RPVST+ event log messages

Event

Log message

STP enabled/disabled on a VLAN

Spanning tree Protocol enabled/disabled on vlan <vlan-id>

Switch does not receive BPDUs from peer on a particular VLAN and port

VLAN <vlan-id> starved for a BPDU on port <port number> from <bridge name>

Switch received BPDU with inconsistent VLAN

Blocking port-name on vlan <vlan-id>.

Inconsistency is restored

Unblocking port-name on vlan <vlan-id>Port consistency restored.

Root port is changed on a VLAN

VLAN <vlan-id>root changed from <bridgepriorty:mac> to <bridge priority:mac>

Switch received a BPDU with invalid TLV

Received SSTP BPDU with bad TLV on <port-number> <vlan-id>

The number of vlan-port instances exceeds the recommended limit

The number of vlan-port instances exceeded the recommended limit of <num>

RADIUS subsystem tries to dynamically change port VLAN assignments when mode is RPVST

RADIUS unable to assign port to VLAN <vlan-id> because spanning-tree is running in RPVST+ mode

LLDP subsystem tries to dynamically change port VLAN assignments when mode is RPVST

LLDP unable to assign port <port-number> to VLAN <vlan-id> because spanning-tree is running in RPVST+ mode

VPORT counts exceed 200

The number of vPorts on slot <slot-number> exceeds the recommended limit of <vport-count>. PVST BPDUs may be dropped.