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1.发明公开
公开(公告)号：EP3104562A1
公开(公告)日：2016-12-14
申请号：EP15193316.5
申请日：2015-11-06
发明人： Domzal, Jerzy , Wójcik, Robert
IPC分类号： H04L12/721 , H04L12/741 , H04L12/743
摘要： The invention relates to a router for data transmission in ICT networks, characterized in that it maintains two tables, namely a flow table associating a given flow with a route identifier, and route table containing the route IDs and information on them. Further the invention relates to a method of data transmission in ICT networks, characterized in that for the transmission of packets a domain route is used for selection of an output port of the router.
摘要翻译： 本发明涉及一种用于ICT网络中的数据传输的路由器，其特征在于，它维护两个表，即将给定流与路由标识符相关联的流表，以及包含路由ID和信息的路由表。 此外，本发明涉及ICT网络中的数据传输方法，其特征在于，为了传输分组，使用域路由来选择路由器的输出端口。
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2.发明公开Device and Method for multiple path packet routing 审中-公开Vorrichtung und Verfahren zumZielführenvon Paketen in mehreren Pfaden
公开(公告)号：EP2905932A1
公开(公告)日：2015-08-12
申请号：EP14162518.6
申请日：2014-03-29
IPC分类号： H04L12/803 , H04L12/707 , H04L12/721
CPC分类号： H04L45/24 , H04L45/38 , H04L45/54 , H04L47/125
摘要： The invention describes a device and a method for flow-aware multipath packet routing in computer networks. A router maintains a Flow Forwarding Table (FFT) containing identifiers of active flows and related router outgoing interface identifiers. Incoming packets which represent flows are analysed by the router. They are forwarded to the outgoing interface by an outgoing interface selector according to the Flow Forwarding Table (FFT), and the routing table is not consulted by the outgoing interface selector. When there is no entry corresponding to the flow represented by the incoming packet, the router adds the ID of the flow to the FFT, while the outgoing interface for the flow is taken from the current routing table. Accordingly, when the first packet representing a new flow arrives at the router, an outgoing interface identifier is selected using existing methods utilising routing tables. Packets are then directed to an outgoing interface according to the FFT. When the cost of a link is increased by a routing protocol, for example due to congestion, the routing protocol propagates cost change information and recalculates routes using new costs. Accordingly, routing tables on routers may change. However, the FFTs remain unchanged. This means that only new flows with identifiers not present in the FFT during an update are affected by routing table changes. Active flows present on the FFT list during the update are unaffected by changes. In times of congestion new flows are directed along alternative paths, whereas all existing traffic travels via existing paths, without change.
摘要翻译： 本发明描述了一种用于计算机网络中的流感知多路径分组路由的设备和方法。 路由器维护包含活动流标识符和相关路由器输出接口标识符的流转发表（FFT）。 表示流的传入数据包由路由器进行分析。 根据流转发表（FFT），它们由出站接口选择器转发到出接口，出站接口选择器不查询路由表。 当没有与由进入分组表示的流对应的条目时，路由器将流的ID添加到FFT，而流的出接口取自当前的路由表。 因此，当表示新流的第一分组到达路由器时，使用利用路由表的现有方法选择输出接口标识符。 然后根据FFT将数据包引导到输出接口。 当通过路由协议增加链路的成本时，例如由于拥塞，路由协议传播成本变化信息，并使用新的成本重新计算路由。 因此，路由器上的路由表可能会改变。 然而，FFT保持不变。 这意味着在更新期间只有具有标识符不存在于FFT中的新流将受到路由表更改的影响。 在更新期间，FFT列表上存在的活动流不受更改的影响。 在拥挤的时候，新流量沿着替代路径被引导，而所有现有的流量都经过现有的路径行进，而不改变。
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公开(公告)号：EP3104562B1
公开(公告)日：2019-10-30
申请号：EP15193316.5
申请日：2015-11-06
发明人： Domzal, Jerzy , Wójcik, Robert
IPC分类号： H04L12/721 , H04L12/741 , H04L12/743
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公开(公告)号：EP2905932B1
公开(公告)日：2018-12-26
申请号：EP14162518.6
申请日：2014-03-29
IPC分类号： H04L12/803 , H04L12/707 , H04L12/721
CPC分类号： H04L45/24 , H04L45/38 , H04L45/54 , H04L47/125
摘要： The invention describes a device and a method for flow-aware multipath packet routing in computer networks. A router maintains a Flow Forwarding Table (FFT) containing identifiers of active flows and related router outgoing interface identifiers. Incoming packets which represent flows are analysed by the router. They are forwarded to the outgoing interface by an outgoing interface selector according to the Flow Forwarding Table (FFT), and the routing table is not consulted by the outgoing interface selector. When there is no entry corresponding to the flow represented by the incoming packet, the router adds the ID of the flow to the FFT, while the outgoing interface for the flow is taken from the current routing table. Accordingly, when the first packet representing a new flow arrives at the router, an outgoing interface identifier is selected using existing methods utilising routing tables. Packets are then directed to an outgoing interface according to the FFT. When the cost of a link is increased by a routing protocol, for example due to congestion, the routing protocol propagates cost change information and recalculates routes using new costs. Accordingly, routing tables on routers may change. However, the FFTs remain unchanged. This means that only new flows with identifiers not present in the FFT during an update are affected by routing table changes. Active flows present on the FFT list during the update are unaffected by changes. In times of congestion new flows are directed along alternative paths, whereas all existing traffic travels via existing paths, without change.
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