Run theterminal debuggingandterminal monitorcommands before using this command. Configuration Impact The debugging command affects system performance. After debugging is complete, run the undo command immediately to disable debugging. Example # Enable STP debugging. ...
Use thespanning-tree bpduGlobal Configuration mode command to define Bridge Protocol Data Unit (BPDU) handling when the spanning tree is disabled globally or on a single interface. Use thenoform of this command to restore the default configuration. Syntax spanning-tree bpdu{filtering|flooding}...
指定端口是指用来传递消息的端口 首先需要确认的一点就是,根网桥上的所有端口都是指定端口。 这个应该就很好理解了,根网桥,所有的端口肯定都要传递数据转发数据帧的,总不至于把根都切断了吧(断。。。根。。。断子绝孙?😱👀) 所以指定端口是在非根网桥上进行选择的,需要遵循以下四步: BPDU中的根网桥ID 到达...
Protocol Status Spanning tree protocol status. Protocol Std. Spanning tree protocol standard. Version Spanning tree protocol version. Bridge-Prio. The router’s priority in the CIST. MAC address MAC address of the router. Max age(s) Aging timer (in seconds) for BPDUs. Forward delay(s) Port...
Spanning tree protocol commands LAN Switching Command Reference, Cisco IOS XE Release 3SE (Catalyst 3850 Switches) Error Message Decoder DescriptionLink To help you research and resolve system error messages in this release, use the Error Message Decoder tool. https:/...
Because STP is unable to recognize VLANs and usually exhibits poor performance overall, STP is not the preferred spanning tree protocol to use in VLAN-rich environments. However, all participating interfaces in the spanning tree must use the same spanning tree protocol at any given time. Thus, ...
生成树协议(Spanning Tree Protocol,STP)是交换式以太网中的重要概念和技术,该协议的目的是在实现交换机之间的冗余连接的同时,避免网络环路的出现,实现网络的高可靠性。它通过在交换机之间传递桥接协议数据单元(Bridge Protocol Data Unit,BPDU)来互相告知诸如交换机的桥ID、链路性质、根桥(Root Bridge)ID等信息,以确...
# In PVST mode, display the spanning tree status and statistics for all ports in all VLANs. <Sysname> system-view [Sysname] stp mode pvst [Sysname] display stp ---[VLAN 1 Global Info]--- Protocol status : Enabled Bridge ID : 32768.000f-e200-2...
IEEE提出基于802.1D标准的生成树协议STP(Spanning Tree Protocol) 应用:这是最基础的破环协议,一般交换机上都可以使用。其有设计上的缺点:收敛速度慢,不区分业务流量等。具体和其他破环协议相比都有哪些优缺点,我们今后会总结。但实际使用环境中,适合自己的才是最好的。 STP中使用的名称概念 网桥:在STP协议的网络...
STP:Spanning Tree Protocol 生成树协议 作用:防止交换环路 原理:通过运行stp 算法,阻塞特定的接口实现冗余无环的网络。 stp 算法:大原则:先选出不被阻塞的接口,剩下的接口都会被阻塞。 ① 整个网络(整个广播域)先选出根桥。先比较优先级 再比较mac地址,越小越优先。根桥上面的端口都是指定端口。