3228 the port fei_1/1 and fei_1/2 used in the STP configuration of the vswitch 3228-1 are connected to the vswitch 3228-2 and the vswitch 3228-3 respectively; vswitch 3228-2 uses ports fei_1/3 and fei_1/4 to connect to vswitch 3228-1 and vswitch 3228-3 respectively. vswitch 3228-3 uses ports fei_1/5 and fei_1/6 to connect to vswitch 3228-1 and vswitch 3228-2 respectively; the vswitch 3228-2 and vswitch 3228-3 respectively use the ports fei_1/7 and fei_1/8 to connect to the PC. Step 1: run the standard Spanning Tree Protocol between devices. Configure the Spanning Tree parameters of each device to make 3228-1 the root bridge. Observe whether the device can trim the Loop Based on the configured parameters to complete the Spanning Tree. 2. Disconnect the link between 3228-1 and 3228-2 and check whether the device can automatically reconstruct the network topology. 3. Run the fast Spanning Tree Protocol between the three devices, make 3228-1 a root bridge. 4. Disconnect the link between 3228-1 and 3228-2. Check whether the device can automatically reconstruct the network topology. 5. Set the link between the three devices to vlan trunk, and configure 5 VLANs: VLAN1-5. Run the MSTP Spanning Tree Protocol. VLAN1 and VLAN2 establish spanning tree 1, VLAN3 and VLAN4 create spanning tree 2, and VLAN5 create spanning tree 3. Modify the Spanning Tree parameters of each device so that the root bridge of Spanning Tree 1 and spanning tree 2 is 3228-1, the root bridge of Spanning Tree 3 is 3228-26. The link between 3228-1 and 3228-2 is disconnected. Check whether spanning tree 1 and spanning tree 2 can automatically reconstruct the network topology, VLAN5 services should not be affected 8.6.1 SSTP configuration three 3228 configurations are the same, the following is the configuration and Description: ZXR10 (config) # spanning-tree enable // enable tree Generation Protocol ZXR10 (config) # spanning-tree mode sstp // configure the current mode of the spanning tree Protocol to sstp. Assume that the current 3228-1 is not the root bridge, run the following configuration on 3228-2 and 3228-3: ZXR10 (config) # spanning-tree mst instance 0 priority 61440 // modify the bridge priority of instance 0, 61440 = 15*4096, the priority can be set to I * 4096, I = 0... 15. 8.6.2 The Three 3228 configurations of RSTP configuration are the same. The configuration and description are as follows: ZXR10 (config) # spanning-tree enable // enable tree Protocol ZXR10 (config) # spanning-tree mode rstp // the current mode of the spanning tree Protocol is rstp. If 3228-1 is not the root bridge, run the following configuration on 3228-2 and 3228-3: ZXR10 (config) # spanning-tree mst instance 0 priority 61440 // modify the bridge priority of instance 0, 61440 = 15*4096. You can set the priority to I * 4096 as needed, I = 0... 158.6.3 MSTP configuration three 3228 configurations are the same, the following is the configuration and Description: ZXR10 # vlan databaseZXR10 (vlan) # vlan 1-5 // configure the vlan1-5ZXR10 (config) # spanning-tree en Able // enable tree Generation Protocol ZXR10 (config) # spanning-tree mode mstp // configure the current mode of the spanning tree Protocol to mstpZXR10 (config) # spanning-tree mstp configuration // enter the MSTP configuration mode ZXR10 (config-mstp) # name zte // set the configuration name in mst_config_id to zte. ZXR10 (config-mstp) # revision 2 // set the configuration version number in mst_config_id to 2. ZXR10 (config-mstp) # instance 1 vlans 1, 2 // map vlan1, 2 to instance 1ZXR10 (config-mstp) # instance 2 vlans 3, 4 // vlan3, 4 ing to instance 2ZXR10 (config-mstp) # instance 3 vlans 5 // ing vlan5 to instance 3 assuming that the current spanning tree 1 and spanning tree 2 root bridges are not 3228-1, use spanning-tree mst instance <instance> priority <priority> to modify the priority of the corresponding spanning tree to meet the requirements. Similarly, the root bridge of spanning tree 3 can be set to 3228-2. 8.7 after the verification method executes the 9.6 configuration, you can use the PC to ping each other for verification. The following phenomena may occur: 1. PC-1 and PC-2 intercommunication 2. after disconnecting the link, there is a small amount of packet loss after the PC-1 and PC-2 intercommunication 3. PC-1 and PC-2 intercommunication 4. after the link is disconnected, there is a small amount of packet loss, the PC-1 and PC-2 intercommunication 5. PC-1 and PC-2 intercommunication 6. after the link is disconnected, the PC-1 and PC-2 are still interconnected without packet loss