Scott,
The most compelling application I've seen is
for QoS classification when the packet
is encrypted. Most of the other applications
people have cited can probably be handled
by other means, as you point out.
jak
----- Original Message -----
From: "Scott Bradner" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Monday, December 24, 2001 4:49 PM
Subject: Re: Flow Label
>
> I've been watching the discussion over the IPv6 flow label for a while
> and (like Perry) have yet to see anything I woukd call a real reason
> to be doing anything with it - specifically I've seen no vendors say
what
> specific use they would put a FL to.
>
> I find it hard to see why so much time is being spent on this other
> than the fear that idle bits are the devil's playground - i.e. the
> fear of unassigned bits in the header - I'd rather wait until
> we are real sure that 1/ there is one or more use(s) for the FL that
> consensus can be reached on, 2/ have some understanding on what the
FL
> characteristics are for those uses
>
> Over the last few years I have seen suggestions ranging from the
original
> idea of ofloading router forwarding engines (hard to justify in an era
> of ASIC-based and network processor-based forwarders, to an ID for the
> owner of the content of a packet, to QoS lables (which are hard to
> diferentiate from difserv code points in teh real world), to billing
> information. None of these have presented a compelling reason to
think
> that we understand any FL use well enough to define anything now.
>
> ymmv
>
> Scott
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