公开(公告)号：US20040218551A1

公开(公告)日：2004-11-04

申请号：US10824378

申请日：2004-04-15

Applicant: ECI TELECOM LTD

Inventor： Noam Goldberg ,  Igor Balter ,  Idan Kaspit

IPC: H04L012/28

CPC classification number: H04L45/48 ,  H04L12/462 ,  H04L12/4641

Abstract: A method for utilizing a Spanning Tree Protocol (STP) in an Ethernet network wherein a number of VLANs are defined and a plurality of Ethernet switching nodes (A, B, C D E, F, G H) are interconnected via their ports (A1, . . . ,H4) so that each of the ports is initially assigned to one or more VLANs, and each of the VLANs is intended to enable traffic between two or more edge ports (D3, B3). The method comprises also-called pruning procedure initiated upon establishing a new STP topology (30) related to one or more VLANs. This procedure concerns a broadcast domain of at least one of the VLANs and is aimed at obtaining a sub-tree for each pruned VLAN in the new STP topology. The sub-tree is usually shrunk, bound by the edge ports assigned to the corresponding pruned VLAN, and thus eliminates broadcast traffic of the pruned VLAN to any Ethernet switch extending beyond the obtained sub-tree.

Abstract translation: 一种在以太网中利用生成树协议（STP）的方法，其中定义了多个VLAN，并且多个以太网交换节点（A，B，CDE，F，GH）经由其端口（A1，...， ，H4），使得每个端口最初被分配给一个或多个VLAN，并且每个VLAN旨在启用两个或更多个边缘端口（D3，B3）之间的流量。 该方法还包括在建立与一个或多个VLAN相关的新STP拓扑（30）时启动的也称为修剪过程。 该过程涉及至少一个VLAN的广播域，并且旨在获得新STP拓扑中每个修剪的VLAN的子树。 子树通常​​被收缩，由分配给相应修剪的VLAN的边缘端口绑定，从而消除了修剪的VLAN到超出所获得的子树的任何以太网交换机的广播流量。