Dell Force10 C150 Configuration Manual page 1053

Figure 52-4. Spanning Tree Enabled Globally
R1
1/3
1/4
1/1 1/2
3/2
3/1
3/3
3/4
R3
View the Spanning Tree configuration and the interfaces that are participating in STP using the
spanning-tree 0
command from EXEC privilege mode. If a physical interface is part of a port channel, only
the port channel is listed in the command output.
Figure 52-5. show spanning-tree 0 Command Example
R2#show spanning-tree 0
Executing IEEE compatible Spanning Tree Protocol
Bridge Identifier has priority 32768, address 0001.e826.ddb7
Configured hello time 2, max age 20, forward delay 15
Current root has priority 32768, address 0001.e80d.2462
Root Port is 289 (GigabitEthernet 2/1), cost of root path is 4
Topology change flag not set, detected flag not set
Number of topology changes 3 last change occurred 0:16:11 ago
Timers: hold 1, topology change 35
Times:
Port 289 (GigabitEthernet 2/1) is Forwarding
Port path cost 4, Port priority 8, Port Identifier 8.289
Designated root has priority 32768, address 0001.e80d.2462
Designated bridge has priority 32768, address 0001.e80d.2462
Designated port id is 8.496, designated path cost 0
Timers: message age 1, forward delay 0, hold 0
Number of transitions to forwarding state 1
BPDU: sent 21, received 486
The port is not in the portfast mode
Port 290 (GigabitEthernet 2/2) is Blocking
Port path cost 4, Port priority 8, Port Identifier 8.290
--More--
root
2/1
Forwarding
2/2
Blocking
2/3
Port 290 (GigabitEthernet 2/4) is Blocking
Port path cost 4, Port priority 8, Port Identifier 8.290
Designated root has priority 32768, address 0001.e80d.2462
Designated bridge has priority 32768, address 0001.e80d.2462
Designated port id is 8.497, designated path cost 0
Timers: message age 1, forward delay 0, hold 0
Number of transitions to forwarding state 1
BPDU: sent 21, received 486
The port is not in the portfast mode
from GigabitEthernet 2/3
hello 2, max age 20, forward delay 15
hello 0, topology change 0, notification 0, aging Normal
R2
2/4
show
Spanning Tree Protocol | 1053