Looks like there is a bug in the LLDP protocol handling.  I can take a 
look at this.  Glen, would it be possible for you to send a pcap file of 
the offending packet?

thanks!
.martin

> Hi Glen,
>
> On the HP switches, I usually run the following commands:
>
> lldp admin-status [dataports] disable
>
> no spanning-tree
>
> [dataports] refers to a1-a24 on the current HP setup.
>
>
> These ensure that the switch send no traffic out the OF interfaces; 
> maybe this will help in the meantime.
>
> -Brandon
>
>
> On Wed, Jul 30, 2008 at 11:42 AM, Glen Gibb <[EMAIL PROTECTED] 
> <mailto:[EMAIL PROTECTED]>> wrote:
>
>     Hi all,
>
>     We plugged an HP ProCurve switch into an OpenFlow switch today and
>     it caused crashes in discovery:
>
>     00002|pyrt|ERR:unable to invoke a Python event handler:
>     Traceback (most recent call last):
>      File "./nox/lib/util.py", line 115, in f
>       event.total_len, buffer_id, packet)
>      File "./nox/apps/discovery/discovery.py", line 148, in <lambda>
>       discovery.lldp_input_handler(self,dp,inport,reason,len,bid,packet),
>      File "./nox/apps/discovery/discovery.py", line 235, in
>     lldp_input_handler
>       (portid,)  =  struct.unpack("!H", lldph.tlvs[1].id)
>      File "/usr/lib/python2.5/struct.py", line 87, in unpack
>       return o.unpack(s)
>     error: unpack requires a string argument of length 2
>
>     Attached is the Packet In message containing the LLDP packet.
>
>     Let me know if there's any other info you need,
>     Glen
>
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>
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