1、于上图描述了案例中当前组网环境的各交换机位置与stp状态情况 ; 可以看出LSW3是stp域的网关;理所应当。stp的根桥应该落在LSW1上;并且LSW1上的eth0/0/1口本因是Designated port;现因为LSW4mac地址最小,stp根桥选在了LSW4上; 在排查过程中;通过远端lldp邻居 ;只能在LSW1上发现LSW2的lldp邻居,并无法发现...
[HUAWEI] stp vlan 10 root primary # Set the switching device as the secondary root bridge of spanning tree instance 4 when MSTP is running. <HUAWEI> system-view [~HUAWEI] stp instance 4 root secondary # Configure the switch as the secondary root bridge in VLAN 10 when VBST is running. ...
[HUAWEI] stp vlan 10 root primary # Set the switching device as the secondary root bridge of spanning tree instance 4 when MSTP is running. <HUAWEI> system-view [~HUAWEI] stp instance 4 root secondary # Configure the switch as the secondary root bridge in VLAN 10 when VBST is running. ...
Switch STP里的root bridge的选举条件 基于BridgeID。Switch的BridgeID共8字节,前两个字节是Switch的priority,后六个字节是端口的MAC地址。 首先比较各priority,最小的被选为root bridge。 priority默认值都是32768。当priority都一样时,比较MAC地址,最小的被选为root bridge。 root bridge的选举过程用BPDU包来交换信...
The switches would need to work out who the root switch is going to be. So STP starts in an initialising state and then, according to the docs, interfaces move into a Blocking state. As I see it, somewhere between initialisation and blocking, BPDU's are sent to elect the root. So...
In Image 1, Switches A and B comprise the core of the network, and A is the root bridge for a VLAN. Switch C is an access layer switch. The link between B and C is blocked on the C side. The arrows show the flow of STP BPDUs. ...
You dont apply rootguard to any switch interconnects (trunks) within a single stp domain doing so could lead to loss of stp convergenceSo I am assuming the reason those errors went away when you remove rootguard was the fact you had it previously applied to the wrong ports Please rate and...
Switch(config)# interface fastethernet 0/8 Switch(config-if)# spanning-tree rootguard Switch(config-if)# ^Z *Mar 15 20:15:16: %SPANTREE-2-ROOTGUARD_CONFIG_CHANGE: Rootguard enabled on port FastEthernet0/8 VLAN 1. Switch# Quelle est la différence entre STP BPDU Guard et STP Root ...
In the invention, an administrator of the core network identifies which switch ports in the core network are boundary ports to customer networks. The administrator designates the boundary ports as "root guard protected" ports (RG ports). The STP then executes as required by the ordinary STP ...
Root Switch Election All switches in the layer 2 network participating in STP gather information on other switches in the network through an exchange of data messages called BPDUs. The exchange of messages results in the following actions: Election of a unique root switch for each spanning tree ...