Higher Layer Compression with Lower Layer Signaling
    41.
    发明申请
    Higher Layer Compression with Lower Layer Signaling 有权
    具有较低层信令的较高层压缩

    公开(公告)号:US20140029424A1

    公开(公告)日:2014-01-30

    申请号:US13557932

    申请日:2012-07-25

    IPC分类号: H04W28/10 H04L12/24

    摘要: Methods and devices for reducing traffic over a wireless link through the compression or suppression of high layer packets carrying predictable background data prior to transportation over a wireless link. The methods include intercepting application layer protocol packets carrying the predictable background data. In embodiments where the background data is periodic in nature, the high layer packets may be compressed into low-layer signaling indicators for communication over a low-layer control channel (e.g., an on off keying (OOK) channel). Alternatively, the high layer packets may be suppressed entirely (not transported over the wireless link) when a receiver side daemon is configured to autonomously replicate the periodic background nature according to a projected interval. In other embodiments, compression techniques may be used to reduce overhead attributable to non-periodic background data that is predictable in context.

    摘要翻译: 用于通过在通过无线链路传输之前通过压缩或抑制携带可预测背景数据的高层分组来减少无线链路上的业务的方法和设备。 这些方法包括拦截携带可预测背景数据的应用层协议报文。 在背景数据本质上是周期性的实施例中,高层分组可以被压缩成低层信令指示符,用于通过低层控制信道(例如,断开键控(OOK)信道)进行通信。 或者,当接收器侧守护进程被配置为根据投影的间隔自动复制周期性背景特性时,可以完全抑制高层分组(不通过无线链路传输)。 在其他实施例中,可以使用压缩技术来减少归因于上下文中可预测的非周期性背景数据的开销。

    Link State Fast Flood with Computed Multi-Protocol-Label-Switching (MPLS) Broadcast Tree
    42.
    发明申请
    Link State Fast Flood with Computed Multi-Protocol-Label-Switching (MPLS) Broadcast Tree 有权
    链路状态快速泛洪与计算多协议标签交换(MPLS)广播树

    公开(公告)号:US20130208624A1

    公开(公告)日:2013-08-15

    申请号:US13370044

    申请日:2012-02-09

    IPC分类号: H04L12/28

    CPC分类号: H04L45/50 H04L45/12

    摘要: A link state network comprising a plurality of interconnected nodes, and a multiprotocol label switching (MPLS) tree established amongst at least some of the interconnected nodes, wherein the MPLS tree is associated with an MPLS label, and wherein the interconnected nodes are configured to deterministically forward a plurality of link state update (LSU) packets comprising the MPLS label over the MPLS tree.

    摘要翻译: 包括多个互连节点的链路状态网络和在至少一些互连节点之间建立的多协议标签交换(MPLS)树,其中所述MPLS树与MPLS标签相关联,并且其中所述互连节点被配置为确定性地 通过MPLS树转发包含MPLS标签的多个链路状态更新(LSU)报文。

    Transparent bypass and associated mechanisms
    43.
    发明授权
    Transparent bypass and associated mechanisms 有权
    透明旁路和相关机制

    公开(公告)号:US08050270B2

    公开(公告)日:2011-11-01

    申请号:US12431650

    申请日:2009-04-28

    IPC分类号: H04L12/28

    摘要: A network component comprising at least one processor configured to implement a method comprising transparently snooping a path control message comprising a first path identifier, wherein the path control message is sent between a plurality of routers and is not intended for the network component, analyzing a plurality of frames each comprising a second path identifier, and diverting at least some of the frames away from at least one of the routers, wherein the second path identifier in the diverted frames matches the first path identifier. Included is a method comprising configuring a bypass path by snooping a control frame comprising a label switched path (LSP) identifier, and routing a plurality of data frames associated with the LSP identifier to the bypass path without routing any subsequent control frames associated with the LSP identifier to the bypass path.

    摘要翻译: 一种网络组件,包括至少一个处理器,其被配置为实现包括透明地窥探包括第一路径标识符的路径控制消息的方法,其中所述路径控制消息在多个路由器之间发送,并且不用于所述网络组件, 的帧,每个帧包括第二路径标识符,并且转移距离至少一个路由器的至少一些帧,其中转向帧中的第二路径标识符与第一路径标识符匹配。 包括一种方法,包括通过窥探包括标签交换路径(LSP)标识符的控制帧以及将与LSP标识符相关联的多个数据帧路由到旁路路径而不路由与LSP相关联的任何后续控制帧来配置旁路路径 标识符到旁路路径。

    Service Movement in Link State Controlled Layer Two Networks
    44.
    发明申请
    Service Movement in Link State Controlled Layer Two Networks 审中-公开
    链路状态控制二层网络中的服务运动

    公开(公告)号:US20110170403A1

    公开(公告)日:2011-07-14

    申请号:US12985731

    申请日:2011-01-06

    IPC分类号: H04L12/26 H04L12/56

    CPC分类号: H04L45/66

    摘要: An apparatus comprising a first edge node configured to populate a learned table using a first frame received from a remote node via a second edge node, wherein the learned table comprises a remote node address and a first forwarding address associated with the remote node address, and wherein the first forwarding address is for the second edge node, receive a second frame destined for the remote node, and determine that the second frame should be sent to the second edge node using the learned table, wherein the first edge node is further configured to replace the first forwarding address in the learned table with a second forwarding address when the second edge node fails, and wherein the second forwarding address is for a third edge node.

