,  H04W84/18 ,  Y02D70/00 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/22 ,  Y02D70/30

Abstract: In one embodiment, a first node in a network receives one or more bitmaps from one or more child nodes of the first node according to a directed acyclic graph (DAG). Each of the one or more child nodes is associated with a corresponding unique bit position in the one or more bitmaps. The first node stores, in a forwarding table, the one or more bitmaps received from the one or more child nodes of the first node. The first node receives a message that includes a destination bitmap that identifies one or more destinations of the message via one or more set bits at bit positions associated with the one or more child nodes. The first node forwards the message towards the identified one or more destinations based on the destination bitmap and the one or more bitmaps stored in the forwarding table of the first node.

Abstract translation: 在一个实施例中，网络中的第一节点根据有向非循环图（DAG）从第一节点的一个或多个子节点接收一个或多个位图。 一个或多个子节点中的每一个与一个或多个位图中的对应唯一位位置相关联。 第一节点在转发表中存储从第一节点的一个或多个子节点接收的一个或多个位图。 第一节点接收消息，该消息包括目的地位图，其通过与一个或多个子节点相关联的位位置处的一个或多个设置位来标识消息的一个或多个目的地。 第一节点基于目的位图和存储在第一节点的转发表中的一个或多个位图将消息转发到所标识的一个或多个目的地。

公开(公告)号：US09325605B2

公开(公告)日：2016-04-26

申请号：US13835644

申请日：2013-03-15

Applicant: Cisco Technology, Inc.

Inventor： Stig Ingvar Venaas ,  Ijsbrand Wijnands

IPC: H04L12/761 ,  H04L12/18

CPC classification number: H04L45/16 ,  H04L12/18

Abstract: In one embodiment, a node in a communication network receives a request for messages of a particular group, determines a rendezvous point, and transmits the request to the rendezvous point to cause the rendezvous point to return a source-message indicating a source-node of the particular group. The node further creates a path from itself to the source-node and receives messages of the particular group according to the path.

Abstract translation: 在一个实施例中，通信网络中的节点接收对特定组的消息的请求，确定会合点，并将该请求发送到会合点，以使会合点返回指示源节点的源消息 特定组。 该节点进一步创建自己到源节点的路径，并根据路径接收特定组的消息。

公开(公告)号：US20150181309A1

公开(公告)日：2015-06-25

申请号：US14634765

申请日：2015-02-28

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Gregory J. Shepherd ,  Ijsbrand Wijnands ,  Thomas Kernen

IPC: H04N21/647 ,  H04N21/643 ,  H04N21/61 ,  H04N21/6437

CPC classification number: H04N21/64784 ,  H04L12/18 ,  H04L12/1886 ,  H04L45/16 ,  H04L2212/00 ,  H04N21/6125 ,  H04N21/64322 ,  H04N21/6437

Abstract: Various systems and methods for performing bit indexed explicit replication (BIER). For example, one method involves receiving a first bit string at a node, encapsulating a packet with the first bit string, and forwarding the packet. The method also involves receiving a second bit string at the node and selecting the second bit string. The method also involves encapsulating a second packet with the second bit string and forwarding the second packet.

Abstract translation: 用于执行位索引显式复制（BIER）的各种系统和方法。 例如，一种方法涉及在节点处接收第一位串，用第一位串封装数据包，并转发数据包。 该方法还涉及在节点处接收第二位串并选择第二位串。 该方法还包括用第二位串封装第二分组并转发第二分组。

公开(公告)号：US20150131658A1

公开(公告)日：2015-05-14

申请号：US14603501

申请日：2015-01-23

Applicant: Cisco Technology, Inc.

Inventor： Ijsbrand Wijnands ,  Gregory J. Shepherd ,  Christian J. Martin ,  Rajiv Asati

IPC: H04L12/743 ,  H04L12/707 ,  H04L12/18 ,  H04L12/721

CPC classification number: H04L45/7453 ,  H04L12/185 ,  H04L45/16 ,  H04L45/24 ,  H04L45/38 ,  H04L45/54

Abstract: Various systems and methods for performing bit indexed explicit replication (BIER). For example, one method involves receiving a packet at a node. The packet includes a bit string. The node selects forwarding information based on a flow value associated with the packet. The forwarding information includes a forwarding bit mask. The node then forwards the packet based on the bit string and the forwarding information.

