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    • 3. 发明申请
    • NETWORK ROUTING APPARATUS THAT PERFORMS SOFT GRACEFUL RESTART
    • 网络路由设备实现轻松重新启动
    • WO2007117886A3
    • 2008-07-24
    • PCT/US2007064368
    • 2007-03-20
    • CISCO TECH INCNALAWADE GARGIPATEL KEYURKAPOOR RUCHI
    • NALAWADE GARGIPATEL KEYURKAPOOR RUCHI
    • H04L12/28H04L12/56
    • H04L45/28H04L45/02H04L45/52H04L45/563
    • A network data packet routing apparatus with BGP is configured to soft reset an AFI or SAFI, so that forwarding on routes associated with the AFI or SAFI can continue even after an event or error. One approach involves establishing a Border Gateway Protocol (BGP) peering session between a first node and a second node in a packet-switched network; detecting a BGP condition requiring a reset of a BGP address family indicator (AFI) data structure or a sub-address family indicator (SAFI) data structure, wherein the BGP condition does not affect states of routes in the AFI or SAFI; preserving a BGP state and a forwarding state of the AFI or SAFI; and forwarding data on routes represented in the AFI or SAFI. Soft notification messaging and marking routes as stale facilitates the approach.
    • 具有BGP的网络数据分组路由设备被配置为软复位AFI或SAFI,使得即使在事件或错误之后,与AFI或SAFI相关联的路由上的转发也可以继续。 一种方法涉及在分组交换网络中的第一节点和第二节点之间建立边界网关协议(BGP)对等体会话; 检测需要复位BGP地址族指示符(AFI)数据结构或子地址族指示符(SAFI)数据结构的BGP条件,其中BGP条件不影响AFI或SAFI中的路由状态; 保持BGP状态和AFI或SAFI的转发状态; 并转发AFI或SAFI所代表的路由数据。 软通知消息和标记路由为陈旧方便。
    • 7. 发明申请
    • METHOD OF DETERMINING TRANSIT COSTS ACROSS AUTONOMOUS SYSTEMS
    • 自动系统确定交通费用的方法
    • WO2006121707A1
    • 2006-11-16
    • PCT/US2006/016800
    • 2006-05-02
    • CISCO TECHNOLOGY, INC.MARTINI, LucaPATEL, Keyur
    • MARTINI, LucaPATEL, Keyur
    • G01R31/08H04L12/28
    • H04L45/123H04L45/04H04L45/12
    • A method for determining a cumulative network layer reachability cost of traversing one or more autonomous network routing systems comprises receiving first network route information from an originating customer edge router, wherein in the first network route information identifies a route in a customer network (302); determining a transit cost from the provider edge router to an endpoint associated with the originating customer edge router based upon a metric value received in cost community attribute (304); repeating the determining step for each of one or more autonomous systems that lie in a path from the originating customer edge router to a destination customer edge router, to a result in determining an accumulated transit costs across one or more autonomous system (306); and determining, based at least in part upon the accumulated transmit cost, a best path from the provider edge router to the endpoint associated with the originating customer edge router (308).
    • 一种用于确定遍历一个或多个自主网络路由系统的累积网络层可达性成本的方法包括从始发客户边缘路由器接收第一网络路由信息,其中在所述第一网络路由信息中识别客户网络(302)中的路由; 基于在成本共同体属性(304)中接收的度量值,确定从所述提供商边缘路由器到与所述始发客户边缘路由器相关联的端点的传输成本; 对位于从起始客户边缘路由器到目的地客户边缘路由器的路径中的一个或多个自治系统中的每一个重复确定步骤,从而确定跨越一个或多个自治系统(306)的累积过境成本。 以及至少部分地基于所述累积的传输成本确定从所述提供者边缘路由器到与所述始发客户边缘路由器(308)相关联的端点的最佳路径。