Example (Brief)

Usage Information

Topology change flag set, detected flag set

Number of topology changes 1 last change occurred 0:00:05 ago from TenGigabitEthernet 1/3

Timers:hold 1, topology change 35

hello 2, max age 20, forward_delay 15 Times:hello 1, topology change 1, notification 0, aging 2

Port 26 (TenGigabitEthernet 1/1) is Forwarding

Port path cost 4, Port priority 8, Port Identifier 8.26 Designated root has priority 32768, address 0001.e800.0a56 Designated bridge has priority 32768, address 0001.e800.0a56 Designated port id is 8.26, designated path cost 0 Timers: message age 0, forward_delay 0, hold 0

Number of transitions to forwarding state 1 BPDU: sent:18, received 0

The port is not in the portfast mode

Port 27 (TenGigabitEthernet 1/2) is Forwarding

Port path cost 4, Port priority 8, Port Identifier 8.27 Designated root has priority 32768, address 0001.e800.0a56 Designated bridge has priority 32768, address 0001.e800.0a56 Designated port id is 8.27, designated path cost 0 Timers: message age 0, forward_delay 0, hold 0

Number of transitions to forwarding state 1 BPDU: sent:18, received 0

The port is not in the portfast mode

Port 28 (TenGigabitEthernet 1/3) is Forwarding

Port path cost 4, Port priority 8, Port Identifier 8.28 Designated root has priority 32768, address 0001.e800.0a56 Designated bridge has priority 32768, address 0001.e800.0a56 Designated port id is 8.28, designated path cost 0 Timers: message age 0, forward_delay 0, hold 0

Number of transitions to forwarding state 1 BPDU: sent:31, received 0

The port is not in the portfast mode

Dell#

Dell#show span 0 brief

Executing IEEE compatible Spanning Tree Protocol Root ID Priority 32768

Address 0001.e800.0a56

Root Bridge hello time 2, max age 20, forward delay 15 Bridge ID Priority 32768,

Address 0001.e800.0a56

Configured hello time 2, max

age 20, forward delay 15

Interface

 

 

 

Designated

PortID

Name

PortID Prio Cost Sts Cost

Bridge ID

Te--------------1/1

8.26

8

------ ---- ---- --- ----- ------------------

4

FWD 0

32768

0001.e800.0a56

8.26

Te 1/2

8.27

8

4

FWD 0

32768

0001.e800.0a56

8.27

Te 1/3

8.28

8

4

FWD 0

32768

0001.e800.0a56

8.28

Dell#

 

 

 

 

 

 

 

The following describes the show spanning-tree 0 guard command shown in the example.

Field

Description

Interface Name

STP interface.

1562

Spanning Tree Protocol (STP)

Page 1562
Image 1562
Dell 9.7(0.0) manual Example Brief Usage Information, 32768 0001.e800.0a56 Te 1/2, 32768 0001.e800.0a56 Te 1/3