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STP log messages

The log messages in this section are for Spanning Tree Protocol (STP) issues.

Interface shut down because BPDUs detected

ID

8000

Type

Event log

Subtype

Spanning tree

Severity

Notice

Message

msg=\"BPDU Guard: BPDU detected on <interface_name>. Shutting down <interface_name>.\"

Meaning

Bridge protocol data units (BPDUs) were detected on the specified interface, which will be shut down.

BPDU guard resetting interface

ID

8001

Type

Event log

Subtype

Spanning tree

Severity

Notice

Message

msg=\"BPDU Guard: Resetting <interface_name>.\"

Meaning

BPDU guard detected BPDUs on the specified interface, which will be reset.

STP loop protection detected BPDU loss on port

ID

8100

Type

Event log

Subtype

Spanning tree

Severity

Notice

Message

msg=\"STP Loop Protection: BPDU loss detected on Port <port_name> (changed state to discarding)\"

Meaning

The STP loop-protection feature detected BPDU loss on the specified port.

STP loop protection detected BPDUs resumed on port

ID

8101

Type

Event log

Subtype

Spanning tree

Severity

Notice

Message

msg=\"STP Loop Protection: BPDUs resumed on Port <port_name>\"

Meaning

The STP loop-protection feature detected that BPDUs have resumed on the specified port.

STP root guard unblocked port

ID

8102

Type

Event log

Subtype

Spanning tree

Severity

Notice

Message

msg=\"STP Root Guard: Un-blocking Port <port_name> (STP instance <STP_instance_ID>)\"

Meaning

The STP root-guard feature unblocked the specified port.

STP root guard blocked role transition

ID

8103

Type

Event log

Subtype

Spanning tree

Severity

Notice

Message

msg=\"STP Root Guard: Blocking Role Transition on Port<port_name> (STP instance <STP_instance_ID>)\"

Meaning

The STP root-guard feature blocked a change in the role on the specified port.

STP root guard detected superior BPDUs received

ID

8150

Type

Event log

Subtype

Spanning tree

Severity

Notice

Message

msg=\"STP Root Guard: Superior BPDUs received on Port <port_name> (STP instance <STP_instance_ID>)\"

Meaning

The STP root-guard feature detected that the specified port received superior BPDUs.

STP root guard detected superior BPDUs stopped

ID

8151

Type

Event log

Subtype

Spanning tree

Severity

Notice

Message

msg=\"STP Root Guard: Superior BPDUs stopped on Port <port_name> (STP instance <STP_instance_ID>)\"

Meaning

The STP root-guard feature stopped the specified port from receiving superior BPDUs.

STP enabled on interface

ID

8250

Type

Event log

Subtype

Spanning tree

Severity

Notice

Message

msg=\"user <user_name> enabled STP on <FortiSwitch_serial_number> interface <interface_name>\"

Meaning

The specified user enabled STP on the specified switch interface.

STP disabled on interface

ID

8251

Type

Event log

Subtype

Spanning tree

Severity

Notice

Message

msg=\"user <user_name> disabled STP on <FortiSwitch_serial_number> interface <interface_name>\"

Meaning

The specified user enabled STP on the specified switch interface.

STP edge port enabled on interface

ID

8252

Type

Event log

Subtype

Spanning tree

Severity

Notice

Message

msg=\"user <user_name> enabled STP on <FortiSwitch_serial_number> interface <interface_name>\"

Meaning

The specified user enabled an STP edge port on the specified switch interface.

STP edge port disabled on interface

ID

8253

Type

Event log

Subtype

Spanning tree

Severity

Notice

Message

msg=\"user <user_name> enabled STP on <FortiSwitch_serial_number> interface <interface_name>\"

Meaning

The specified user disabled an STP edge port on the specified switch interface.

STP instance changed role or state

ID

8255

Type

Event log

Subtype

Spanning tree

Severity

Notice

Message

  • msg=\"<port_name> port <STP_instance_ID> instance <user_name> changed role from <old_role> to <new_role>\"
  • msg=\"<port_name> port <STP_instance_ID> instance <user_name> changed state from <old_state> to <new_state>\"

Meaning

The specified user changed the role or state of the STP instance.

Port changed state in RPVST+ domain

ID

8256

Type

Event log

Subtype

Spanning tree

Severity

Notice

Message

msg=\"STP RPVST: port id <port_name> state changed to <state>\"

Meaning

The specified port changed state in a per-VLAN RSTP (Rapid PVST+ or RPVST+) domain.

