[AusNOG] DSCP on internet services

McDonald Richards macca at vocus.com.au
Wed Feb 17 16:28:01 EST 2010

Agreed. Standard practice at every place I’ve worked has been to remark DSCP
to 0 on ingress for all “Internet” traffic.


From: ausnog-bounces at lists.ausnog.net
[mailto:ausnog-bounces at lists.ausnog.net] On Behalf Of Phillip Grasso
Sent: Wednesday, 17 February 2010 4:17 PM
To: Raymond, Adam
Cc: ausnog at ausnog.net
Subject: Re: [AusNOG] DSCP on internet services

sorry let me be clear,
resetting dscp bits to 0 (or other internal classify for best effort) is
normal for large ISP's with internal qos policies. proper behaviour is to
leave last two bits alone for ECN, but I doubt ecn bits are passed across
the internet freely. 
On Wed, Feb 17, 2010 at 3:56 PM, Phillip Grasso <phillip.grasso at gmail.com>
My understanding that is the de facto standard for most large SP's .
Especially if they run their own qos policies internally. 

On Wed, Feb 17, 2010 at 3:42 PM, Raymond, Adam <Adam.Raymond at nn.com.au>
            I am wandering if other networks modify the DSCP of internet
customers when they receive the traffic from the customer (such as resetting
it to BE for all traffic). What is seen as being “best practice” for this
Adam Raymond 
IP Project Engineer
NextGen Networks
Direct:   03 8623 3638 
Level 6, 333 Collins St 
Melbourne  VIC  3000
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