在catos交换机上,root guard默认是禁止的。可以用下命令激活 set spantree guard rootmod/port 在cisco ios交换机上,root guard默认在接口是禁止的。可以用下命令激活 spanning-tree rootguard 必须在在所有永远不成为根交换机上的所有接口上配置该特性。 SW1和SW2是应该成为根交换机的,因此应该在下面的接口上激活...
Cisco认证CCNP高级网络工程师 Guard Root 根保护配置,是爱奇艺教育类高清视频,于20201231上映。内容简介:路由和交换 (CCNP Routing and Switching) 是思科Cisco认证的方向之一,通过学习CCNP RS,可以具备对本地局域网及广域网的设计,实施,验证,故障排除及与其他网络
Here SW-A will be root and it port is error becuase we config root guard in it interface. So this case we dont config root guard in root bridge. Instead we config root guard in SW-C port connect to all except port connect to SW-A and SW-B (primary and secondary root bridge)...
%SPANTREE-2-ROOTGUARDBLOCK: Port 1/1 tried to become non-designated in VLAN 77. Moved to root-inconsistent state 如果希望在第2层接入端口上启用根防护特性,进而使其成为指定端口,或者希望禁用根防护特性,那么就需要在基于Cisco IOS软件的Catalyst交换机上执行下列接口级别的命令: [no] spanning-tree guard...
Below is an example of where to configure Root Guard on the ports. Notice that Root Guard is always configure on designated ports. To configure Root Guard use this command: Switch(config-if)#spanning-tree guard root Reference:http://www.cisco.com/c/en/us/support/docs/lan-switching/spanning...
In addition to root guard, you can also consider implementing other STP protection mechanisms such as BPDU guard, BPDU filter, and loop guard. These mechanisms provide additional layers of protection to safeguard your spanning tree topology from potential issues or attacks. https://www.cisco.com/...
Root Guard(根保护) 传统的802.1D STP没有给网络管理员提供确保交换式第2层网络拓扑安全。如下图,当新接入的交换机优先级更低,将抢占原有的根网桥。 根保护的目的是确保启用了根保护的端口成为指定端口。通常一个根桥的所有端口均为指定端口。除非连接到两个或多根网桥的端口。如果网桥在启用根保护的端口上收到...
Cisco Catalyst交换机默认开启pvst;所有接口默认启用STP. STP采用生成树算法(STA),它首先创建一个拓扑数据库,然后搜索并破坏掉冗余的链路. STP协议: 1.CST(公有协议) 不支持单Vlan(stp进程) ; 2.PVST(思科私有协议) 支持64个Vlan实例 ; 3.PVST+(思科增强的私有协议) 支持128个实例,支持扩展系统ID. ...
The method has the steps of: setting a port of the switch to root guard protected status (RG status); selecting by a spanning tree protocol (STP) the port as a designated port; and setting said port into blocked status, in response to said port being both in root guard protected status...
%SPANTREE-2-ROOTGUARDBLOCK: Port 1/1 tried to become non-designated in VLAN 77. Moved to root-inconsistent state Verfügbarkeit Root Guard ist auf einem Catalyst 6500/6000 verfügbar, auf dem die Cisco IOS®-Systemsoftware ausgeführt wird. Diese Funktion wurde erstmals mit Cisco IOS Soft...