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公开(公告)号：EP3672168A1
公开(公告)日：2020-06-24
申请号：EP18855730.0
申请日：2018-09-12
发明人： ZHENG, Xiuli , XU, Xiaohu , HU, Nongda , WANG, Chuang , CHEN, Zhe , LIU, Bingyang
IPC分类号： H04L12/715 , H04L12/751 , H04L12/721 , H04L12/753
摘要： This application discloses a link-state advertisement LSA sending method, an apparatus, and a system, and relates to the communications field, to reduce a quantity of LSA sending times. The method includes: generating, by a first router, a first path table based on level location information of the first router, level location information of a second router, and level location information of at least one third router; sending, by the first router, a first link state update LSU message to the second router; receiving, by the second router, the first link state update LSU message from the first router; updating, by the second router, a link state database LSDB of the second router based on a first LSA; and sending, by the second router, the first LSA to a router corresponding to an identifier in the first path table. Embodiments of this application are applied to sending an LSA in a leaf-spine topology or a fat-tree topology.
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公开(公告)号：EP2978176B1
公开(公告)日：2020-05-27
申请号：EP14806953.7
申请日：2014-05-16
发明人： XU, Xiaohu
IPC分类号： H04L12/46 , H04L12/723 , H04L12/715
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公开(公告)号：EP3021529B1
公开(公告)日：2017-11-08
申请号：EP14845726.0
申请日：2014-09-04
发明人： XU, Xiaohu , ZHANG, Dacheng
IPC分类号： H04L12/46 , H04L12/741 , H04L12/715
CPC分类号： H04L45/745 , H04L12/4641 , H04L12/4675 , H04L45/04 , H04L61/2007 , H04L61/6022
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公开(公告)号：EP2993942B1
公开(公告)日：2017-02-15
申请号：EP15185312.4
申请日：2012-09-20
发明人： XU, Xiaohu , ZENG, Qing
IPC分类号： H04L12/725 , H04L12/751 , H04L12/715 , H04L12/741
CPC分类号： H04L45/14 , H04L45/02 , H04L45/04 , H04L45/302 , H04L45/54 , H04L69/329
摘要： Embodiments of the present invention relate to the field of communications technologies, and disclose a performance-based routing method and device, which can implement exchange of a performance route by expanding a BGP protocol. The method includes: receiving, by a first PCR, first performance routing information sent by a second PCR, where the first performance routing information includes a first performance parameter attribute; determining whether a performance route corresponding to the first performance routing information exists in an adjacent routing information base-in Adj-RIB-in of the first PCR; and adding the performance route to the Adj-RIB-in when the performance route does not exist in the Adj-RIB-in. In the performance-based routing method and device provided by the embodiments of the present invention, exchange of a performance route is implemented and the performance route is used for packet routing, thereby providing better service experience for a user.
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5.发明公开
公开(公告)号：EP2222029A1
公开(公告)日：2010-08-25
申请号：EP08800756.2
申请日：2008-09-02
发明人： XU, Xiaohu
IPC分类号： H04L12/28
CPC分类号： H04L45/04 , H04L45/02 , H04L45/021 , H04L2212/00
摘要： A method, system, and device for maintaining routes are provided. A communications network includes multiple point of presence (PoP) groups, where each of the PoP groups includes one or more PoP nodes. PoP nodes within the same PoP group issue routing information of the same super prefix. PoP nodes within different PoP groups issue routing information of different super prefixes. The method further includes the following steps. A PoP node acquires routing information of a detailed prefix covered by a super prefix issued by the PoP node and synchronizes the routing information of the detailed prefix with other PoP nodes within the same PoP group. The method, system, and device reduce flow of data forwarded by each PoP node.
摘要翻译： 提供了一种用于维护路由的方法，系统和设备。 通信网络包括多个存在点（PoP）组，其中每个PoP组包括一个或多个PoP节点。 同一PoP组内的PoP节点发出相同超前缀的路由信息。 不同PoP组内的PoP节点发出不同超前缀的路由信息。 该方法还包括以下步骤。 PoP节点获取由PoP节点发布的超级前缀所覆盖的详细前缀的路由信息，并将详细前缀的路由信息与同一PoP组内的其他PoP节点同步。 方法，系统和设备减少每个PoP节点转发的数据流。
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6.发明公开A METHOD AND SYSTEM FOR IMPROVING THE QUALITY OF COMMUNICATION BASED ON THE LABEL DISTRIBUTION PROTOCOL 有权VERFAHREN UND系统ZUR VERBESSERUNG DERKOMMUNIKATIONSQUALITÄTAUF GRUNDLAGE DES ETIKETTENVERTEILUNGSPROTOKOLLS
公开(公告)号：EP1998496A1
公开(公告)日：2008-12-03
申请号：EP07702256.4
申请日：2007-02-02
发明人： CAO, Wei , XU, Xiaohu
IPC分类号： H04L12/18
CPC分类号： H04L45/16 , H04L45/02 , H04L45/023 , H04L45/28 , H04L45/50
摘要： A method and system for improving a quality of communication based on a label distribution protocol is provided, and the method includes the following steps. When a local label switching router (LSR) finds out a change of a route at an upstream node in a multicast label switching path (LSP), it calculates and sets up a new optimized multicast LSP according to the label distribution protocol (LDP), and delays to send a withdraw request to the upstream node in the former multicast LSP. Through the embodiments of the disclosure, an interruption of the data stream in the multicast LSP reconstruction procedures can be avoided or reduced, so that the losing of data packets caused by the multicast LSP adjustment is greatly reduced, and the quality of communication of the multicast is improved.
