[rescue] What is this traffic?

microcode at zoho.com microcode at zoho.com
Thu Oct 29 10:47:47 CDT 2015

On Thu, Oct 29, 2015 at 11:40:09AM -0400, Mouse wrote:
> > My network is an ADSL router into an 8 port TP-Link unmanaged switch.
> > For a long time now, when my network is idle (as far as I know) the
> > switch has been showing a very high level activity on the line from
> > the router while the router itself shows no activity on the WAN/LAN.
> Curious, at the very least.
> Personally, I would take a machine with two Ethernets, bridge them in
> software (from memory, for the NetBSD version I'd use: ifconfig bridge0
> create; brconfig bridge0 add INTF1; brconfig bridge0 add INTF2;
> ifconfig bridge0 up; brconfig bridge0 up), interpose that between the
> two devices, and fire up tcpdump.
> Depending on what the issue is, the problem might go away entirely (eg,
> some autonegotiation issues will disappear under such a setup).  It
> also might persist, in which case you might be able to see what's up.

Thanks, Mouse. I'll try what Jonathan Katz and Andrew Hay suggested, taking
the switch out of the line. If that doesn't shed any light I'll look into
the bridging thing. But I will probably need a lot of help with that.


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