Re: Need help in understanding STP logs

Hi,

I am seconding Mohammad on the topology, also what equipment and
configuration you have on the other end.
I suspect native vlan mismatch or MST configuration mismatch.

AD

On 12 March 2013 05:44, Mohammad Mousa <mohd-mousa_at_hotmail.com> wrote:

> Ramesh,
>
> What is your topology looks like? Where is your root switch? I saw you
> that you enable root guard feature on this port. What is the status of the
> port? Is it in the Inconsistent state? Use the command show spanning-tree
> for this interface g3/63 to give you more information.
>
> Please post more information so we can help you further.
>
> --
> Mohammad Mousa
> CCIE #36990
>
> > Date: Mon, 11 Mar 2013 21:32:16 -0700
> > From: rameshkumar123321_at_yahoo.com
> > Subject: Need help in understanding STP logs
> > To: ccielab_at_groupstudy.com
> >
> > Adding subject
> >
> > Ramesh.
> >
> >
> > ________________________________
> > From: ramesh Kumar
> > <rameshkumar123321_at_yahoo.com>
> > To: "ccielab_at_groupstudy.com"
> > <ccielab_at_groupstudy.com>
> > Sent: Tuesday, March 12, 2013 10:00 AM
> > Subject:
> > 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 - 09:49:46 ART