公开(公告)号：WO2013100839A1

公开(公告)日：2013-07-04

申请号：PCT/SE2012/050212

申请日：2012-02-27

Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (publ) ,  LETTERE, Sabrina ,  GALLINO, Roberto ,  POGGI, Fabio

Inventor： LETTERE, Sabrina ,  GALLINO, Roberto ,  POGGI, Fabio

IPC: H04L12/56 ,  H04L12/46

CPC classification number: H04L45/025 ,  H04L12/437 ,  H04L41/12 ,  H04L45/18 ,  H04L45/48

Abstract: A method in a root bridge node for handling topology changes in an Ethernet network is provided. The Ethernet network comprises groups of bridge nodes that are only connected to each other via the root bridge node. The root bridge node and the bridge nodes may be configured to run a Spanning Tree Protocol, xSTP, to prevent ring loops among the bridge nodes in the groups of bridge nodes. The root bridge node comprises a number of ports, which number of ports is associated in the root bridge node with physical addresses of user equipments connected to the bridge nodes in the groups of bridge nodes. The number of ports is configured by the xSTP to have the role of designated ports. The method comprise: associating each port of the number of ports with one of the groups of bridge nodes; receiving a Topology Change Notification, TCN, on at least one port of the number of ports from a bridge node in one of the group of bridge nodes; identifying which group of bridge nodes that the at least one port which received the TCN is associated with; removing in the root bridge node, at least partly the associations between port or ports which are associated with the identified group of bridge nodes, and the physical addresses of the user equipments connected to the bridge nodes; and sending the TCN out on the port or ports of the number of ports which are associated with the identified group of bridge nodes. A root bridge node is also provided.

Abstract translation: 提供了一种用于处理以太网中拓扑变化的根网桥节点的方法。 以太网网络包括仅通过根网桥节点相互连接的网桥节点组。 可以将根桥节点和网桥节点配置为运行生成树协议xSTP，以防止网桥节点组中的网桥节点之间的环路环路。 根桥节点包括多个端口，其数量的端口在根网桥节点中与用户设备的物理地址相关联，连接到网桥节点组中的网桥节点。 端口数由xSTP配置为具有指定端口的角色。 该方法包括：将端口数量的每个端口与该桥接节点组中的一个相关联; 在所述一组桥接节点中的桥接节点的至少一个端口上接收拓扑变化通知TCN; 识别接收到所述TCN的所述至少一个端口相关联的哪个桥节点组; 在根网桥节点中至少部分地去除与所识别的网桥节点组相关联的端口或端口之间的关联以及连接到网桥节点的用户设备的物理地址; 并且在与所识别的网桥节点组相关联的端口数目的端口上发送TCN。 还提供了一个根桥节点。

公开(公告)号：WO2013156090A1

公开(公告)日：2013-10-24

申请号：PCT/EP2012/064277

申请日：2012-07-20

Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) ,  LETTERE, Sabrina ,  POGGI, Fabio ,  RISSO, Luca

Inventor： LETTERE, Sabrina ,  POGGI, Fabio ,  RISSO, Luca

IPC: H04L29/06

CPC classification number: H04L63/0236 ,  H04L61/103 ,  H04L61/6022 ,  H04L63/101

Abstract: An access network comprises an access node (20), such as an Internet Protocol Digital Subscriber Line Access Multiplexer, which connects to a plurality of users 30 of the access network. The access node (20) also connects to at least one gateway node (10). The access node (20) is arranged to obtain a MAC address of the gateway node (10). The access node (20) is arranged to inspect at least one MAC address of traffic received at the access node (20). The access node (20) is arranged to make a forwarding decision on the basis of the inspected at least one MAC address. Traffic in a downstream direction is forwarded if an inspected source MAC address is the MAC address of the gateway node (10) and traffic in an upstream direction is forwarded if an inspected destination MAC address is the MAC address of the gateway node (10). Direct traffic between the plurality of users (30) is not forwarded.

Abstract translation: 接入网络包括连接到接入网络的多个用户30的接入节点（20），诸如因特网协议数字用户线接入多路复用器。 接入节点（20）还连接至少一个网关节点（10）。 接入节点（20）被配置为获得网关节点（10）的MAC地址。 接入节点（20）被配置为检查在接入节点（20）处接收的业务的至少一个MAC地址。 接入节点（20）被配置为基于所检查的至少一个MAC地址进行转发决定。 如果被检查的源MAC地址是网关节点（10）的MAC地址，并且如果被检查的目的地MAC地址是网关节点（10）的MAC地址，则在上游方向上的业务被转发，则转发下游方向的流量。 多个用户（30）之间的直接流量不被转发。

公开(公告)号：WO2014037028A1

公开(公告)日：2014-03-13

申请号：PCT/EP2012/067186

申请日：2012-09-04

Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) ,  POGGI, Fabio ,  RISSO, Luca ,  GRILLO, Davide ,  SCALI, Daniele ,  TURCHETTI, Adolfo

Inventor： POGGI, Fabio ,  RISSO, Luca ,  GRILLO, Davide ,  SCALI, Daniele ,  TURCHETTI, Adolfo

IPC: H04L12/66 ,  H04L12/70 ,  H04L29/06

CPC classification number: H04L45/72 ,  H04L12/6418 ,  H04L61/6009 ,  H04L63/0236 ,  H04L63/1466 ,  H04L63/164

Abstract: There is provided a method of operating a switch (10; 22) or an access node (20) in a network (2; 12), the switch or access node having a plurality of interfaces (64) through which data packets (30) can be received and forwarded, the network (2; 12) further comprising one or more gateway nodes (6; 16) and one or more user terminals (4; 14), each of the gateway nodes and the user terminals having a respective address, the method in the switch or access node comprising identifying the address for at least one of the gateway nodes (101); comparing a source address (32) specified in a data packet received from a user terminal at one of the interfaces of the switch or access node to the identified addresses for the one or more gateway nodes (103, 105); storing the source address specified in the data packet and the identity of the interface through which the data packet was received if the source address specified in the data packet does not match an address for any of the one or more gateway nodes (107); and discarding the data packet if the source address specified in the data packet matches an address for any of the one or more gateway nodes (111).

Abstract translation: 提供了一种在网络（2; 12）中操作交换机（10; 22）或接入节点（20）的方法，所述交换机或接入节点具有多个接口（64），数据分组（30）通过该接口 所述网络（2; 12）还包括一个或多个网关节点（6; 16）和一个或多个用户终端（4; 14），所述网关节点和所述用户终端中的每一个具有相应的地址 所述交换机或接入节点中的方法包括识别所述网关节点（101）中的至少一个的地址; 将从所述交换机或接入节点的一个接口处的用户终端接收到的数据分组中指定的源地址（32）与所述一个或多个网关节点（103,105）的所识别的地址进行比较; 如果所述数据分组中指定的源地址与所述一个或多个网关节点（107）中的任一个的地址不匹配，则存储在所述数据分组中指定的源地址以及接收所述数据分组的接口的标识; 以及如果所述数据分组中指定的源地址与所述一个或多个网关节点（111）中的任何一个的地址匹配，则丢弃所述数据分组。