Abstract translation: 用于执行位索引显式复制（BIER）的各种系统和方法。 例如，一种方法涉及在节点处接收分组。 该分组包括一个位串。 节点根据与分组相关联的流量值选择转发信息。 转发信息包括转发位掩码。 然后该节点基于比特串和转发信息转发该分组。

公开(公告)号：US20150092776A1

公开(公告)日：2015-04-02

申请号：US14040989

申请日：2013-09-30

Applicant: Cisco Technology, Inc.

Inventor： Ijsbrand Wijnands ,  Nagendra Kumar

IPC: H04L12/723

CPC classification number: H04L45/507 ,  H04L45/36

Abstract: A receiving node receives a virtual LDP initialization (vInit) message from a first node, where the vInit message comprises a request to establish a vLDP session between a requesting node and a target node. If the receiving node does not own a destination address of the vInit message, the receiving node is determined to be a relay node. The relay node inserts a relay label into the vInit message, where the relay label is an outgoing label that the relay node uses to reach the first node, and forwards the vInit message toward the destination address. If the receiving node owns the destination address, the receiving node is determined to be the target node, which extracts a stack of relay labels from the vInit message. The relay labels are used to define a return path to the requesting node for messages transmitted over the vLDP session.

Abstract translation: 接收节点从第一节点接收虚拟LDP初始化（vInit）消息，其中vInit消息包括在请求节点和目标节点之间建立vLDP会话的请求。 如果接收节点不具有vInit消息的目的地地址，则接收节点被确定为中继节点。 中继节点将中继标签插入到vInit消息中，其中中继标签是中继节点用于到达第一个节点的输出标签，并将vInit消息转发到目的地址。 如果接收节点拥有目的地址，则接收节点被确定为目标节点，其从vInit消息中提取中继标签的堆栈。 中继标签用于定义通过vLDP会话发送的消息到请求节点的返回路径。

公开(公告)号：US20150078379A1

公开(公告)日：2015-03-19

申请号：US14488810

申请日：2014-09-17

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Ijsbrand Wijnands ,  Gregory J. Shepherd ,  Nagendra Kumar Nainar ,  Christian Martin

IPC: H04L12/18 ,  H04L12/741 ,  H04L12/761

CPC classification number: H04L12/18 ,  H04L12/1886 ,  H04L45/16 ,  H04L45/18 ,  H04L45/50 ,  H04L45/74

Abstract: Various systems and methods for performing bit indexed explicit replication (BIER) using IPv6. For example, one method involves receiving, at a node, a packet that includes an IP header. The packet also includes a multicast forwarding entry. The method also involves comparing the multicast forwarding entry with forwarding information stored by the node and selecting a neighbor based on the comparing. The method further includes forwarding the packet to the neighbor.

Abstract translation: 使用IPv6执行位索引显式复制（BIER）的各种系统和方法。 例如，一种方法涉及在节点处接收包括IP报头的分组。 该报文还包括组播转发表项。 该方法还包括将组播转发表项与节点存储的转发信息进行比较，并根据比较选择邻居。 该方法还包括将分组转发到邻居。

公开(公告)号：US20150036685A1

公开(公告)日：2015-02-05

申请号：US13954657

申请日：2013-07-30

Applicant: Cisco Technology, Inc.

Inventor： Ijsbrand Wijnands ,  Stefan Olofsson

IPC: H04L12/723

CPC classification number: H04L45/507 ,  H04L45/16 ,  H04L45/18 ,  H04L45/22

Abstract: In one embodiment, a node in a multicast label distribution protocol (mLDP) network determines a remote protecting node for a particular root node in the mLDP network. In addition, the node determines a protecting node address of the remote protecting node and a root node address of the particular root node, and establishes an mLDP label-switched path (LSP) via the remote protecting node by using the protecting node address as a root of an outer forwarding equivalent class (FEC) of a recursive FEC, and using the root node address as an inner FEC of the recursive FEC for the mLDP LSP. As such, when the remote protecting node is reached, the outer FEC is stripped and the remote protecting node continues establishing the mLDP LSP toward the particular root node.

