Dell Force10 Z9000 Configuration Manual page 884

Note: Note that unless the shutdown-on-violation option is enabled, spanning-tree only drops packets
after a BPDU violation; the physical interface remains up, as shown below.
FTOS(conf-if-gi-0/7)#do show spanning-tree rstp brief
Executing IEEE compatible Spanning Tree Protocol
Root ID
Root Bridge hello time 2, max age 20, forward delay 15
Bridge ID
Configured hello time 2, max age 20, forward delay 15
Interface
Name
---------- -------- ---- ------- --- ------- -------------------- --------
Gi 0/6
Gi 0/7
Interface
Name
---------- ------ -------- ---- ------- --- ------- --------- ----
Gi 0/6
Gi 0/7
FTOS(conf-if-gi-0/7)#do show ip int br gi 0/7
Interface
GigabitEthernet 0/7
FTOS Behavior: Regarding bpduguard shutdown-on-violation behavior:
1 If the interface to be shutdown is a port channel then all the member ports are disabled in the hardware.
2 When a physical port is added to a port channel already in error disable state, the new member port will
3 When a physical port is removed from a port channel in error disable state, the error disabled state is
4 The reset linecard command does not clear the error disabled state of the port or the hardware disabled
| Spanning Tree Protocol (STP)
884
Priority 32768, Address 0001.e805.fb07
Priority 32768, Address 0001.e85d.0e90
PortID Prio Cost
128.263 128 20000
128.264 128 20000
Role PortID Prio Cost
Root 128.263 128
ErrDis 128.264 128
IP-Address
unassigned
also be disabled in the hardware.
cleared on this physical port (the physical port will be enabled in the hardware).
state. The interface continues to be disables in the hardware.
The error disabled state can be cleared with any of the following methods:
•Perform an shutdown command on the interface.
•Disable the shutdown-on-violation command on the interface ( no spanning-tree stp-id portfast
[bpduguard | [shutdown-on-violation]] ).
•Disable spanning tree on the interface (no spanning-tree in INTERFACE mode).
•Disabling global spanning tree (no spanning-tree in CONFIGURATION mode).
Designated
Sts Cost Bridge ID
FWD 20000 32768 0001.e805.fb07 128.653
EDS 20000 32768 0001.e85d.0e90 128.264
Sts Cost Link-type Edge
20000 FWD 20000 P2P
20000 EDS 20000 P2P
OK Method Status
YES Manual up
PortID
No
No
Protocol
up