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FTOS Configuration Guide for the C-Series - Force10 Networks

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oot<br />

R1 R2<br />

1/1 1/2<br />

3/1 3/2<br />

R3<br />

1/3<br />

1/4<br />

3/3<br />

3/4<br />

Forwarding<br />

Blocking<br />

2/1<br />

2/2 2/3 2/4<br />

Figure 270 Spanning Tree Enabled Globally<br />

View <strong>the</strong> Spanning Tree configuration and <strong>the</strong> interfaces that are participating in STP using <strong>the</strong> show<br />

spanning-tree 0 command from EXEC privilege mode. If a physical interface is part of a port channel,<br />

only <strong>the</strong> port channel is listed in <strong>the</strong> command output.<br />

Figure 271 show spanning-tree 0 Command Example<br />

Port 290 (GigabitE<strong>the</strong>rnet 2/4) is Blocking<br />

Port path cost 4, Port priority 8, Port Identifier 8.290<br />

Designated root has priority 32768, address 0001.e80d.2462<br />

Designated bridge has priority 32768, address 0001.e80d.2462<br />

Designated port id is 8.497, designated path cost 0<br />

Timers: message age 1, <strong>for</strong>ward delay 0, hold 0<br />

Number of transitions to <strong>for</strong>warding state 1<br />

BPDU: sent 21, received 486<br />

The port is not in <strong>the</strong> portfast mode<br />

R2#show spanning-tree 0<br />

Executing IEEE compatible Spanning Tree Protocol<br />

Bridge Identifier has priority 32768, address 0001.e826.ddb7<br />

Configured hello time 2, max age 20, <strong>for</strong>ward delay 15<br />

Current root has priority 32768, address 0001.e80d.2462<br />

Root Port is 289 (GigabitE<strong>the</strong>rnet 2/1), cost of root path is 4<br />

Topology change flag not set, detected flag not set<br />

Number of topology changes 3 last change occurred 0:16:11 ago<br />

from GigabitE<strong>the</strong>rnet 2/3<br />

Timers: hold 1, topology change 35<br />

hello 2, max age 20, <strong>for</strong>ward delay 15<br />

Times: hello 0, topology change 0, notification 0, aging Normal<br />

Port 289 (GigabitE<strong>the</strong>rnet 2/1) is Forwarding<br />

Port path cost 4, Port priority 8, Port Identifier 8.289<br />

Designated root has priority 32768, address 0001.e80d.2462<br />

Designated bridge has priority 32768, address 0001.e80d.2462<br />

Designated port id is 8.496, designated path cost 0<br />

Timers: message age 1, <strong>for</strong>ward delay 0, hold 0<br />

Number of transitions to <strong>for</strong>warding state 1<br />

BPDU: sent 21, received 486<br />

The port is not in <strong>the</strong> portfast mode<br />

Port 290 (GigabitE<strong>the</strong>rnet 2/2) is Blocking<br />

Port path cost 4, Port priority 8, Port Identifier 8.290<br />

--More--<br />

<strong>FTOS</strong> <strong>Configuration</strong> <strong>Guide</strong>, version 7.7.1.0 389

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