[c-nsp] Solution to %SPANTREE-2-RECV_PVID_ERR, except disable spanning tree?

[Joe Freeman]

The provider doesn't have to support it. In fact, from what the OP said, it
sounds like the provider has enabled control protocol tunneling across his
metro-e cloud. It also sounds like they are using a solution that requires
some form of cross-connect config in the cloud and have cross connected one
vlan to another, which is probably the root cause of this.

If the provider had cross-connected the same vlan on each C-UNI port, the OP
would probably not be seeing this issue.

Joe

On Wed, Jun 4, 2008 at 8:49 AM, Fred Reimer <freimer at ctiusa.com> wrote:

> The provider may not support PVST+ or Rapid PVST+.
>
> Fred Reimer, CISSP, CCNP, CQS-VPN, CQS-ISS
> Senior Network Engineer
> Coleman Technologies, Inc.
> 954-298-1697
>
>
> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net
> [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of
> Benjamin.Conconi at nok.ch
> Sent: Wednesday, June 04, 2008 9:38 AM
> To: cisco-nsp at puck.nether.net
> Subject: Re: [c-nsp] Solution to %SPANTREE-2-RECV_PVID_ERR,except
> disable spanning tree?
>
> We had a similar problem a time ago. We did some tests with a cisco es20
> linecard and eompls services. This card has a feature called
> vlan-translation were you can translate one vlan to a other. So we had a
> setup like this
>
>
> |-----|            |-------|            |-----|
> |2960 |--Vlan 2412-|Eompls |--Vlan 2413-|2960 |
> |-----|            |-------|            |-----|
>
> The problem is, that the PVSTP couples the vlan id with the bridge
> priority. Means if you let your bridge priority by default, the bridge
> priority of vlan 2412 is 32768 + 2412 = 35180. Hence the bridge priority
> of vlan 2413 is 35181. You can verify this with the command sh
> spanning-tree.
>
> Both, the bridge priority and the vlan id are integrated in the bpdu of
> the pvstp algorithm. If the left-hand switch sends a bpdu to the eompls
> core, the vlan id 2412 will be translated to 2413, but the bridge
> priority remains. Because the bridge priority and the vlan id are
> coupled by a simple addition, the right-hand switch (2960) detects, that
> something changed the vlan id. The Switch will then block the vlan and
> it apperas with the message you got:
>
> >> %SPANTREE-2-BLOCK_PVID_LOCAL: Blocking GigabitEthernet1/0/25 on
> >> VLAN2413. Inconsistent local vlan
>
> So, I would mean it is the fault of your service provider rather than
> yours.
>
> Regards,
> Benjamin Conconi
>
>
>
> On Mon, Jun 02, 2008 at 09:34:10PM -0600, Clinton Work wrote:
> >
> > I think that you need to speak with your service provider.  Based upon
>
> > the error message it looks like vlan 2412 at site #1 is connected to
> > vlan 2413 at site #2. There was a post six to 12 months ago on the
> same
> > topic and it was a service provider issue.
>
> I don't think the provider has got a bad configuration, partly
> because we have spoken with them about this several times and
> partly because of what I didn't include below, that we have the
> same problem for every vlan they gave us (30 in all, 6 each to
> 5 locations). As long as we only use one vlan to each location,
> everything works. When we add another vlan to one of the locations,
> all 6 vlans to that location goes into blocking mode because of the
> errors below. It could possibly be a systematic error somewhere.
>
> > STP to L2 FTTx gear:
> > http://puck.nether.net/pipermail/cisco-nsp/2008-January/046310.html
>
> Great thread on the subject. I hadn't seen that, I will read it and
> check for ideas.
>
> Many thanks!
>
> Peter Olsson
>
> >
> > Clinton.
> >
> > Peter Olsson wrote:
> >> Two offices have a cisco 3750 each. They connect via a
> >> bridged fastethernet service, on non-cisco equipment,
> >> which offers six vlans on the line. When the 3750 only
> >> allow one vlan on the switch port toward the line,
> >> everything works fine.
> >>
> >> When we try to add another allowed vlan, we get this error
> >> and both vlans block:
> >> %SPANTREE-2-RECV_PVID_ERR: Received BPDU with inconsistent peer
> >> vlan id 2412 on GigabitEthernet1/0/25 VLAN2413.
> >> %SPANTREE-2-BLOCK_PVID_LOCAL: Blocking GigabitEthernet1/0/25 on
> >> VLAN2413. Inconsistent local vlan.
> >> %SPANTREE-2-BLOCK_PVID_PEER: Blocking GigabitEthernet1/0/25 on
> >> VLAN2412. Inconsistent peer vlan.
> >>
> >>
> >>
> >>
> >
> >
> > --
> > =======================================================
> > Clinton Work
> > Airdrie, AB
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