[c-nsp] BAD TLVs

[Sorin CONSTANTINESCU]

Hi,

Your switch is receiving a BPDU which doesn't have the VLAN ID tag on
a trunk port. I guess yuou shouldn't worry too much as long as you
won't have a l2 loop.

=== cut here ===
%SPANTREE-2-RECV_BAD_TLV : Received SSTP BPDU with bad TLV on [chars] [chars]. 
Explanation   The specified interface has received a SSTP BPDU that
was missing the VLAN ID tag. The BPDU is discarded.

Recommended Action   If this message recurs, copy the error message
exactly as it appears on the console or in the system log, contact
your Cisco technical support representative, and provide the
representative with the gathered information.
=== and here ===


On Thu, 3 Feb 2005 10:35:53 -0500, Mario Antonio <dino at webjogger.net> wrote:
> Dear List,
> 
> I am getting the following entry in one of my switches' logs:
> It is  a cisco WS-C2950-24 --Version 12.1(13)EA1c--
> 
> Feb  1 01:32:21: %SPANTREE-2-RECV_BAD_TLV: Received SSTP BPDU with bad TLV
> on FastEthernet0/9 VLAN127.
> Feb  1 02:45:26: %SPANTREE-2-RECV_BAD_TLV: Received SSTP BPDU with bad TLV
> on FastEthernet0/9 VLAN127.
> Feb  1 03:59:07: %SPANTREE-2-RECV_BAD_TLV: Received SSTP BPDU with bad TLV
> on FastEthernet0/9 VLAN127.
> Feb  1 04:43:55: %SPANTREE-2-RECV_BAD_TLV: Received SSTP BPDU with bad TLV
> on FastEthernet0/9 VLAN127.
> Feb  1 07:18:17: %SPANTREE-2-RECV_BAD_TLV: Received SSTP BPDU with bad TLV
> on FastEthernet0/9 VLAN127.
> 
> The configuration of port 9 is:
> !
> interface FastEthernet0/9
> description AU -- 2.4 GHz (cell)
> switchport trunk native vlan 1000
> switchport trunk allowed vlan 1,110,111,116,118,121-123,125,127,131,132,136
> switchport trunk allowed vlan add 137,140,801,900,1002-1005
> switchport mode trunk
> no ip address
> speed 10
> no cdp enable
> !
> 
> and VTP configs:
> =============
> vtp mode transparent
> !
> spanning-tree mode pvst
> no spanning-tree optimize bpdu transmission
> spanning-tree extend system-id
> 
> an Alvarion radio (in trunk mode) is connected to this port.
> The customer with vlan 127 has another Alvarion radio which tags the traffic
> with 127 tag.
> This customer has attached to his radio a series of D-Link switches, and
> behind those switches, he has his routers and firewall (PIX 501).
> 
> WS-C2950-24-FastEthernet0/9
> |
> Our-Radio (trunking-mode)
> |
> Customer-radio<-D-Link DSS+8<-PIX 501<-|
>                                  |<-D-Link
>                                  |<-D-Link<- Dev Server, Desktops
> 
> The server at the customer place is connected to the PIX 501 with private IP
> (for VPNS), and also connected to the D-link switch
> 
> Do you think that this issue is due to a device configuration at the
> customer end, trying to participate in the Spanning Tree?
> 
> Regards
> 
> Mario Antonio
> 
> ---
> [This e-mail was scanned for viruses by Webjogger's AntiVirus Protection System]
> 
> _______________________________________________
> cisco-nsp mailing list  cisco-nsp at puck.nether.net
> https://puck.nether.net/mailman/listinfo/cisco-nsp
> archive at http://puck.nether.net/pipermail/cisco-nsp/
> 


-- 
Sorin CONSTANTINESCU
consta at gmail.com
Linux Registered User #222086