STP log messages

The log messages in this section are for Spanning Tree Protocol (STP) issues.

Interface shut down because BPDUs detected

ID

8000

Type

Event log

Subtype

Spanning tree

Severity

Notice

Message

msg=\"BPDU Guard: BPDU detected on <interface_name>. Shutting down <interface_name>.\"

Meaning

Bridge protocol data units (BPDUs) were detected on the specified interface, which will be shut down.

BPDU guard resetting interface

ID

8001

Type

Event log

Subtype

Spanning tree

Severity

Notice

Message

msg=\"BPDU Guard: Resetting <interface_name>.\"

Meaning

BPDU guard detected BPDUs on the specified interface, which will be reset.

STP loop protection detected BPDU loss on port

ID

8100

Type

Event log

Subtype

Spanning tree

Severity

Notice

Message

msg=\"STP Loop Protection: BPDU loss detected on Port <port_name> (changed state to discarding)\"

Meaning

The STP loop-protection feature detected BPDU loss on the specified port.

STP loop protection detected BPDUs resumed on port

ID

8101

Type

Event log

Subtype

Spanning tree

Severity

Notice

Message

msg=\"STP Loop Protection: BPDUs resumed on Port <port_name>\"

Meaning

The STP loop-protection feature detected that BPDUs have resumed on the specified port.

STP root guard unblocked port

ID

8102

Type

Event log

Subtype

Spanning tree

Severity

Notice

Message

msg=\"STP Root Guard: Un-blocking Port <port_name> (STP instance <STP_instance_ID>)\"

Meaning

The STP root-guard feature unblocked the specified port.

STP root guard blocked role transition

ID

8103

Type

Event log

Subtype

Spanning tree

Severity

Notice

Message

msg=\"STP Root Guard: Blocking Role Transition on Port<port_name> (STP instance <STP_instance_ID>)\"

Meaning

The STP root-guard feature blocked a change in the role on the specified port.

STP root guard detected superior BPDUs received

ID

8150

Type

Event log

Subtype

Spanning tree

Severity

Notice

Message

msg=\"STP Root Guard: Superior BPDUs received on Port <port_name> (STP instance <STP_instance_ID>)\"

Meaning

The STP root-guard feature detected that the specified port received superior BPDUs.

STP root guard detected superior BPDUs stopped

ID

8151

Type

Event log

Subtype

Spanning tree

Severity

Notice

Message

msg=\"STP Root Guard: Superior BPDUs stopped on Port <port_name> (STP instance <STP_instance_ID>)\"

Meaning

The STP root-guard feature stopped the specified port from receiving superior BPDUs.

STP enabled on interface

ID

8250

Type

Event log

Subtype

Spanning tree

Severity

Notice

Message

msg=\"user <user_name> enabled STP on <FortiSwitch_serial_number> interface <interface_name>\"

Meaning

The specified user enabled STP on the specified switch interface.

STP disabled on interface

ID

8251

Type

Event log

Subtype

Spanning tree

Severity

Notice

Message

msg=\"user <user_name> disabled STP on <FortiSwitch_serial_number> interface <interface_name>\"

Meaning

The specified user enabled STP on the specified switch interface.

STP edge port enabled on interface

ID

8252

Type

Event log

Subtype

Spanning tree

Severity

Notice

Message

msg=\"user <user_name> enabled STP on <FortiSwitch_serial_number> interface <interface_name>\"

Meaning

The specified user enabled an STP edge port on the specified switch interface.

STP edge port disabled on interface

ID

8253

Type

Event log

Subtype

Spanning tree

Severity

Notice

Message

msg=\"user <user_name> enabled STP on <FortiSwitch_serial_number> interface <interface_name>\"

Meaning

The specified user disabled an STP edge port on the specified switch interface.

STP instance changed role or state

ID

8255

Type

Event log

Subtype

Spanning tree

Severity

Notice

Message

  • msg=\"<port_name> port <STP_instance_ID> instance <user_name> changed role from <old_role> to <new_role>\"
  • msg=\"<port_name> port <STP_instance_ID> instance <user_name> changed state from <old_state> to <new_state>\"

Meaning

The specified user changed the role or state of the STP instance.

Port changed state in RPVST+ domain

ID

8256

Type

Event log

Subtype

Spanning tree

Severity

Notice

Message

msg=\"STP RPVST: port id <port_name> state changed to <state>\"

Meaning

The specified port changed state in a per-VLAN RSTP (Rapid PVST+ or RPVST+) domain.