Re: [PCN] Re: WG Review: Congestion and Pre-Congestion Notification(pcn)

[Fred Baker <fred at cisco.com>]

On Feb 20, 2007, at 8:15 AM, Georgios Karagiannis wrote:

> I assume that you also have no objection on using the DSCP fields for
> this purpose.

actually, I do, at least in some ways that they might be used. The AF  
service (RFC 2597) is specifically designed to do as you say; EF  
isn't. setting the DSCP on an EF packet in a way that nullifies its  
EF behavior to communicate the onset of congestion mostly nullifies  
the EF service (which doesn't actually do much of anything when there  
is no congestion to perturb packet timing). So I would want any use  
of the DSCP to be coordinated with the other services that the  
datagram hopes for.

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