INHO it's not a cable operator kind of questions. AFAIK also DSL
providers are asking for such kind of solution. And it may be that
the SP does not safe money with it's concrete network implementation
but he can definitely re-use the biggest part of its provisioning
and business supporting systems.
Olaf
-----Ursprüngliche Nachricht-----
Von: Hemant Singh (shemant) [mailto:shemant at cisco.com]
Gesendet: Dienstag, 24. März 2009 00:50
An: Bonneß, Olaf; Bernie Volz (volz); narten at us.ibm.com
Cc: dhcwg at ietf.org; ted.lemon at nominum.com; Ralph Droms (rdroms)
Betreff: RE: [dhcwg] DHCPv6 router option
All I am asking for is justification from cable operators because it
seems one of them has fostered this idea. It's not clear yet that
the cable SP is saving money nor clear that all cable SPs would
agree to making changes to cable IPv6 standards to accommodate such
new work.
Hemant
-----Original Message-----
From: Olaf.Bonness at telekom.de [mailto:Olaf.Bonness at telekom.de]
Sent: Monday, March 23, 2009 7:38 PM
To: Hemant Singh (shemant); Bernie Volz (volz); narten at us.ibm.com
Cc: dhcwg at ietf.org; ted.lemon at nominum.com; Ralph Droms (rdroms)
Subject: AW: [dhcwg] DHCPv6 router option
Hi Hemant,
it's not necessary to dive into the tons of emails that have been
written about this in between.
You've seen the presentation by Thomas and he clearly stated that
some ISPs want to operate their networks in that way in order to
safe the money they have already invested in their networks and
provisioning systems.
I can not say that I like this approach very much from an
architectural point of view, but from an ISP perspective its the
easiest and cheapest way to implement IPv6 without major re-
structuring of products / processes and major costs.
So give the ISP the choice to chose which approach it implements and
what it has to pay for offering IPv6 to its customers.
Only my 2 cent
Olaf (working for an ISP)
-----Ursprüngliche Nachricht-----
Von: dhcwg-bounces at ietf.org [mailto:dhcwg-bounces at ietf.org] Im
Auftrag von Hemant Singh (shemant)
Gesendet: Dienstag, 24. März 2009 00:18
An: Bernie Volz (volz); Thomas Narten
Cc: dhcwg at ietf.org; Ted Lemon; Ralph Droms (rdroms)
Betreff: Re: [dhcwg] DHCPv6 router option
Ralph,
Besides Alain Durand who has been asking for this potentially broken
idea to add a router option in DHCPv6, who else is a SP who asked for
this work? Alain also does not represent other cable vendors like
Time-Warner, or Cablevision etc. For that matter, Alain himself
says "I
don't even represent Comcast", so who else from Comcast can speak up
and
say this work is needed?
Let me also bring folks up to speed on Cable IPv6 standards from the
CableLabs. We finished our Cable IPv6 standards more than three years
back and consumer devices like cable modems already follow the RA
model
to get default rtr info and use DHCPv6 as well for ipv6 address
acquisition and other parameters like DNS etc. A consumer device
like a
cable modem has a huge inertia to changing any feature. Likewise a
CMTS router that terminates the cable modems, being a Service Provide
box, has its own inertia to changing core features. I spent two years
of my life between 2005=2007 nursing cable modem vendors to fix very
simple and core IPv6 bugs in their chips and I do consider this
draft to
be rocking that boat. The Provisioning system also changes. Then I
and
Wes spent time finding show stopper bugs in hosts behind cable modems
and discovered that most operating systems were broken in some core
data
forwarding behavior for IPv6 for a specific RA. I do not like any
IPv6
boat rocked even an iota unless there is compelling justification.
So let's not go backward. Alain and Ralph, please explain what is the
problem in the cable broadband network that this draft is needed?
Please be super specific as to what the problem is. Sorry, if the
good
reasons have been given to the mailer - I have not caught up to
mails on
this thread yet. One year back when we discussed this issue with
Alain,
I didn't hear any compelling reason. What has changed since then?
Thanks,
Hemant
_______________________________________________
dhcwg mailing list
dhcwg at ietf.org
https://www.ietf.org/mailman/listinfo/dhcwg