Hi Brian,

On Tue, 01 Dec 2009 14:52:30 +1300
Brian E Carpenter <[email protected]> wrote:

> > The lawful intercept question is an interesting one, but
> > as you say if the ISP owns both the L2 and L3 infrastucture
> > there should be a way to support it. It may be much more
> > challenging to do the intercept from L2 switches located
> > close to the CPEs, however, since you may need many points
> > of intercept in order to watch all CPEs. 
> > 
> >> I think it'd be useful if this draft or associated ones provided a
> >> mechanism applicable to this ISP scenario.
> > 
> > OK. Thanks.
> 
> However, the IETF policy stated in RFC2804 says
> 
> "1. Summary position
> 
>    The IETF has decided not to consider requirements for wiretapping as
>    part of the process for creating and maintaining IETF standards."
> 
> so while this issue may affect actual deployment scenarios, it can't
> directly affect our protocol design requirements here.
> 

I think a "prefix redirect" mechanism is justified because it provides
more optimal forwarding for inter-CPE traffic. I only brought up
the LI issue and addressed it because that seemed to be the only
objection there was to the idea when I suggested it before. I don't
think it is a valid concern, and if the IETF has decided not to
consider LI type requirements, then it is one less thing any drafts have
to address and document.


> (I would suggest that statements of agreement or disagreement with
> this IETF policy don't belong on this list.)
> 
>     Brian

Regards,
Mark.
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