From: Benny Amorsen <benny+usenet@amorsen•dk>
To: David Miller <davem@davemloft•net>
Cc: philipp_subx@redfish-solutions•com,
torsten.schmidt@s2006•tu-chemnitz.de, netdev@vger•kernel.org
Subject: Re: [PATCH] ipv4: add DiffServ priority based routing
Date: Fri, 12 Mar 2010 12:18:05 +0100 [thread overview]
Message-ID: <m3tyslyej6.fsf@ursa.amorsen.dk> (raw)
In-Reply-To: <20100311.112941.177105216.davem@davemloft.net> (David Miller's message of "Thu, 11 Mar 2010 11:29:41 -0800 (PST)")
David Miller <davem@davemloft•net> writes:
> Look, this doesn't work. QoS handling and policy belongs in the
> egress point to the network, it's the only way to control this
> properly and prevent abuse.
First, QoS is important even within the network. Modern switches come
pre-configured with sane defaults which ensure that e.g. EF marked
packets get priority over non-EF-marked packets. Cisco, HP, and
Linksys-Cisco at least provide a decent out-of-the-box configuration.
This can obviously be abused, but the solution there is the same as in
network abuses: Either apply the LART or change the configuration of the
switches to be less trusting. We haven't, so far, had a customer where
the LART was necessary, much less had to reconfigure a switch.
So why not let Linux provide the same out-of-the-box experience as the
switches do? If the trust is abused Linux provides lots of tools to make
it less trusting or even to punish the abusers.
/Benny
next prev parent reply other threads:[~2010-03-12 11:18 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-12 13:32 [PATCH] ipv4: add DiffServ priority based routing Torsten Schmidt
2010-01-12 20:16 ` David Miller
2010-01-12 20:59 ` Philip A. Prindeville
2010-01-12 21:03 ` David Miller
2010-01-12 21:33 ` Philip A. Prindeville
2010-01-13 4:47 ` Steven Blake
2010-03-11 19:25 ` Philip A. Prindeville
2010-03-11 19:29 ` David Miller
2010-03-11 19:32 ` Philip A. Prindeville
2010-03-12 11:18 ` Benny Amorsen [this message]
2011-02-21 6:01 ` Philip Prindeville
2010-01-14 11:50 ` Torsten Schmidt
2010-01-14 12:50 ` Eric Dumazet
2010-01-15 0:51 ` David Miller
2010-01-15 8:24 ` Eric Dumazet
2010-01-15 8:26 ` David Miller
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