    摘要翻译: 一种装置,包括:第一边缘节点,被配置为使用经由第二边缘节点从远程节点接收的第一帧来填充学习表,其中所述学习表包括远程节点地址和与所述远程节点地址相关联的第一转发地址,以及 其中所述第一转发地址用于所述第二边缘节点,接收去往所述远程节点的第二帧,并且使用所述学习表确定应该将所述第二帧发送到所述第二边缘节点,其中所述第一边缘节点还被配置为 当第二边缘节点发生故障时,用第二转发地址替换学习表中的第一转发地址,并且其中第二转发地址用于第三边缘节点。

    Method and apparatus for loop prevention in communication networks
    45.
    发明授权
    Method and apparatus for loop prevention in communication networks 有权
    通信网络环路预防的方法和装置

    公开(公告)号:US07920487B2

    公开(公告)日:2011-04-05

    申请号:US12175881

    申请日:2008-07-18

    IPC分类号: H04L12/28

    摘要: A method and apparatus route data packets in communication network. A current routing topology of the network is analyzed and a digest value representing the current routing topology is determined. The digest value is encapsulated within the data packet. The data packet is forwarded according to the current routing topology.

    摘要翻译: 一种方法和装置在通信网络中路由数据包。 分析网络的当前路由拓扑,并确定表示当前路由拓扑的摘要值。 摘要值封装在数据包中。 数据包根据当前路由拓扑转发。

    Transparent Bypass and Associated Mechanisms
    46.
    发明申请
    Transparent Bypass and Associated Mechanisms 有权
    透明旁路及相关机制

    公开(公告)号:US20090268739A1

    公开(公告)日:2009-10-29

    申请号:US12431650

    申请日:2009-04-28

    IPC分类号: H04L12/56

    摘要: A network component comprising at least one processor configured to implement a method comprising transparently snooping a path control message comprising a first path identifier, wherein the path control message is sent between a plurality of routers and is not intended for the network component, analyzing a plurality of frames each comprising a second path identifier, and diverting at least some of the frames away from at least one of the routers, wherein the second path identifier in the diverted frames matches the first path identifier. Included is a method comprising configuring a bypass path by snooping a control frame comprising a label switched path (LSP) identifier, and routing a plurality of data frames associated with the LSP identifier to the bypass path without routing any subsequent control frames associated with the LSP identifier to the bypass path.

    摘要翻译: 一种网络组件,包括至少一个处理器,其被配置为实现包括透明地窥探包括第一路径标识符的路径控制消息的方法,其中所述路径控制消息在多个路由器之间发送,并且不用于所述网络组件, 的帧,每个帧包括第二路径标识符,并且转移距离至少一个路由器的至少一些帧,其中转向帧中的第二路径标识符与第一路径标识符匹配。 包括一种方法,包括通过窥探包括标签交换路径(LSP)标识符的控制帧以及将与LSP标识符相关联的多个数据帧路由到旁路路径而不路由与LSP相关联的任何后续控制帧来配置旁路路径 标识符到旁路路径。

    Method and apparatus for computing alternate multicast/broadcast paths in a routed network
    47.
    发明申请
    Method and apparatus for computing alternate multicast/broadcast paths in a routed network 失效
    用于在路由网络中计算备用多播/广播路径的方法和装置

    公开(公告)号:US20080107018A1

    公开(公告)日:2008-05-08

    申请号:US11713499

    申请日:2007-03-02

    IPC分类号: G01R31/08

    摘要: Alternate multicast/broadcast paths may be calculated in a routed network to enable broadcast/multicast traffic to be transmitted around a local failure in the routed network until the routing system reconverges on a new network topography. According to an embodiment of the invention, the nodes on a multicast tree or a broadcast tree may compute alternate paths for each of the downstream nodes in the multicast/broadcast tree or for select nodes in the multicast/broadcast tree. The select nodes may be those nodes that have advertised membership in the multicast or a set number of hops downstream on the branch affected by the failure. The alternate paths may be unicast paths from the node to the other nodes on the multicast/broadcast tree. U-turn nodes may be used where there is no regular loop-free alternate network path to a node on the downstream multicast/broadcast tree.

