Christophe, On 28/03/2015 01:56, BERENGUER Christophe wrote: > Hi, > > I have found the figure in this document : > https://tools.ietf.org/html/draft-lopez-v6ops-dc-ipv6-05#section-3.4
That is a very old and expired personal draft, not an IETF document. Very dangerous to rely on such a document. It was eventually replaced by a working group draft http://tools.ietf.org/html/draft-ietf-v6ops-dc-ipv6-01#section-2.5.4 but that has not been accepted to become an RFC and has also expired after an unsuccessful WG Last Call. (You can always check the status of an Internet-Draft at https://datatracker.ietf.org/doc/ .) But in any case, look at the full context: Depending of the complexity of the DC network, provisioning and other factors we estimate that the extra costs (and later savings) may be around between 15 to 20%. Note the parenthesis! Regards Brian > Regards, > > Christophe BERENGUER > Consultant > Fixe : +33 (0)1 49 03 85 86 > [email protected] > solucom > Tour Franklin : 100 - 101 terrasse Boieldieu > 92042 Paris La Défense Cedex > > ________________________________________ > De : Brian E Carpenter <[email protected]> > Envoyé : vendredi 27 mars 2015 13:21 > À : BERENGUER Christophe > Cc : Ted Mittelstaedt; [email protected] > Objet : Re: Cost of IPv6 for IT operations team > >> The 20% figure is based on an IETF document > > Which one? We can fix that if people think it's wrong. > (This comes just too late for yesterday's v6ops meeting > at the IETF in Dallas.) > > Regards > Brian > >
