Re:

The other end has a trunk with a native VLAN of 1.

If you check your spanning tree status whilst blocked the prt should show BKN.

David

Sent from my iPhone
Please excuse any mistakes and brevity.

On 12 Mar 2013, at 04:30, ramesh Kumar <rameshkumar123321_at_yahoo.com> wrote:

> Folks,
>
> We are seeing this log in our switch. I am suspecting someone has
> connected a switch with native vlan mismatch to this port.
>
> 019109: Mar 12
> 03:26:55.293 UTC: %DTP-5-TRUNKPORTON: Port Gi3/36 has become dot1q trunk
> 019110: Mar 12 03:26:55.573 UTC: %SPANTREE-2-RECV_PVID_ERR: Received BPDU with
> inconsistent peer vlan id 1 on GigabitEthernet3/36 VLAN39.
> 019111: Mar 12
> 03:26:55.573 UTC: %SPANTREE-2-BLOCK_PVID_LOCAL: Blocking GigabitEthernet3/36
> on MST0. Inconsistent local vlan.
> 019112: Mar 12 03:26:55.793 UTC:
> %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet3/36, changed
> state to up
> 019113: Mar 12 03:27:09.793 UTC: %SPANTREE-2-UNBLOCK_CONSIST_PORT:
> Unblocking GigabitEthernet3/36 on MST0. Port consistency restored.
> 019114: Mar
> 12 03:27:11.612 UTC: %SPANTREE-2-RECV_PVID_ERR: Received BPDU with
> inconsistent peer vlan id 1 on GigabitEthernet3/36 VLAN39.
> 019115: Mar 12
> 03:27:11.612 UTC: %SPANTREE-2-BLOCK_PVID_LOCAL: Blocking GigabitEthernet3/36
> on MST0. Inconsistent local vlan.
>
> interface GigabitEthernet3/36
> switchport
> trunk native vlan 39
> switchport trunk allowed vlan 64
> switchport mode trunk
> logging event link-status
> logging event trunk-status
> spanning-tree guard
> root
> end
>
> Could it be possible that the other end has a non-cisco switch with
> a different native vlan configured?
>
>
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Received on Tue Mar 12 2013 - 07:45:57 ART