Re: [Softwires] draft-penno-softwire-sdnat vs. draft-cui-softwire-b4-translated-ds-lite

2012-03-14 Thread mohamed.boucadair
Hi Francis, Please see inline. Cheers, Med -Message d'origine- De : francis.dup...@fdupont.fr [mailto:francis.dup...@fdupont.fr] Envoyé : mardi 13 mars 2012 17:56 À : BOUCADAIR Mohamed OLNC/NAD/TIP Cc : draft-penno-softwire-sd...@tools.ietf.org; Softwires WG;

Re: [Softwires] draft-penno-softwire-sdnat vs.draft-cui-softwire-b4-translated-ds-lite

2012-03-14 Thread mohamed.boucadair
Re-, Thanks Rajiv for the pointer. BTW unlike the constraints we have in MAP (e.g., the bits forming PSID must be adjacent), draft-cui-* and the like can use pseudo-random algorithms to generate port ranges. Cheers, Med -Message d'origine- De : Rajiv Asati (rajiva)

Re: [Softwires] draft-penno-softwire-sdnat vs. draft-cui-softwire-b4-translated-ds-lite

2012-03-14 Thread mohamed.boucadair
Dear Qiong, Please see inline. Cheers, Med De : Qiong [mailto:bingxu...@gmail.com] Envoyé : mercredi 14 mars 2012 00:50 À : Francis Dupont Cc : BOUCADAIR Mohamed OLNC/NAD/TIP; Softwires WG; draft-cui-softwire-b4-translated-ds-lite;

Re: [Softwires] IPv4 Residual Deployment - Unified-standard proposal 4rd

2012-03-14 Thread Rémi Després
Le 2012-03-14 à 06:51, Maoke a écrit : 2012/3/13 Rémi Després despres.r...@laposte.net 2012-03-13 12:02, Maoke : 2012/3/13 Rémi Després despres.r...@laposte.net ... The 4rd mechanism is for protocols that have ports at their usual place (all existing protocols that have ports have

Re: [Softwires] IPv4 Residual Deployment - Unified-standard proposal 4rd

2012-03-14 Thread Maoke
2012/3/14 Rémi Després despres.r...@laposte.net Le 2012-03-14 à 06:51, Maoke a écrit : 2012/3/13 Rémi Després despres.r...@laposte.net 2012-03-13 12:02, Maoke : 2012/3/13 Rémi Després despres.r...@laposte.net ... The 4rd mechanism is for protocols that have ports at their usual

Re: [Softwires] IPv4 Residual Deployment - Unified-standard proposal 4rd

2012-03-14 Thread Rémi Després
Le 2012-03-14 à 10:00, Maoke a écrit : 2012/3/14 Rémi Després despres.r...@laposte.net Le 2012-03-14 à 06:51, Maoke a écrit : 2012/3/13 Rémi Després despres.r...@laposte.net 2012-03-13 12:02, Maoke : 2012/3/13 Rémi Després despres.r...@laposte.net ... The 4rd mechanism is

Re: [Softwires] IPv4 Residual Deployment - Unified-standard proposal 4rd

2012-03-14 Thread Maoke
2012/3/14 Rémi Després despres.r...@laposte.net Le 2012-03-14 à 10:00, Maoke a écrit : 2012/3/14 Rémi Després despres.r...@laposte.net Le 2012-03-14 à 06:51, Maoke a écrit : 2012/3/13 Rémi Després despres.r...@laposte.net 2012-03-13 12:02, Maoke : 2012/3/13 Rémi Després

[Softwires] MAP support of IPv4 prefixes?

2012-03-14 Thread Rémi Després
Ole, co-authors of draft-mdt-softwire-mapping-address-and-port-02, Sec. 1 says:: the residual IPv4 over IPv6 mechanisms must be capable of...Provisioning an IPv4 prefix, an IPv4 address or a shared IPv4 address. (We all agree, I think, that this is important.) Sec.5.2 says: The MAP IPv6

Re: [Softwires] draft-penno-softwire-sdnat vs. draft-cui-softwire-b4-translated-ds-lite

2012-03-14 Thread Alain Durand
Hi Med, see inline response to your questions wrt sd-nat-02 On Mar 13, 2012, at 10:58 AM, mohamed.boucad...@orange.commailto:mohamed.boucad...@orange.com mohamed.boucad...@orange.commailto:mohamed.boucad...@orange.com wrote: (*) Question 1: It is not clear in text if there is a second

Re: [Softwires] draft-penno-softwire-sdnat vs. draft-cui-softwire-b4-translated-ds-lite

2012-03-14 Thread Peng Wu
Hi Alain, It's a little confusing now. Let me try to get things clear. So the sd-nat-02 is not quite similar to the earlier version, the mechanism somehow changes. In my understanding, now the principle of the mechanism is similar to the lightweight 4over6 draft, but I may miss something here.

Re: [Softwires] MAP support of IPv4 prefixes?

