INE WB Vol1 - 1.5 802.1q Native VLAN

This is happening if you have native VLAN mismatch, and receive a BPDU where the PVID and dot1q-field doesn't match

*Mar 1 01:32:07.467: %SPANTREE-2-RECV_PVID_ERR: Received BPDU with inconsistent peer vlan id 1 on FastEthernet0/20 VLAN146.
*Mar 1 01:32:07.467: %SPANTREE-2-BLOCK_PVID_PEER: Blocking FastEthernet0/20 on VLAN0001. Inconsistent peer vlan.
*Mar 1 01:32:07.467: %SPANTREE-2-BLOCK_PVID_LOCAL: Blocking FastEthernet0/20 on VLAN0146. Inconsistent local vlan.
*Mar 1 01:32:07.471: %SPANTREE-2-RECV_PVID_ERR: Received BPDU with inconsistent peer vlan id 1 on FastEthernet

Cisco statement ->
Port VLAN ID (PVID) inconsistencyA per−VLAN spanning tree (PVST+) Bridge Protocol Data
Unit (BPDU) is received on a different VLAN than it was originated: (Port VLAN ID Mismatch
or *PVID_Inc).


Rack1SW1#show spanning-tree vlan 1

VLAN0001
Spanning tree enabled protocol ieee
Root ID Priority 32769
Address 000b.5f70.0580
This bridge is the root
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Bridge ID Priority 32769 (priority 32768 sys-id-ext 1)
Address 000b.5f70.0580
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300

Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Fa0/1 Desg FWD 19 128.1 P2p
Fa0/5 Desg FWD 19 128.5 P2p
Fa0/13 Desg BKN*19 128.13 P2p *PVID_Inc
Fa0/14 Desg BKN*19 128.14 P2p *PVID_Inc
Fa0/15 Desg BKN*19 128.15 P2p *PVID_Inc
Fa0/16 Desg BKN*19 128.16 P2p *PVID_Inc
Fa0/17 Desg BKN*19 128.17 P2p *PVID_Inc
Fa0/18 Desg BKN*19 128.18 P2p *PVID_Inc
Fa0/19 Desg BKN*19 128.19 P2p *PVID_Inc
Fa0/20 Desg BKN*19 128.20 P2p *PVID_Inc
Fa0/21 Desg BKN*19 128.21 P2p *PVID_Inc

Rack1SW1#