Adding An Interface To The Spanning Tree Group; Removing An Interface From The Spanning Tree Group - Dell Force10 C150 Configuration Manual

Confirm that a port is participating in Spanning Tree using the
EXEC privilege mode.
Figure 52-6. show spanning-tree brief Command Example
FTOS#show spanning-tree 0 brief
Executing IEEE compatible Spanning Tree Protocol
Interface
Name
-------------- ------ ---- ---- --- -----
Gi 1/1
Gi 1/2
Gi 1/3
Gi 1/4
FTOS#

Adding an Interface to the Spanning Tree Group

To add a Layer 2 interface to the Spanning Tree topology:
Task
Enable Spanning Tree on a Layer 2 interface.

Removing an Interface from the Spanning Tree Group

To remove a Layer 2 interface from the Spanning Tree topology:
Task
Disable Spanning Tree on a Layer 2 interface.
In FTOS versions prior to 7.6.1.0, the command
however, BPDUs are still forwarded to the RPM, where they are dropped. Beginning in FTOS version 7.6.1.0,
the command
the line card instead of at the RPM, which frees processing resources. This behavior is called Layer 2 BPDU
filtering and is available for STP, RSTP, PVST+, and MSTP.
1054 | Spanning Tree Protocol
Root ID Priority 32768, Address 0001.e80d.2462
We are the root of the spanning tree
Root Bridge hello time 2, max age 20, forward delay 15
Bridge ID Priority 32768, Address 0001.e80d.2462
Configured hello time 2, max age 20, forward delay 15
PortID Prio Cost Sts Cost
8.496 8 4 DIS
8.497 8 4 DIS
8.513 8 4 FWD
8.514 8 4 FWD
no spanning tree
disables Spanning Tree on the interface, and incoming BPDUs are dropped at
show spanning-tree 0 brief
Designated
Bridge ID
-----------------
0 32768 0001.e80d.2462
0 32768 0001.e80d.2462
0 32768 0001.e80d.2462
0 32768 0001.e80d.2462
Command Syntax
spanning-tree 0
Command Syntax
no spanning-tree 0
no spanning tree
disables Spanning Tree on the interface,
command from
PortID
------
8.496
8.497
8.513
8.514
Command Mode
INTERFACE
Command Mode
INTERFACE