[c-nsp] SPANTREE-SP-2-RECV_BAD_TLV

[Clinton Work]

Can you clarify the type of Nortel switch the service provider is 
using?  Nortel OM3500 / 5200 / 6500 are transport nodes that support 
point to point Ethernet services and can pass clear 802.1q frames with 
no problems. 

It sounds like the Nortel switches are sending 802.1d BPDUs on the 
individual vlans, but its not clear why its only causing a problem every 
couple of hours.  If the Nortel switch believes its the root then you 
should be seeing a 802.1d BPDU every 2 seconds (given standard timers). 

Clinton. 

Jean-Christophe Varaillon wrote:
> I will have to check this, but indeed, from Cisco:
> "PVST+ is an enhancement to the 802.1Q specification and is not supported on
> non-Cisco devices."
>
> So I suppose that the Nortel switch sends those untagged BPDU, which are not
> in the PVST+ format.
>  
> Christophe
>
>   


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Clinton Work
Airdrie, AB