公开(公告)号：US20090185484A1

公开(公告)日：2009-07-23

申请号：US12333028

申请日：2008-12-11

申请人： Roland Bless ,  Gotz Lichtwald ,  Markus Schmidt

发明人： Roland Bless ,  Gotz Lichtwald ,  Markus Schmidt

IPC分类号： G06F11/00

CPC分类号： F03B17/04 ,  H04L45/04 ,  H04L45/22 ,  H04L45/28

摘要： The invention relates to a rapid response method for the failure of a link between two routing domains in a packet-oriented network. Once the failure of a link has been identified, substitute routes are provided for the interrupted routes by the local selection of alternative routes and by the propagation of messages along the substitute routes. In contrast to conventional inter-domain protocols such as the BGP (Iborder gateway protocol) the transmission of messages and the associated modification to the routing only involves routing domains that lie along the replacement routes. In one embodiment, a network-wide propagation of messages takes place if the failure of the link represents a persistent breakdown. As a consequence, optimal routes are re-determined in the entire network. The invention provides breakdown compensation that is appropriate for temporary breakdowns and prevents instabilities that occur as a result of the use of conventional inter-domain protocols.

摘要翻译： 本发明涉及一种用于在面向分组的网络中的两个路由域之间的链路故障的快速响应方法。 一旦确定了链路故障，通过本地选择替代路由和沿着替代路由的消息传播，为中断路由提供替代路由。 与诸如BGP（Iborder网关协议）的传统域间协议相反，消息的传输和对路由的相关修改仅涉及沿着替换路由的路由域。 在一个实施例中，如果链路的故障表示持续故障，则发生消息的网络范围传播。 因此，在整个网络中重新确定最佳路由。 本发明提供适用于临时故障的故障补偿，并防止由于使用常规域间协议而发生的不稳定性。

公开(公告)号：US07961598B2

公开(公告)日：2011-06-14

申请号：US12333028

申请日：2008-12-11

申请人： Roland Bless ,  Gotz Lichtwald ,  Markus Schmidt

发明人： Roland Bless ,  Gotz Lichtwald ,  Markus Schmidt

IPC分类号： H04L12/26

CPC分类号： F03B17/04 ,  H04L45/04 ,  H04L45/22 ,  H04L45/28

摘要： The invention relates to a rapid response method for the failure of a link between two routing domains in a packet-oriented network. Once the failure of a link has been identified, substitute routes are provided for the interrupted routes by the local selection of alternative routes and by the propagation of messages along the substitute routes. In contrast to conventional inter-domain protocols such as the BGP (Iborder gateway protocol) the transmission of messages and the associated modification to the routing only involves routing domains that lie along the replacement routes. In one embodiment, a network-wide propagation of messages takes place if the failure of the link represents a persistent breakdown. As a consequence, optimal routes are re-determined in the entire network. The invention provides breakdown compensation that is appropriate for temporary breakdowns and prevents instabilities that occur as a result of the use of conventional inter-domain protocols.

摘要翻译： 本发明涉及一种用于在面向分组的网络中的两个路由域之间的链路故障的快速响应方法。 一旦确定了链路故障，通过本地选择替代路由和沿着替代路由的消息传播，为中断路由提供替代路由。 与诸如BGP（Iborder网关协议）的传统域间协议相反，消息的传输和对路由的相关修改仅涉及沿着替换路由的路由域。 在一个实施例中，如果链路的故障表示持续故障，则发生消息的网络范围传播。 因此，在整个网络中重新确定最佳路由。 本发明提供适用于临时故障的故障补偿，并防止由于使用常规域间协议而发生的不稳定性。