2012-03-14 Thread Ole Trøan
Remi, Ole, co-authors of draft-mdt-softwire-mapping-address-and-port-02, Sec. 1 says:: the residual IPv4 over IPv6 mechanisms must be capable of...Provisioning an IPv4 prefix, an IPv4 address or a shared IPv4 address. (We all agree, I think, that this is important.) Sec.5.2 says: The

Re: [Softwires] draft-penno-softwire-sdnat vs. draft-cui-softwire-b4-translated-ds-lite

2012-03-14 Thread Francis Dupont
In your previous mail you wrote: In your previous mail you wrote: (*) Question 1: It is not clear in text if there is a second NAT in the AFTR or not. Could you please confirm/infirm a second NAT is present? = there is one but: - it translates

Re: [Softwires] draft-penno-softwire-sdnat vs. draft-cui-softwire-b4-translated-ds-lite

2012-03-14 Thread mohamed.boucadair
Re-, Thanks Alain for the answers. Please see inline. Cheers, Med -Message d'origine- De : Alain Durand [mailto:adur...@juniper.net] Envoyé : mercredi 14 mars 2012 12:11 À : BOUCADAIR Mohamed OLNC/NAD/TIP Cc : draft-penno-softwire-sd...@tools.ietf.org; Softwires WG;

Re: [Softwires] MAP support of IPv4 prefixes?

2012-03-14 Thread Rémi Després
Le 2012-03-14 à 13:17, Ole Trøan a écrit : Remi, Ole, co-authors of draft-mdt-softwire-mapping-address-and-port-02, Sec. 1 says:: the residual IPv4 over IPv6 mechanisms must be capable of...Provisioning an IPv4 prefix, an IPv4 address or a shared IPv4 address. (We all agree, I think,

[Softwires] Question about hub-and-spoke operation in MAP

2012-03-14 Thread Rémi Després
Ole, Tomek, I couldn't figure out by how CEs can be required to work hub-and-spoke without some DHCPv6 indication: - If two CEs apply the same BMR to their delegated IPv6 prefixes, how do they know whether their ISP expects direct paths between them (mesh) or BR hairpinning (hub-and-spoke)?

Re: [Softwires] draft-penno-softwire-sdnat vs. draft-cui-softwire-b4-translated-ds-lite

2012-03-14 Thread Francis Dupont
In your previous mail you wrote: However, the draft seems give people impression there is only one NAT at CPE(i.e. 2.3. Stateless DS-Lite CPE operation) and AFTR is responsible for decapsulation and IPv4 package validation. Did I miss something? = yes, the SD-CGN (the SD-AFTR with

Re: [Softwires] draft-penno-softwire-sdnat vs. draft-cui-softwire-b4-translated-ds-lite

2012-03-14 Thread Francis Dupont
In your previous mail you wrote: = I leave the draft-penno-* unclear items to Reinaldo... (note: 1- it should be not what we want as it makes CPEs trivial to track, 2- it doesn't remove the mandatory check on source ports in the from CPE to the Internet way) Med: I

Re: [Softwires] IPv4 Residual Deployment - Unified-standard proposal 4rd

2012-03-14 Thread Lee, Yiu
Hi Maoke and Remi, Thanks very much for discussing this issue on the mailing-list. I guess the points are now clear for both options. IMHO, there is no one better than the other, it is all about choice of implementation. Perhaps it is time for more people to comment how they feel for both

Re: [Softwires] Question about hub-and-spoke operation in MAP

2012-03-14 Thread Ole Trøan
Remi, I couldn't figure out by how CEs can be required to work hub-and-spoke without some DHCPv6 indication: - If two CEs apply the same BMR to their delegated IPv6 prefixes, how do they know whether their ISP expects direct paths between them (mesh) or BR hairpinning (hub-and-spoke)?

Re: [Softwires] draft-penno-softwire-sdnat vs. draft-cui-softwire-b4-translated-ds-lite

2012-03-14 Thread Lee, Yiu
I am a little lost. Let's put the double-nat aside for a moment. Except the fact that sd-nat uses icmp for port-set provisioning, what else different between Lightweight 4over6 vs. sd-nat? Am I missing something? For Lightweight 4over6, we can use anycast for redundancy. I fail to see what sd-nat

Re: [Softwires] draft-penno-softwire-sdnat vs. draft-cui-softwire-b4-translated-ds-lite

2012-03-14 Thread Francis Dupont
In your previous mail you wrote: (*) Question 1: It is not clear in text if there is a second NAT in the AFTR or not. Could you please confirm/infirm a second NAT is present? in sd-nat, packets originated by an sd-CPE will be 'shaped' to use the correct IPv4

Re: [Softwires] draft-penno-softwire-sdnat vs. draft-cui-softwire-b4-translated-ds-lite

2012-03-14 Thread Qiong
Me too. And another comment: In sd-nat, it says More importantly, that draft (lightweight 4over6) does not explain how this solution can be deployed in a regular DS-Lite environment. I think this is a deployment issue and lightweight 4over6 can definitely be deployed in a regular DS-Lite

Re: [Softwires] IPv4 Residual Deployment - Unified-standard proposal 4rd

2012-03-14 Thread Maoke
2012/3/14 Rémi Després despres.r...@laposte.net Le 2012-03-14 à 10:46, Maoke a écrit : 2012/3/14 Rémi Després despres.r...@laposte.net Le 2012-03-14 à 10:00, Maoke a écrit : 2012/3/14 Rémi Després despres.r...@laposte.net Le 2012-03-14 à 06:51, Maoke a écrit : 2012/3/13 Rémi

[Softwires] Apology

2012-03-14 Thread Tom Taylor
Behcet, I apologize. Even if we differ on what constitutes a multicast solution, I was wrong to refer to your drafts in a pejorative manner. Tom Taylor ___ Softwires mailing list Softwires@ietf.org https://www.ietf.org/mailman/listinfo/softwires