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1. 发明申请

WO2005119949A1 REOPTIMIZATION TRIGGERING BY PATH COMPUTATION ELEMENTS 审中-公开
标题翻译：通过路径计算元素进行的重构触发
公开(公告)号：WO2005119949A1
公开(公告)日：2005-12-15
申请号：PCT/US2005/008205
申请日：2005-03-10
申请人： CISCO TECHNOLOGY, INC. , VASSEUR, Jean, Philippe , WARD, David , SIVABALAN, Muthurajah , GOGUEN, Robert
发明人： VASSEUR, Jean, Philippe , WARD, David , SIVABALAN, Muthurajah , GOGUEN, Robert
IPC分类号： H04J1/16
CPC分类号： H04L45/12 , H04L45/04 , H04L45/125 , H04L45/42 , H04L45/44 , H04L45/50 , H04L45/70 , H04L47/125 , H04L47/762 , H04L47/822 , H04L47/825
摘要： A mechanism to alleviate bandwidth fragmentation in a network employing path computation element(s) to place MPLS Traffic Engineering tunnels. One application is a multiple Autonomous System or multiple area network employing distributed computation of MPLS Traffic Engineering LSPs. A particular path computation element may determine that bandwidth fragmentation is present based on monitoring of path computation failures where desired paths are blocked due to bandwidth constraints. In response to the detected bandwidth fragmentation condition, the path computation element floods a routing notification within its Autonomous System or area. Nodes respond to the routing notification by requesting reoptimization of their own previously requested Traffic Engineering LSPs allowing the path computation element an opportunity to alleviate bandwidth fragmentation.
摘要翻译：一种减轻使用路径计算元素的网络中带宽分段的放置MPLS流量工程隧道的机制。一个应用是采用MPLS流量工程LSP的分布式计算的多自治系统或多区域网络。特定路径计算元件可以基于由于带宽限制阻止期望路径的路径计算失败的监视来确定存在带宽分段。响应于检测到的带宽分段条件，路径计算元件在其自治系统或区域内泛洪路由通知。节点通过请求重新优化自己先前请求的流量工程LSP来响应路由通知，允许路径计算元素减轻带宽分段的机会。

2. 发明申请

WO2009114075A2 MODEM TIMING OFFSET COMPENSATION FOR LINE CARD REDUNDANCY FAILOVER 审中-公开
标题翻译：线路卡冗余故障的调制解调器时序偏移补偿
公开(公告)号：WO2009114075A2
公开(公告)日：2009-09-17
申请号：PCT/US2009/001270
申请日：2009-02-27
申请人： CISCO TECHNOLOGY, INC. , LI, De, Fu , SOWINSKI, Pawel , AN, James , GOGUEN, Robert, J.
发明人： LI, De, Fu , SOWINSKI, Pawel , AN, James , GOGUEN, Robert, J.
IPC分类号： H04L12/28 , H04W28/20
CPC分类号： H04L5/1438 , H04J3/0655 , H04J3/0682 , H04J3/14 , H04L12/2801 , H04L12/2861 , H04L12/287 , H04L12/2898
摘要： In one embodiment, a first ranging timing description describing at least a duration of time during which a subject cable modem (CM) may burst and a duration of time during which the subject CM and other CMs in a multiple access network are not permitted to burst is translated into a second ranging timing description describing a duration during which a burst from the subject CM is expected to be received by a cable modem termination system (CMTS). The CMTS is conditioned to receive a burst from the subject CM during the duration of time described by the second ranging timing description. A timing offset is determined from at least an actual time a burst from the subject CM is received by the CMTS and the duration of time during which the subject CM and other CMs in the multiple access network are not permitted to burst to produce a determined timing offset. The determined timing offset is reported to compensate for delay in the multiple access network and the subject CM.
摘要翻译：在一个实施例中，描述主题电缆调制解调器（CM）可以突发的至少一段持续时间的第一测距定时描述和多个接入网络中的主体CM和其他CM不允许突发的持续时间被描述为描述来自主题CM的脉冲串期望由电缆调制解调器终端系统（CMTS）接收的持续时间的第二测距定时描述。 CMTS被调节为在由第二测距定时描述描述的持续时间期间从主题CM接收突发。从CMTS接收到来自主题CM的突发的至少实际时间以及多访问网络中的主体CM和其他CM不允许突发以产生确定的定时的持续时间的确定时间确定定时偏移抵消。报告确定的定时偏移以补偿多址网络和对象CM中的延迟。

3. 发明申请

WO2005039085A2 ENHANCED SWITCHOVER FOR MPLS FAST REROUTE 审中-公开
标题翻译：用于MPLS快速REROUTE的增强型交换机
公开(公告)号：WO2005039085A2
公开(公告)日：2005-04-28
申请号：PCT/US2004/031319
申请日：2004-09-23
申请人： CISCO TECHNOLOGY, INC. , GOGUEN, Robert , LO, Alton
发明人： GOGUEN, Robert , LO, Alton
IPC分类号： H04L
CPC分类号： H04L45/00 , H04L45/28 , H04L45/50
摘要： A Fast Reroute implementation where switchover time to backup tunnels upon failure of a protected network element is independent of a number of entries corresponding to forwarding equivalence classes forwarding over LSPs using that element. During normal operation of a packet forwarding device, adjacency information for a received packet is retrieved from a forwarding table based on a look-up of the packet’s forwarding equivalence class. Upon failure of a link or node, the appropriate entries in this forwarding table are rewritten to implement the switchover to preconfigured backup tunnels. The switchover is effective even before the rewrite process has completed. Upon detection of the failure, forwarding processing shifts to a fix-up mode. During the fix-up mode, the look-up to the previously mentioned forwarding table is followed by a look-up to a backup tunnel adjacency table based on a pointer retrieved from the forwarding table. Operations relating to use of this backup tunnel adjacency table increase forwarding time somewhat but only during the special fix-up mode.
摘要翻译：在受保护的网络元件发生故障时，备份隧道的切换时间的快速重路由独立于与使用该元素的LSP上的转发等价类转发相对应的条目数。在分组转发设备的正常操作期间，基于分组的转发等价类的查找，从转发表中检索接收到的分组的邻接信息。在链路或节点发生故障时，将重写此转发表中的相应条目，以实现对预先配置的备份隧道的切换。即使在重写过程完成之前，切换也是有效的。在检测到故障时，转发处理转移到固定模式。在修复模式期间，前面提到的转发表的查找之后是基于从转发表检索的指针来查找备份隧道邻接表。与使用此备份隧道邻接表相关的操作稍微增加了转发时间，但仅在特殊的修复模式期间。

