Date: Sat, 28 Jun 2008 15:14:27 +0400 (MSD) From: .@babolo.ru To: Max Laier <max@love2party.net> Cc: freebsd-net@freebsd.org, Giulio Ferro <auryn@zirakzigil.org>, Alexandre Biancalana <biancalana@gmail.com> Subject: Re: altq on vlan Message-ID: <1214651667.267043.71931.nullmailer@cicuta.babolo.ru> In-Reply-To: <200806271914.30216.max@love2party.net>
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> On Friday 27 June 2008 18:57:59 Alexandre Biancalana wrote:
> > On 6/27/08, Max Laier <max@love2party.net> wrote:
> > > You don't need a patch at all. What you do is: Queue on the
> > > physical interface, classify on the vlan interface. It is broken to
> > > allow ALTQ on a virtual interface if you can do it otherwise.
> > >
> > > in pf.conf speak:
> > >
> > > If you have "ifconfig vlanX vlandev bge0 ..."
> > >
> > > altq on bge0 .... queue { vlan0, vlan1, ... }
> > > queue vlan0 ... { vlan0_foo, vlan0_bar, ... }
> > > queue vlan0_foo
> > > queue vlan0_bar
> > > ...
> > >
> > > pass on vlanX ... queue vlanX_foobar
> > >
> > > And there you go. No patch - whatsoever - required here.
> >
> > But the patch simplify the cases where you need one queue per vlan.
>
> NO! It is just wrong! There is no relation between vlan queues on the
> same physical interface and thus you can't guarantee anything! Can we
> please stop with this nonsense and not bring up the patch every other
> month.
Remember vlan anoter end.
Vlan queues on the same physical interface has sense.
Let see typical vlan use:
+--------+ 100M untagged vlan1
| |--------------..
+---------+ | | 100M untagged vlan2
1G | | 1G tagged | |----------------
--------+ FreeBSD +------------+ switch | 100M untagged vlan3
| | | |--------------..
+---------+ | | 100M untagged vlanN
| |---------------
+--------+
There is noting interesting in common queue on 1G physical interface,
the only right queues are that on vlans when number of
vlans < 10.
More of that, sum traffic on 1G tagged intervace is limited
by incoming traffic from 1G external interface and
so common queue on 1G tagged interface is not
interesting even when number of vlans > 10.
Sorry for bad English.
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