公开(公告)号：US20080198741A1

公开(公告)日：2008-08-21

申请号：US11916248

申请日：2006-06-01

申请人： Gotz Lichtwald

发明人： Gotz Lichtwald

IPC分类号： G06F11/00

CPC分类号： H04L45/28 ,  H04L45/04 ,  H04L45/22

摘要： The present disclosure relates to a method for providing substitute routes in rapid response to the failure of a link between two routing domains in a packet-oriented network. After the failure of a link has been identified, substitute routes are provided for routes which have been interrupted by said failure by locally selecting alternative routes and propagating messages along the substitute routes. In order to provide substitute routes, an inter-domain router checks whether the router contains a substitute route. If there is no substitute route, a request message is transmitted to at least one adjacent inter-domain router and the transmission of at least one substitute route is thus requested. If there is a substitute route in the adjacent inter-domain router, the inter-domain router making the enquiries is informed of this in a response message. The present disclosure thus results in the improved provision of substitute routes in response to disruptions in inter-domain routing.

摘要翻译： 本公开涉及一种用于在面向分组的网络中的两个路由域之间的链路的故障的快速响应中提供替代路由的方法。 在确定链路故障之后，通过本地选择替代路由并沿着替代路由传播消息，为已经被所述故障中断的路由提供替代路由。 为了提供替代路由，域间路由器检查路由器是否包含替代路由。 如果没有替代路由，则向至少一个相邻的域间路由器发送请求消息，因此请求至少一个替代路由的传输。 如果在相邻的域间路由器中存在替代路由，则在响应消息中通知进行查询的域间路由器。 因此，本发明导致响应于域间路由中断的改进的替代路由的提供。

公开(公告)号：US20090016213A1

公开(公告)日：2009-01-15

申请号：US11916076

申请日：2006-06-01

申请人： Gotz Lichtwald

发明人： Gotz Lichtwald

IPC分类号： G06F11/00

CPC分类号： H04L63/1458 ,  H04L69/40

摘要： The present disclosure relates to methods for efficiently treating disturbances in the packet-based transmission of traffic by means of a routing protocol and routing entities. According to an exemplary embodiment, a message signaling the non-availability of a neighboring routing entity is inspected. Once the message signaling the non-availability of a neighboring routing entity is received, a test message for verifying the information is sent. If the non-availability is confirmed upon inspection, the system deduces that there is a failure of the connection to the neighboring routing entity. The routing entity then occasions a change in routing in order to circumvent the failed connection. This configuration reduces the operations required for fault recovery in the network and protects the system from false error messages generated to disturb the network.

摘要翻译： 本公开涉及通过路由协议和路由实体有效地处理业务的基于分组的传输中的干扰的方法。 根据示例性实施例，检查表示相邻路由实体的不可用性的消息。 一旦接收到指示相邻路由实体的不可用性的消息，则发送用于验证该信息的测试消息。 如果在检查后确认不可用性，则系统推断出与相邻路由实体的连接失败。 路由实体然后偶尔改变路由以避开失败的连接。 该配置减少了网络中故障恢复所需的操作，并保护系统免受产生干扰网络的虚假错误消息。

公开(公告)号：US20080192627A1

公开(公告)日：2008-08-14

申请号：US11916079

申请日：2006-06-01

申请人： Gotz Lichtwald

发明人： Gotz Lichtwald

IPC分类号： G01R31/08

CPC分类号： H04L45/12 ,  H04L43/50 ,  H04L45/04 ,  H04L45/22 ,  H04L45/28

摘要： The present disclosure relates to a method for providing substitute routes in rapid response to the failure of a link between two routing domains in a packet-oriented network. According to the present disclosure, an inter-domain router determines substitute routes for fault scenarios caused by link failures. The substitute routes are stored and are regularly checked for their availability. This makes it possible to ensure, to a high degree, that a substitute route which is suitable for diverting the traffic is ready in the event of a link failing.

摘要翻译： 本公开涉及一种用于在面向分组的网络中的两个路由域之间的链路的故障的快速响应中提供替代路由的方法。 根据本公开，域间路由器确定由链路故障引起的故障场景的替代路由。 替代路线存储并定期检查其可用性。 这使得可以在很大程度上确保在链路故障的情况下适合于转移业务的替代路由准备就绪。