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    • 3. 发明申请
    • METHOD AND APPARATUS FOR HANDLING NETWORK RESOURCE FAILURES IN A ROUTER
    • 在路由器中处理网络资源故障的方法和装置
    • WO2012013251A1
    • 2012-02-02
    • PCT/EP2010/065040
    • 2010-10-07
    • TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)CSÁSZÁR, AndrásENYEDI, Gábor SandorKINI, Sriganesh
    • CSÁSZÁR, AndrásENYEDI, Gábor SandorKINI, Sriganesh
    • H04L12/24H04L12/56
    • H04L43/04H04L43/0817H04L45/025H04L45/028H04L45/22H04L45/28
    • There is provided a method for use by a router in a communications network. Forwarding information is maintained (S1) which specifies the next hop node for each of a plurality of possible destination nodes. Update information is maintained (S1) which specifies how, if at all, the next hop nodes specified in the forwarding information are to be updated for a plurality of possible network resource failures. Known failure information is maintained (S1) which relates to a known network resource failure or which specifies that there is no known network resource failure. A failure notification is received (S2) relating to a network resource failure. In response to receipt of the failure notification, it is determined (S3) from the failure notification how, if at all, the known failure information is to be updated, and the known failure information is updated, if required, based on the determination (S4). A communications packet is received (S5). Various steps (S6 to S10) are carried out in response to receipt of the communications packet. The destination node for the received packet is determined (S6). It is determined (S7) whether the next hop node specified by the forwarding information for the determined destination node is potentially invalid in view of the known failure information. If so, then the next hop node for the determined destination node is updated if necessary in the forwarding information using the update information and the known failure information (S8). The next hop node is determined for the received packet using the forwarding information and the determined destination node (S9). The received packet is forwarded towards the determined next hop node (S10).
    • 提供了一种在通信网络中由路由器使用的方法。 保持转发信息(S1),其指定多个可能目的地节点中的每一个的下一跳节点。 维护更新信息(S1),其指定如何在多个可能的网络资源故障中如何更新在转发信息中指定的下一跳节点。 保持已知的故障信息(S1),其涉及已知的网络资源故障或指定没有已知的网络资源故障。 接收到与网络资源故障有关的故障通知(S2)。 响应于故障通知的接收,根据故障通知确定(S3)如果根本确定(如果有的话)知道的故障信息将被更新,并且如果需要,更新已知的故障信息, S4)。 接收通信分组(S5)。 响应于通信分组的接收,执行各种步骤(S6至S10)。 确定接收到的分组的目的地节点(S6)。 鉴于已知的故障信息,确定(S7)由所确定的目的地节点的转发信息指定的下一跳节点是否潜在地无效。 如果是,则如果需要,则使用更新信息和已知故障信息,在转发信息中更新所确定的目的地节点的下一跳节点(S8)。 使用转发信息和所确定的目的地节点为接收的分组确定下一跳节点(S9)。 接收到的分组被转发到确定的下一跳节点(S10)。
    • 7. 发明申请
    • CONGESTION HANDLING IN A PACKET SWITCHED NETWORK DOMAIN
    • 分组交换网络域中的紧急处理
    • WO2006052174A1
    • 2006-05-18
    • PCT/SE2004/001657
    • 2004-11-12
    • TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)CSÁSZÁR, AndrásTAKÁCS, AttilaBÁDER, AttilaSZABO, RobertWESTBERG, Lars
    • CSÁSZÁR, AndrásTAKÁCS, AttilaBÁDER, AttilaSZABO, RobertWESTBERG, Lars
    • H04L12/56
    • H04L47/115H04L43/026H04L43/0882H04L47/10H04L47/11H04L47/31Y02D50/30
    • A system a core (104), an edge node (102, 103) and a method are provided for congestion handling in a packet switched network domain. In case of congestion overload is measured, the data packets in proportion to the overload are marked and the signaled overload is stored. At least one egress node (103) receives marked and not marked packets, decodes and counts the overload from the marked packets in a counting interval. Congestion report messages are sent to ingress nodes (102) where flows are terminated. A core node (104) comprises a storage means (314) taking into account the previously signaled overload, which are already being handled in a congestion handling control loop. An edge node (103) comprises means for adding new flows to the set of affected flows, means for identifying affected flows to be terminated so that the number of identified affected flows should generate together traffic equal to the overload, and means for removing flows to be terminated from set of affected flows. In an advantageous embodiment the market module (315) applies a hysteresis algorithm with a higher bound used to detect congestion and to trigger the marking of user data packets in proportion to the measured overload, and a lower bound used as the reference to measure the overload ratio.
    • 提供了一种核心(104),边缘节点(102,103)和方法,用于分组交换网络域中的拥塞处理。 在测量拥塞过载的情况下,标记与过载成比例的数据包,并存储信号过载。 至少一个出口节点(103)接收标记和未标记的分组,在计数间隔中对标记的分组进行解码和计数过载。 拥塞报告消息被发送到流停止的入口节点(102)。 核心节点(104)包括存储装置(314),其考虑了已经在拥塞控制控制环路中处理的先前发信号的过载。 边缘节点(103)包括用于将新的流添加到受影响的流集合的装置,用于识别待终止的受影响的流的装置,使得所识别的受影响的流的数量应该一起生成等于过载的流量,以及用于去除流到 由一组受影响的流量终止。 在有利的实施例中,市场模块(315)应用具有用于检测拥塞的较高边界的滞后算法,并且与测量的过载成比例地触发用户数据分组的标记,并且下限用作参考以测量过载 比。