Re: snooping htb default class

Linux Advanced Routing and Traffic Control

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On Mon, 30 Apr 2012 10:37:48 +0100
Andy Furniss <andyqos@xxxxxxxxx> wrote:

> > I can see some bursts of 500~700Kbps about every 100 seconds!! Then it
> > slows to 10~15Kpbs again.
> >
> > But when I "tcpdump -npi dummy0" I see only a few packets now and then!
> > Not the avalanche I would expect.
> >
> > Why don't my filter rules grab ALL default htb class rule traffic and
> > send it to dummy0??
> 
> I've never played with tcpdump on dummy so can't comment on that.
> 
> htb default on eth will see all traffic not just ip/ipv6 which unless 
> you filter arp elsewhere may bite you one day.
> 
> Try using "protocol all" to see what's not being filtered.

I followed your advice. I found what "bites" me. 802.1q!
My output to the world is thru vlans at eth1 (not eth0 or ifb0).

But what in the world is 802.1q protocol doing at eth0/ifb0 interfaces??
They should appear only at vlan+ interfaces, shouldn't it?

Regards

Ethy
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