Le 31 oct. 2011 à 14:09, Cameron Byrne a écrit : > > On Oct 31, 2011 2:25 AM, "Rémi Després" <[email protected]> wrote: > > > > Hi Masataka-san, > > > > 1. > > Thank you for sharing your interesting experience with the JPIX trial > > service based on 464XLAT. > > Could you, for clarification, describe in more details formats of XLAT > > prefixes in this trial? > > > > 2. > > Objectives of 464XLAT and 4rd-U look very similar (ref > > draft-despres-softwire-4rd-u-01). > > > > Indeed: > > - Both use "DHCPv6 prefix delegation or another method" to inform CLAT/CEs > > of their IPv6 prefixes. > > - Both "can implement traffic engineering based on IPv4 source address and > > IPv4 destination address" (a feature that, as noted in your draft, is > > missing in encapsulation). > > > > OTOH, unless I miss something, 464XLAT doesn't provide incoming > > connectivity of CLATs in case of shared IPv4 addresses (while 4rd-U does > > provide it to CEs). In this respect 4rd-U seems functionally more complete. > > > > Thoughts? > > > > The difference, imho, is stateful vs stateless. > > Many operators like myself do not have enough ipv4 addresses to incrementally > grow with a stateless solution. > Sharing the orders of magnitude you have to face would help to appreciate this constraint (reminding that hosts that are dual-stack don't need as many IPv4 ports as others).
> It is not possible to renumber the existing network and flash everyone into a > stateless solution, so I require a more scalable solution ...starting with > very few address. > > Also, given the very small amount of existing ipv4, the per port allocations > of a stateless solution are not acceptable for me. > Same point as above. Regards, RD > Others may have different starting positions therefore may find stateless > helpful. > > Cb > > > > Regards, > > RD > > > > > > > > > > Le 27 oct. 2011 à 07:44, MAWATARI Masataka a écrit : > > > > > Greetings Alain-san, > > > > > > > > > Please let me make a presentation at IETF 82 Meeting. > > > I would like to introduce the following draft as a v4->v6->v4 > > > translation experience in softwire working group. > > > > > > --- > > > Topic: "464XLAT: Combination of Stateful and Stateless Translation" > > > Draft name: draft-mawatari-softwire-464xlat-01 > > > Time needed: 5-10minutes > > > Presenter's name: Masataka Mawatari > > > --- > > > > > > This is a simple technique to provide IPv4 access service across > > > IPv6 network just by using twice IPv4/IPv6 translation standardized > > > in [RFC6145] and [RFC6146]. > > > > > > http://tools.ietf.org/html/draft-mawatari-softwire-464xlat > > > > > > > > > Regards, > > > Masataka MAWATARI > > > > > > > > > * On Wed, 26 Oct 2011 18:22:04 +0200 > > > * Remi Despres <[email protected]> wrote: > > > > > >> Hi Alain, > > >> > > >> Can you please schedule a time slot for a 4rd-U presentation: > > >> > > >> Title : A Unified stateless solution for IPv4 residual > > >> Deployments (4rd-U) > > >> Document: draft-despres-softwire-4rd-u-01 > > >> Duration: 20 min (incl questions, expected to be numerous) > > >> > > >> Thanks. > > >> RD > > > > > > -- > > > Japan Internet Exchange > > > MAWATARI Masataka <[email protected]> > > > tel:+81-3-3243-9579 > > > > > > _______________________________________________ > > > Softwires mailing list > > > [email protected] > > > https://www.ietf.org/mailman/listinfo/softwires > > _______________________________________________ > > Softwires mailing list > > [email protected] > > https://www.ietf.org/mailman/listinfo/softwires
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