EX交换机RSTP设置、冗余链路配置解析.docx

内容：1\RSTP配置案例指南2\接入冗余链路配置指南Redundant Trunk Links for Faster Recovery（12页）注意：上述两种链路冗余方式同一个交换机上只能够用一种。几种查看STP状态的命令：show spanning-tree bridge 查看网络拓扑信息show spanning-tree interface 查看端口信息?show spanning-tree bridge detail 查看拓扑改变信息monitor interface traffic 查看端口转发数据包的信息1、Example: Configuring Faster Convergence and Improving Network Stability with RSTP on EX Series SwitchesEX Series switches use Rapid Spanning Tree Protocol (RSTP) by default to provide a loop-free topology. RSTP works by identifying certain links as point to point links and blocking other possible paths. When one of the point-to-point links fails, a designated alternate link transitions to the forwarding state and take over. When switches that support redundant routing engines use RSTP, it is important to keep RSTP synchronized on both Routing Engines so that no loss of service occurs after a Routing Engine switchover. Configuring nonstop bridging (NSB) on a switch with redundant Routing Engines keeps RSTP synchronized on both Routing Engines. This way, RSTP remains active immediately after a switchover because it is already synchronized to the backup Routing Engine. RSTP does not have to reconverge after a Routing Engine switchover when NSB is enabled because the neighbor devices do not detect an RSTP change on the switch.This example describes how to configure RSTP and NSB on four EX Series switches:RequirementsOverview and TopologyConfiguring RSTP and NSB on Switch 1Configuring RSTP and NSB on Switch 2Configuring RSTP and NSB on Switch 3Configuring RSTP and NSB on Switch 4VerificationRequirementsThis example uses the following hardware and software components:Junos OS Release 9.0 or later for EX Series switchesFour EX Series switchesBefore you configure the switches for RSTP, be sure you have:Installed the four switches. See Connecting and Configuring an EX Series Switch (J-Web Procedure).Performed the initial software configuration on all switches. See Installing and Connecting an EX3200 Switch.Overvi