<> [On Ranet Core-SW (via console)] : (Go to Desktop Tab > Terminal) Ranet-CoreSW>en Ranet-CoreSW#sh spanning-tree VLAN0001 Spanning tree enabled protocol ieee Root ID Priority 32769 Address 0002.4A0B.19DB Cost 4 Port 26(GigabitEthernet0/2) Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec Bridge ID Priority 32769 (priority 32768 sys-id-ext 1) Address 0090.216A.C001 Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec Aging Time 20 Interface Role Sts Cost Prio.Nbr Type ---------------- ---- --- --------- -------- -------------------------------- Gi0/1 Desg FWD 4 128.25 P2p Gi0/2 Root FWD 4 128.26 P2p Ranet-CoreSW#conf t Enter configuration commands, one per line. End with CNTL/Z. Ranet-CoreSW(config)#spanning-tree vlan 1 root primary Ranet-CoreSW(config)# Ranet-CoreSW# %SYS-5-CONFIG_I: Configured from console by console Ranet-CoreSW#sh spanning-tree VLAN0001 Spanning tree enabled protocol ieee Root ID Priority 24577 Address 0090.216A.C001 This bridge is the root Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec Bridge ID Priority 24577 (priority 24576 sys-id-ext 1) Address 0090.216A.C001 Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec Aging Time 20 Interface Role Sts Cost Prio.Nbr Type ---------------- ---- --- --------- -------- -------------------------------- Gi0/1 Desg FWD 4 128.25 P2p Gi0/2 Altn BLK 4 128.26 P2p Ranet-CoreSW#copy run start Destination filename [startup-config]? Building configuration... [OK] Ranet-CoreSW# [On Ranet SW3 (via console)] : (Go to Desktop Tab > Terminal) Ranet-SW3>en Ranet-SW3#sh spanning-tree VLAN0001 Spanning tree enabled protocol ieee Root ID Priority 24577 Address 0090.216A.C001 Cost 4 Port 25(GigabitEthernet1/1) Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec Bridge ID Priority 32769 (priority 32768 sys-id-ext 1) Address 0002.4A0B.19DB Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec Aging Time 20 Interface Role Sts Cost Prio.Nbr Type ---------------- ---- --- --------- -------- -------------------------------- Gi1/1 Root FWD 4 128.25 P2p Fa0/1 Desg FWD 19 128.1 P2p Ranet-SW3#conf t Enter configuration commands, one per line. End with CNTL/Z. Ranet-SW3(config)#spanning-tree vlan 1 priority ? <0-61440> bridge priority in increments of 4096 Ranet-SW3(config)#spanning-tree vlan 1 priority 61440 Ranet-SW3(config)# Ranet-SW3# %SYS-5-CONFIG_I: Configured from console by console Ranet-SW3#sh spanning-tree VLAN0001 Spanning tree enabled protocol ieee Root ID Priority 24577 Address 0090.216A.C001 Cost 4 Port 25(GigabitEthernet1/1) Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec Bridge ID Priority 61441 (priority 61440 sys-id-ext 1) Address 0002.4A0B.19DB Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec Aging Time 20 Interface Role Sts Cost Prio.Nbr Type ---------------- ---- --- --------- -------- -------------------------------- Gi1/1 Root FWD 4 128.25 P2p Fa0/1 Desg FWD 19 128.1 P2p Ranet-SW3#copy run start Destination filename [startup-config]? Building configuration... [OK] Ranet-SW3# (If you wait for a min, you will see the blocked port on Ranet-SW2 changed to be Fa0/2 due to the change in sender bridge ID from Ranet-SW3.)