    摘要翻译: 可以在路由网络中计算备用组播/广播路径,以使广播/多播业务能够围绕路由网络中的本地故障进行传输,直到路由系统重新构建新的网络地形。 根据本发明的实施例,多播树或广播树上的节点可以计算多播/广播树中的每个下游节点或多播/广播树中的选择节点的替代路径。 选择节点可以是已经通告多播中的成员身份的那些节点,或者受到故障影响的分支下游的一组跳数。 备用路径可以是从节点到组播/广播树上的其他节点的单播路径。 可以在下游组播/广播树上的节点没有常规无环路由替代网络路径的情况下使用U形转弯节点。

    Allocating network resources
    48.
    发明授权
    Allocating network resources 有权
    分配网络资源

    公开(公告)号:US07283477B1

    公开(公告)日:2007-10-16

    申请号:US09645186

    申请日:2000-08-24

    IPC分类号: H04J1/16

    摘要: A network resource is allocated to a data path by determining if a sufficient amount of the network resource is available in a network path to accommodate the data path, and obtaining a cost associated with using the network resource available in the network path for the data path. It is decided whether to allocate the network resource in the network path to the data path based on the amount of the network resource and the cost associated with using the network resource. One representative example of the data path is a label switched path (LSP) on a multiprotocol label switching (MPLS) network.

    摘要翻译: 通过确定足够数量的网络资源在网络路径中是否可用以适应数据路径,将网络资源分配给数据路径,以及获得与使用网络路径中可用于数据路径的网络资源相关联的成本 。 决定是否根据网络资源的数量和使用网络资源的成本,将网络路径中的网络资源分配到数据路径。 数据路径的一个代表性例子是多协议标签交换(MPLS)网络上的标签交换路径(LSP)。

    Method and apparatus for implementing link-based source routing in generic framing protocol
    49.
    发明申请
    Method and apparatus for implementing link-based source routing in generic framing protocol 有权
    在通用成帧协议中实现基于链路的源路由的方法和装置

    公开(公告)号:US20060002304A1

    公开(公告)日:2006-01-05

    申请号:US10881308

    申请日:2004-06-30

    IPC分类号: H04L12/26

    摘要: Link-based source routing may be implemented using generic framing protocol (GFP) to enable GFP frames to contain a switching context that will allow them to be forwarded on a network without requiring state information to be distributed to interior network elements on the network. Source routes may be computed from network topography information obtained using OSPF or ISIS. An extension header type is added to the GFP frames to signal to the network elements that the GFP frame contains a link-based source route. The source route contains a vector of tunnel IDs and a pointer to the current hop, to enable the current tunnel ID to be determined. The tunnel IDs have local significance only, and hence state information is not required to be distributed on the network. A return route may be built by index substitution as the frame traverses the network.

    摘要翻译: 可以使用通用成帧协议(GFP)来实现基于链路的源路由,以使得GFP帧能够包含将允许它们在网络上转发而不需要将状态信息分发到网络上的内部网络元件的切换上下文。 源路由可以使用OSPF或ISIS获得的网络拓扑信息进行计算。 扩展头类型被添加到GFP帧以向网络元件发信号,GFP帧包含基于链路的源路由。 源路由包含隧道ID的向量和指向当前跳的指针,以使得能够确定当前的隧道ID。 隧道ID仅具有本地意义,因此不需要在网络上分配状态信息。 当帧穿过网络时,可以通过索引替换构建返回路由。

    Apparatus and method of maintaining timely topology data within a link state routing network
    50.
    发明授权
    Apparatus and method of maintaining timely topology data within a link state routing network 有权
    在链路状态路由网络中维护及时的拓扑数据的装置和方法

    公开(公告)号:US06560654B1

    公开(公告)日:2003-05-06

    申请号:US09417155

    申请日:1999-10-12

    IPC分类号: G06F1300

    摘要: An apparatus and method of forwarding a first message from a source to a destination via a link state routing network utilizes point-to-point feedback messages when the quality of a first path from the source to the destination meets some prescribed condition. To that end, the first path is initialized within the link state routing network. A feedback message having data relating to a quality of the first path then is received as a point-to-point message that is forwarded to the source. In response to receipt of the feedback message, a second path is initialized from the source to the destination. The first message then is forwarded to the destination via the second path.

    摘要翻译: 当从源到目的地的第一路径的质量满足某些规定条件时,经由链路状态路由选择网络将第一消息从源转发到目的地的装置和方法利用点对点反馈消息。 为此,在链路状态路由网络中初始化第一条路径。 接收具有与第一路径的质量相关的数据的反馈消息作为转发到源的点对点消息。 响应于接收到反馈消息,从源到目的地初始化第二路径。 然后,第一个消息通过第二个路径转发到目的地。