[81104] in North American Network Operators' Group
Re: BCP regarding TOS transparancy for internet traffic
daemon@ATHENA.MIT.EDU (Mikael Abrahamsson)
Wed May 25 17:07:03 2005
Date: Wed, 25 May 2005 23:06:35 +0200 (CEST)
From: Mikael Abrahamsson <swmike@swm.pp.se>
To: nanog@nanog.org
In-Reply-To: <20050525221030.D21553@electra.nolink.net>
Errors-To: owner-nanog@merit.edu
On Wed, 25 May 2005, Lars Erik Gullerud wrote:
> The "general population", who does NOT pay for that privilege, gets the
> BE-treatment, which is what they pay for. And that requires a rewrite of the
> DSCP/TOS for said traffic, otherwise how do you prevent packets from the
> "general population" filling up the queues you have reserved for the
One way is to null MPLS EXP for BE traffic and do QoS on that, and then
set EXP bits to something different for non-BE traffic. That leaves DSCP
transparent end-to-end on the IP packet.
But as I have read the discussion I do think that null:ing DSCP for all BE
traffic is the way to go, and keep the clean copy of DSCP to EXP within
the network for the customers paying for preferred treatment (or whatever
service you want to prioritize).
--
Mikael Abrahamsson email: swmike@swm.pp.se