Abstract translation: 在一个实施例中，多播标签分发协议（mLDP）网络中的节点为mLDP网络中的特定根节点确定远程保护节点。 另外，节点确定远程保护节点的保护节点地址和特定根节点的根节点地址，并且通过使用保护节点地址作为远端保护节点地址来建立通过远程保护节点的mLDP标签交换路径（LSP） 根据递归FEC的外部转发等效类（FEC）的根，并且使用根节点地址作为用于mLDP LSP的递归FEC的内部FEC。 因此，当到达远程保护节点时，外部FEC被剥离，并且远程保护节点继续向特定根节点建立mLDP LSP。

公开(公告)号：US20130077629A1

公开(公告)日：2013-03-28

申请号：US13681809

申请日：2012-11-20

Applicant: Cisco Technology, Inc.

Inventor： Ijsbrand Wijnands ,  Arjen Boers

IPC: H04L12/18

CPC classification number: H04L12/18 ,  H04L45/00 ,  H04L45/04 ,  H04L45/16 ,  H04L45/50 ,  H04L45/60

Abstract: An apparatus and method for emulating a shared or source distribution tree within an MPLS network. In one embodiment of the method, a router receives a multicast data packet. The router transmits the multicast data packet to a first router via a first point-to-point label switched path (LSP). The router replicates the multicast data packet to produce a replicated multicast data packet. Then the router transmits the replicated multicast data packet to a second router via a second point-to-point LSP. The first point-to-point LSP is distinct from the second point-to-point LSP.

Abstract translation: 一种在MPLS网络内仿真共享或源分发树的装置和方法。 在该方法的一个实施例中，路由器接收多播数据分组。 路由器通过第一个点对点标签交换路径（LSP）将组播数据包发送到第一个路由器。 路由器复制组播数据包以产生复制的组播数据包。 然后，路由器经由第二点对点LSP将复制的多播数据分组发送到第二路由器。 第一个点到点的LSP与第二个点到点的LSP不同。

公开(公告)号：US12052569B2

公开(公告)日：2024-07-30

申请号：US17403676

申请日：2021-08-16

Applicant: Cisco Technology Inc.

Inventor： Stefan Olofsson ,  Ijsbrand Wijnands ,  Hendrikus G. P. Bosch ,  Jeffrey Napper ,  Anubhav Gupta

IPC: H04W12/086 ,  H04L9/40 ,  H04L45/64 ,  H04W12/37

CPC classification number: H04W12/086 ,  H04L63/0272 ,  H04L63/20 ,  H04W12/37 ,  H04L45/64

Abstract: In one embodiment, a router includes one or more processors and one or more computer-readable non-transitory storage media coupled to the one or more processors. The one or more computer-readable non-transitory storage media include instructions that, when executed by the one or more processors, cause the router to perform operations including receiving software-defined networking in a wide area network (SD-WAN) policies from a component of an SD-WAN network. The operations also include establishing a session with a mobile device and receiving information associated with the mobile device in response to establishing the session with the mobile device. The operations further include filtering the SD-WAN policies based on the information associated with the mobile device to generate SD-WAN device-specific policies and communicating the SD-WAN device-specific policies to the mobile device.

公开(公告)号：US11997005B2

公开(公告)日：2024-05-28

申请号：US18166775

申请日：2023-02-09

Applicant: Cisco Technology, Inc.

Inventor： Mankamana Prasad Mishra ,  Ijsbrand Wijnands ,  Anuj Budhiraja ,  Ali Sajassi ,  Stephane Litkowski ,  Satya Ranjan Mohanty

IPC: H04L45/00 ,  H04L12/18 ,  H04L12/46 ,  H04L45/02 ,  H04L45/16 ,  H04L45/586

CPC classification number: H04L45/16 ,  H04L12/185 ,  H04L12/1886 ,  H04L12/4641 ,  H04L45/02 ,  H04L45/586

Abstract: A method comprises, at a first router configured to perform Bit Index Explicit Replication (BIER) for forwarding of multicast packets in a network, storing configuration information that indicates that the first router belongs to multiple subdomains of a BIER domain, and is able to forward the multicast packets for a virtual private network on the multiple subdomains. The method further comprises, during an auto-discovery procedure, generating an auto-discovery message to include an auto-discovery route and route attributes that indicate the multiple subdomains, and sending the auto-discovery message to a second router of the virtual private network the network.