4. 发明申请

WO2009114075A3 MODEM TIMING OFFSET COMPENSATION FOR LINE CARD REDUNDANCY FAILOVER 审中-公开
标题翻译： MODEM时隙补偿补偿线卡冗余失效
公开(公告)号：WO2009114075A3
公开(公告)日：2009-11-26
申请号：PCT/US2009001270
申请日：2009-02-27
申请人： CISCO TECH INC , LI DE FU , SOWINSKI PAWEL , AN JAMES , GOGUEN ROBERT J
发明人： LI DE FU , SOWINSKI PAWEL , AN JAMES , GOGUEN ROBERT J
IPC分类号： H04L12/28 , H04W28/20
CPC分类号： H04L5/1438 , H04J3/0655 , H04J3/0682 , H04J3/14 , H04L12/2801 , H04L12/2861 , H04L12/287 , H04L12/2898
摘要： In one embodiment, a first ranging timing description describing at least a duration of time during which a subject cable modem (CM) may burst and a duration of time during which the subject CM and other CMs in a multiple access network are not permitted to burst is translated into a second ranging timing description describing a duration during which a burst from the subject CM is expected to be received by a cable modem termination system (CMTS). The CMTS is conditioned to receive a burst from the subject CM during the duration of time described by the second ranging timing description. A timing offset is determined from at least an actual time a burst from the subject CM is received by the CMTS and the duration of time during which the subject CM and other CMs in the multiple access network are not permitted to burst to produce a determined timing offset. The determined timing offset is reported to compensate for delay in the multiple access network and the subject CM.
摘要翻译：在一个实施例中，第一测距定时描述至少描述对象电缆调制解调器（CM）可能爆发的持续时间以及多址网络中的对象CM和其他CM不被允许爆发的持续时间被转换成第二测距定时描述，其描述期间来自主体CM的脉冲串预期将由电缆调制解调器终端系统（CMTS）接收的持续时间。 CMTS被调节为在由第二测距定时描述所描述的持续时间期间从主体CM接收突发。定时偏移至少由CMTS接收到来自主体CM的脉冲串的实际时间以及多路接入网络中的主体CM和其他CM不被允许突发产生确定的定时的持续时间来确定抵消。报告所确定的定时偏移以补偿多址网络和主体CM中的延迟。

5. 发明申请

WO2005039085A3 ENHANCED SWITCHOVER FOR MPLS FAST REROUTE 审中-公开
标题翻译：用于MPLS快速REROUTE的增强型交换机
公开(公告)号：WO2005039085A3
公开(公告)日：2007-08-09
申请号：PCT/US2004031319
申请日：2004-09-23
申请人： CISCO TECH INC , GOGUEN ROBERT , LO ALTON
发明人： GOGUEN ROBERT , LO ALTON
IPC分类号： G06F15/173 , G06F15/16 , H04L20060101 , H04L12/28 , H04L12/56
CPC分类号： H04L45/00 , H04L45/28 , H04L45/50
摘要： A Fast Reroute implementation where switchover time to backup tunnels upon failure of a protected network element is independent of a number of entries corresponding to forwarding equivalence classes forwarding over LSPs using that element. During normal operation of a packet forwarding device, adjacency information for a received packet is retrieved from a forwarding table based on a look-up of the packet's forwarding equivalence class. Upon failure of a link or node, the appropriate entries in this forwarding table are rewritten to implement the switchover to preconfigured backup tunnels (Figure 4, step 408). The switchover is effective even before the rewrite process has completed. Upon detection of the failure, forwarding processing shifts to a fix-up mode. During the fix-up mode, the look-up to the previously mentioned forwarding table is followed by a look-up to a backup tunnel adjacency table based on a pointer retrieved from the forwarding table. Operations relating to use of this backup tunnel adjacency table increase forwarding time somewhat but only during the special fix-up mode.
摘要翻译：在受保护的网络元件发生故障时，备份隧道的切换时间的快速重路由独立于与使用该元素的LSP上的转发等价类转发相对应的条目数。在分组转发设备的正常操作期间，基于分组的转发等价类的查找，从转发表中检索接收到的分组的邻接信息。在链路或节点发生故障时，将重写该转发表中的相应条目，以实现对预先配置的备份隧道的切换（图4，步骤408）。即使在重写过程完成之前，切换也是有效的。在检测到故障时，转发处理转移到固定模式。在修复模式期间，前面提到的转发表的查找之后是基于从转发表检索的指针来查找备份隧道邻接表。与使用此备份隧道邻接表相关的操作稍微增加了转发时间，但仅在特殊的修复模式期间。

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