摘要翻译： 提供了一种基于标签分发协议提高通信质量的方法和系统，该方法包括以下步骤。 当本地标签交换路由器（LSR）发现组播标签交换路径（LSP）上游节点的路由发生变化时，根据标签分发协议（LDP）计算并建立新的优化组播LSP， 并将延迟发送到前一个组播LSP中的上游节点。 通过本发明的实施例，可以避免或减少组播LSP重建过程中的数据流的中断，从而大大降低了由组播LSP调整造成的数据包丢失，并且组播的通信质量 改进了
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7.发明公开A METHOD, ROUTER AND SYSTEM FOR MULTICAST STREAM FORWARDING 有权EIN VERFAHREN，ROUTER UND SYSTEM ZUR WEITERLEITUNG VON MULTICAST-STRÖMEN
公开(公告)号：EP1950914A1
公开(公告)日：2008-07-30
申请号：EP06840644.6
申请日：2006-12-26
发明人： XU, Xiaohu
IPC分类号： H04L12/28
摘要： A router and system for forwarding a multicast stream is provided. when a unicast route from a router to a multicast source or a rendezvous point changes from a first route to a second route, the method includes establishing a new multicast forwarding path between the router and a second upstream router corresponding to the second route, keeping forwarding a multicast stream received via an prior multicast forwarding path, pruning the prior multicast forwarding path if the router receives the multicast stream via the new multicast path, and forwarding the multicast stream via the new multicast forwarding path. Therefore, multicast stream will be forwarded continuously during the switchover process.
摘要翻译： 提供了一种转发组播流的路由器和系统。 当从路由器到组播源或集合点的单播路由从第一路由改变到第二路由时，该方法包括在路由器与对应于第二路由的第二上游路由器之间建立新的组播转发路径，保持转发 通过先前的组播转发路径接收的组播流，如果路由器经由新的组播路径接收到组播流，则修剪先前的组播转发路径，并通过新的组播转发路径转发组播流。 因此，在切换过程中组播流将被连续转发。
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公开(公告)号：EP3094052B1
公开(公告)日：2020-03-11
申请号：EP16165904.0
申请日：2008-06-24
发明人： XU, Xiaohu , GUO, Dayong
IPC分类号： H04L12/701
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公开(公告)号：EP3240230A1
公开(公告)日：2017-11-01
申请号：EP16739734.8
申请日：2016-01-11
发明人： XU, Xiaohu
IPC分类号： H04L12/18
摘要： This application discloses a multicast forwarding method and an apparatus, so as to help a BFIR obtain information about a BFER included in a multicast group and help implement rapid deployment of a BIER multicast network. A BFER in a BIER network may determine, according to information that is about a multicast group in a multicast receiver list and that is obtained in advance, an IP address of a registration router that supports the multicast group; the BFER generates a BFER registration message according to the information about the multicast group and the IP address of the registration router that supports the multicast group, where the BFER registration message includes the information about the multicast group, a destination IP address of the BFER registration message is the IP address of the registration router, and a source IP address of the BFER registration message is an IP address of the BFER; and the BFER sends the BFER registration message to the registration router. After receiving the BFER registration message sent by the BFER, the registration router in the BIER network may obtain a BFER entry according to the BFER registration message, where the BFER entry includes the information about the multicast group and the IP address of the BFER.
摘要翻译： 本申请公开了一种组播转发方法及装置，以帮助BFIR获取组播组中包含的BFER的信息，有助于实现BIER组播网络的快速部署。 BIER网络中的BFER可以根据关于组播接收者列表中的组播组的信息，并且预先获得的信息来确定支持该组播组的注册路由器的IP地址; BFER根据组播组的信息和支持该组播组的注册路由器的IP地址生成BFER注册消息，BFER注册消息中包含组播组的信息，BFER注册的目的IP地址 message为注册路由器的IP地址，BFER注册消息的源IP地址为BFER的IP地址; BFER将BFER注册消息发送给注册路由器。 在接收到BFER发送的BFER注册消息后，BIER网络中的注册路由器可以根据BFER注册消息获取BFER表项，BFER表项中包含组播组的信息和BFER的IP地址。
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10.发明公开PROCESSING METHOD AND RELATED DEVICE FOR HOST ROUTE IN VIRTUAL SUB-NETWORK, AND COMMUNICATION SYSTEM 审中-公开加工及相关设备，用于虚拟网络的主机路由下和通信系统
公开(公告)号：EP3110087A1
公开(公告)日：2016-12-28
申请号：EP15751835.8
申请日：2015-01-04
发明人： XU, Xiaohu , ZHANG, Dacheng
IPC分类号： H04L12/741 , H04L29/12
CPC分类号： H04L45/741 , H04L45/04 , H04L45/18 , H04L45/586 , H04L45/66 , H04L45/745
摘要： Embodiments of the present invention disclose a method for processing a host route in a virtual subnet, a related device and a communications system. The method for processing a host route in the virtual subnet includes: receiving, by a first provider edge device, a packet for address resolution, where a virtual subnet site in which the first provider edge device is located further includes at least one second provider edge device; determining, by the first provider edge device, whether a source MAC address carried in the packet is a virtual MAC address; and when it is determined that the source MAC address is a virtual MAC address, skipping performing at least one of the following operations: saving a local CE host routing table entry corresponding to a source IP address carried in the packet, or distributing, in the virtual subnet based on a routing protocol of a layer 3 VPN, a local CE host route corresponding to the IP address. Technical solutions of the embodiments of the present invention are helpful to avoid forming a CE host routing loop to a greatest extent, further improving efficiency of data packet transmission between CE hosts.
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