Thank you Marko for the explanation.

Regards,

From: Marko Milivojevic [mailto:[email protected]]
Sent: Friday, March 15, 2013 11:54 AM
To: Jaffar Nassiry
Cc: [email protected]
Subject: Re: [OSL | CCIE_Wireless] PVID-ERR

Yes :-).

This error may happen when you have two switches interconnected with 802.1q 
trunks, and you are running PVST+ and a wrong VLAN is detected in incoming 
BPDUs.

The method switches use to detect VLAN inconsistency is by using an extension 
to the Bridge Priority field in BPDU called Extended System ID (sys-id-ext). If 
APs don't support sys-id-ext, then the priority they set in BPDUs will be 
incorrect from switches' perspective.

There are several generic workarounds:

1. Make sure native VLANs match on two sides
2. Run MST
3. Turn off STP on your APs (could lead to bad things, with bridging involved)

Hope this helps.

--
Marko Milivojevic - CCIE #18427 (SP R&S)
Senior CCIE Instructor / Managing Partner - IPexpert


On Mon, Mar 11, 2013 at 7:49 AM, Jaffar Nassiry 
<[email protected]<mailto:[email protected]>> wrote:
Hi All,

I am have two 3502s setup in a bridge(RAP)/non-bridge(MAP), both APs connect to 
switches that are configured as trunks. I have enabled Ethernet bridging on  
both AP as well as enable VLAN transparent bridging.  I am running into a 
spanningtree issue on the switch side of both APs

%SPANTREE-2-RECV-PVID-ERR: Received PBDU with inconsistent peer vlan id 10 on 
Fas...

Then goes through the STP process of blocking, but cylces back around and goes 
to learning...and so forth.  Seems like an infinite loop.  The correct VLANs 
are configured on both side(AP and Switch)

Has anyone run into this issue before?

Jaffar Nassiry
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