1. Networking topology: 2. Configuration points: 1)Enable the spanning tree function 2)Create different instances 3)Configure the priority for the instance 3. Configuration procedure: Note: Before configuration, you are advised to run the Ruijie#show interface status command to check the interface name. The common interface names are FastEthernet (Gigabit), GigabitEthernet(Gigabit), and TenGigabitEthernet(Gigabit). The following configurations use Gigabit interfaces as an example. Core switch A configuration: Ruijie>enable //Enter privileged mode Ruijie#configure terminal //Enter global configuration mode Ruijie(config)#vlan 10 //create vlan 10, 20, 30 and 40 Ruijie(config-vlan)#vlan 20 Ruijie(config-vlan)#vlan 30 Ruijie(config-vlan)#vlan 40 Ruijie(config-vlan)#exit Ruijie(config)#spanning-tree //enable spanning tree, default mode is mst Ruijie(config)#spanning-tree mst configuration //configure mst Ruijie(config-mst)# instance 1 vlan 10, 20 //vlan 10 and 20 use instance (instance) 1 Ruijie(config-mst)# instance 2 vlan 30, 40 //vlan 30 and 40 use instance (instance) 2 Ruijie(config-mst)#spanning-tree mst 1 priority 4096 //instance (instance) 1 has a priority of 4096, the smaller the priority the higher the priority, the default priority is 32768 Ruijie(config-mst)#exit Ruijie(config)#interface FastEthernet 0/1 Ruijie(config-if-FastEthernet 0/1)#switch mode trunk Ruijie(config)#interface FastEthernet 0/2 Ruijie(config-if-FastEthernet 0/2)#switch mode trunk Core switch B configuration: Ruijie>enable //enter privileged mode Ruijie#configure terminal //Enter global configuration mode Ruijie(config)#vlan 10 //create vlan 10, 20, 30 and 40 Ruijie(config-vlan)#vlan 20 Ruijie(config-vlan)#vlan 30 Ruijie(config-vlan)#vlan 40 Ruijie(config-vlan)#exit Ruijie(config)#spanning-tree Ruijie(config)#spanning-tree mst configuration Ruijie(config-mst)# instance 1 vlan 10, 20 Ruijie(config-mst)# instance 2 vlan 30, 40 Ruijie(config-mst)# spanning-tree mst 2 priority 4096 Ruijie(configmst)#exit Ruijie(config)#interface FastEthernet 0/1 Ruijie(config-if-FastEthernet 0/1)#switch mode trunk //configure the first 100-gigabit interface of the switch as trunk Ruijie(config)#interface FastEthernet 0/2 Ruijie(config-if-FastEthernet 0/2)#switch mode trunk //Configure the second 100-gigabit interface of the switch as trunk Accessing the switch configuration: Ruijie>enable Ruijie#configure terminal Ruijie(config)#vlan 10 //create vlan 10, 20, 30 and 40 Ruijie(config-vlan)#vlan 20 Ruijie(config-vlan)#vlan 30 Ruijie(config-vlan)#vlan 40 Ruijie(config-vlan)#exit Ruijie(config)#spanning-tree Ruijie(config)#spanning-tree mst configuration Ruijie(config-mst)# instance 1 vlan 10, 20 Ruijie(config-mst)# instance 2 vlan 30, 40 Ruijie(config-mst)#exit Ruijie(config)#interface FastEthernet 0/1 Ruijie(config-if-FastEthernet 0/1)#switch mode trunk Ruijie(config)#interface FastEthernet 0/2 Ruijie(config-if-FastEthernet 0/2)#switch mode trunk Save the configuration Ruijie(config)#end Ruijie#write //Confirm the correct configuration and save the configuration 4. Configuration verification: 1)Ruijie#show spanning-tree summary Spanning tree enabled protocol mstp MST 0 vlans map : 1-9, 11-19, 21-29, 31-39, 41-4094 Root ID Priority 32768 Address 001a.a976.9d0a this bridge is root Hello Time 2 sec Forward Delay 15 sec Max Age 20 sec Bridge ID Priority 32768 Address 001a.a979.bc44 Hello Time 2 sec Forward Delay 15 sec Max Age 20 sec Interface Role Sts Cost Prio Type OperEdge ---------------- ---- --- ---------- -------- ----- --------------- Fa0/24 Root FWD 200000 128 P2p False Fa0/10 Altn BLK 200000 128 P2p False MST 1 vlans map : 10, 20 Region Root Priority 4096 Address 001a.a979.bc44 This bridge is region root Bridge ID Priority 4096 Address 001a.a979.bc44 Interface Role Sts Cost Prio Type OperEdge --------------- ---- --- ---------- -------- ----- --------------- Fa0/24 Desg FWD 200000 128 P2p False Fa0/10 Desg FWD 200000 128 P2p False MST 2 vlans map : 30, 40 Region Root Priority 4096 Address 001a.a979.b880 This bridge is region root Bridge ID Priority 32768 Address 001a.a979.bc44 Interface Role Sts Cost Prio Type OperEdge ---------------- ---- --- ---------- -------- ----- --------------- Fa0/24 Altn BLK 200000 128 P2p False Fa0/10 Root FWD 200000 128 P2p False 2)Ruijie#show spanning-tree mst 1 MST 1 vlans mapped : 10, 20 BridgeAddr : 001a.a979.bc44 Priority: 4096 TimeSinceTopologyChange : 0d:0h:0m:56s TopologyChanges : 9 DesignatedRoot : 1001.001a.a979.bc44 RootCost : 0 RootPort : 0 |
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