Ethereal-users: Re: [Ethereal-users] Protocol question

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From: Breen Mullins <bmullins@xxxxxxxxxx>
Date: Fri, 09 Jul 2004 09:50:06 -0700
On Fri, 2004-07-09 at 09:00, Matt Kopf wrote:
> When running ethereal on our LAN I get a flood of packets with protocol
> 0x8808. the source is 00:00:00_00:00:00 and the destination is
> Spanning-tree-(for-bridges)_01. Under info it says Ethernet II.
> 
> What I am trying to find out is what device on our network is sending this
> junk out so I can shut it up. I have been unable to find any useful
> information on google about it. Any one know?


Ethertype 0x8808 is a flow control frame. It should have a valid
source MAC, but yours apparently doesn't. 

I'd bet first on a dodgy switch. Any bridge that groks flow control
should sink those. The source is probably the switch that you're
connected to. Try another port, or another switch.

Breen
-- 
Breen Mullins                      408-435-8401x123 	  
SQA Engineer                       0xde05499b          
Asante Technologies, Inc.