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

[Julio Arruda]

Jean-Christophe Varaillon wrote:
> Thanks for your so prompt answer.
> 
>> I may be wrong, but I believe SSTP is better known as per VLAN STP 
>> (PVST+).   The 6509 is probably complaining that its receiving a regular 
>> 802.1D BPU when its expecting a PVSTP+ BPDU on vlans 21 and 60.
> 
> Both 6509 are configured to use STP in PVST+ mode.
> 
>> I have to wonder why you are running PVST+ thru Nortel switches why may or
>> may not support it.
> 
> The carrier provider gives us ethernet connections through its Nortel
> switches. It seems that we cannot use that link in such a naïve way of
> thinking: Setting a trunk between the two 6509 through the two Nortel
> switches of the carrier provider...
> 
>> I know that later versions of software on the Nortel Passport 8600s can 
>> support PVST+
> 
> 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.

You may be able to take a look at Nortel website for the PP8600 (ERS 
8600), but as others mentioned, there are sofware releases that do 
support 'multiple stp instances' (I'm quite sure I saw one option to 
interoperate with cisco flavor, another to deal with 802.1s maybe ?)