公开(公告)号：US08817605B2

公开(公告)日：2014-08-26

申请号：US13538393

申请日：2012-06-29

Applicant: Kadangode K. Ramakrishnan ,  Rakesh Kumar Sinha ,  Ajay Kumar Todimala

Inventor： Kadangode K. Ramakrishnan ,  Rakesh Kumar Sinha ,  Ajay Kumar Todimala

IPC: G01R31/08

CPC classification number: H04L41/0816 ,  H04L41/06

Abstract: A second link in a network is reconfigured after failure of a first link, so that multiple-link failures may be survived. After receipt of an OSPF link state advertisement (LSA) indicating use of a backup path bl after the failure of link l, new backup paths are determined for each impacted link (x,y) that has a backup path sharing one or more links with the backup path bl. The new backup paths are computed while ignoring the failed link l, the impacted link (x,y), and links common to the backup paths b(x,y) and bl. The LSA protocol is modified to accommodate information used in determining whether a link is an impacted link.

Abstract translation: 网络中的第二个链路在第一个链路发生故障后被重新配置，从而多链路故障可能会被存活。 在收到指示在链路l故障之后使用备份路径b1的OSPF链路状态通告（LSA）之后，为每个受影响的链路（x，y）确定新的备份路径，该备份路径具有共享一个或多个链路的备份路径 备份路径bl。 计算新的备份路径，同时忽略故障链路l，受影响的链路（x，y）和备份路径b（x，y）和bl共同的链路。 修改LSA协议以适应用于确定链路是否是受影响链路的信息。

公开(公告)号：US20110122764A1

公开(公告)日：2011-05-26

申请号：US12592371

申请日：2009-11-24

Applicant: Kadangode K. Ramakrishnan ,  Rakesh Kumar Sinha ,  Ajay Kumar Todimala

Inventor： Kadangode K. Ramakrishnan ,  Rakesh Kumar Sinha ,  Ajay Kumar Todimala

IPC: H04J3/14

CPC classification number: H04L41/0816 ,  H04L41/06

Abstract: A second link in a network is reconfigured after failure of a first link, so that multiple-link failures may be survived. After receipt of an OSPF link state advertisement (LSA) indicating use of a backup path bl after the failure of link l, new backup paths are determined for each impacted link (x,y) that has a backup path sharing one or more links with the backup path bl. The new backup paths are computed while ignoring the failed link l, the impacted link (x,y), and links common to the backup paths b(x,y) and bl. The LSA protocol is modified to accommodate information used in determining whether a link is an impacted link.

Abstract translation: 网络中的第二个链路在第一个链路发生故障后被重新配置，从而多链路故障可能会被存活。 在收到指示在链路l故障之后使用备份路径bl的OSPF链路状态通告（LSA）之后，为每个受影响的链路（x，y）确定新的备份路径，该备份路径具有共享一个或多个链路的备份路径 备份路径bl。 计算新的备份路径，同时忽略故障链路l，受影响的链路（x，y）和备份路径b（x，y）和bl共同的链路。 修改LSA协议以适应用于确定链路是否是受影响链路的信息。

公开(公告)号：US20120269058A1

公开(公告)日：2012-10-25

申请号：US13538393

申请日：2012-06-29

Applicant: Kadangode K. Ramakrishnan ,  Rakesh Kumar Sinha ,  Ajay Kumar Todimala

Inventor： Kadangode K. Ramakrishnan ,  Rakesh Kumar Sinha ,  Ajay Kumar Todimala

IPC: H04L12/24

CPC classification number: H04L41/0816 ,  H04L41/06

Abstract: A second link in a network is reconfigured after failure of a first link, so that multiple-link failures may be survived. After receipt of an OSPF link state advertisement (LSA) indicating use of a backup path bl after the failure of link l, new backup paths are determined for each impacted link (x,y) that has a backup path sharing one or more links with the backup path bl. The new backup paths are computed while ignoring the failed link l, the impacted link (x,y), and links common to the backup paths b(x,y) and bl. The LSA protocol is modified to accommodate information used in determining whether a link is an impacted link.

Abstract translation: 网络中的第二个链路在第一个链路发生故障后被重新配置，从而多链路故障可能会被存活。 在收到指示在链路l故障之后使用备份路径b1的OSPF链路状态通告（LSA）之后，为每个受影响的链路（x，y）确定新的备份路径，该备份路径具有共享一个或多个链路的备份路径 备份路径bl。 计算新的备份路径，同时忽略故障链路l，受影响的链路（x，y）以及备份路径b（x，y）和bl共同的链路。 修改LSA协议以适应用于确定链路是否是受影响链路的信息。

公开(公告)号：US08243586B2

公开(公告)日：2012-08-14

申请号：US12592371

申请日：2009-11-24

Applicant: Kadangode K. Ramakrishnan ,  Rakesh Kumar Sinha ,  Ajay Kumar Todimala

Inventor： Kadangode K. Ramakrishnan ,  Rakesh Kumar Sinha ,  Ajay Kumar Todimala

IPC: G01R31/08

CPC classification number: H04L41/0816 ,  H04L41/06

Abstract: A second link in a network is reconfigured after failure of a first link, so that multiple-link failures may be survived. After receipt of an OSPF link state advertisement (LSA) indicating use of a backup path bl after the failure of link l, new backup paths are determined for each impacted link (x,y) that has a backup path sharing one or more links with the backup path bl. The new backup paths are computed while ignoring the failed link l, the impacted link (x,y), and links common to the backup paths b(x,y) and bl. The LSA protocol is modified to accommodate information used in determining whether a link is an impacted link.

Abstract translation: 网络中的第二个链路在第一个链路发生故障后被重新配置，从而多链路故障可能会被存活。 在收到指示在链路l故障之后使用备份路径b1的OSPF链路状态通告（LSA）之后，为每个受影响的链路（x，y）确定新的备份路径，该备份路径具有共享一个或多个链路的备份路径 备份路径bl。 计算新的备份路径，同时忽略故障链路l，受影响的链路（x，y）和备份路径b（x，y）和bl共同的链路。 修改LSA协议以适应用于确定链路是否是受影响链路的信息。