Re: [mif] Comments on draft-mouton-mif-dhcpv6-drlo-00
maximilien mouton <maximilien.mouton@gmail.com> Mon, 26 September 2011 08:41 UTC
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Date: Mon, 26 Sep 2011 10:43:38 +0200
From: maximilien mouton <maximilien.mouton@gmail.com>
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To: Ted Lemon <Ted.Lemon@nominum.com>
References: <3CF88B99A9ED504197498BC6F6F04B81040FBDA9@XMB-BGL-41E.cisco.com> <4E6E7A72.9030208@gmail.com> <4E6EAFC2.5060906@gmail.com> <4E6EDEA8.3080108@gmail.com> <CFDF82EE-052B-4A61-AE1B-152337822B6E@nominum.com> <4E6F967B.5030909@gmail.com> <F7334D5F-6C4D-4B60-9F30-A0A9C729DE29@nominum.com>
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Cc: "<mif@ietf.org>" <mif@ietf.org>
Subject: Re: [mif] Comments on draft-mouton-mif-dhcpv6-drlo-00
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Hi Ted again, Le 13/09/2011 19:56, Ted Lemon a écrit : > On Sep 13, 2011, at 1:44 PM, Maximilien MOUTON wrote: >> Even if I grant It would imply big changes in DHCP, I think it >> would be interesting for DHCP to imitate ND dynamic behavior >> because in this draft we are trying to challenge ND by allowing >> DHCP to provide an entire IP/Internet configuration by its own. > > We never had a TTL on the route offered in DHCPv4. Why is DHCPv6 > different? DHCPv6 could be different because of ND. Why include a lifetime in default router list option(DRLO)? ND has been chosen as the best way for default router configuration because it provides a dynamic autoconfiguration. But in some case RA is not set or not desirable. This is what describes Ralph Droms in draft-droms-dhc-dhcpv6-default-router-00. This is why DHCP should provide default router also. Use cases for using default router lifetime are actually each cases in which you can use ND for autoconf and either you can't or don't want to. An example of scenario is given in the draft. As we are here challenging ND as an autoconfiguration mechanism we propose a solution which tries to imitate its dynamic behavior. This is why we propose a lifetime. Here's a concrete case to illustrate this: A client has multiple default routers available. Usually if those routers use RA if the selected default router fails, the connectivity of the client is down while the lifetime of the router in its default router list is not null. At this time another default router is selected. But if a static configuration is used without lifetime, as far as I know, the default router list is not updated and the client connectivity is never recovered whereas it could be. The default router lifetime could solve this problem by making the failed router expire in the client's default router list and let another one take its place. We receive also questions about the interest of providing a link layer address. Why a link layer address field? Because it avoids unnecessary NS/NA exchange which represents an economy of network resources (very useful for some resource constraint networks) and a gain of time because client don't need to wait for NA anymore. This field is also useful if ND is nor present in the link between the client and the router. Maximilien > > > > _______________________________________________ mif mailing list > mif@ietf.org https://www.ietf.org/mailman/listinfo/mif
- [mif] Comments on draft-mouton-mif-dhcpv6-drlo-00 Gaurav Halwasia (ghalwasi)
- Re: [mif] Comments on draft-mouton-mif-dhcpv6-drl… maximilien mouton
- Re: [mif] Comments on draft-mouton-mif-dhcpv6-drl… Brian E Carpenter
- Re: [mif] Comments on draft-mouton-mif-dhcpv6-drl… maximilien mouton
- Re: [mif] Comments on draft-mouton-mif-dhcpv6-drl… Gaurav Halwasia (ghalwasi)
- Re: [mif] Comments on draft-mouton-mif-dhcpv6-drl… Ted Lemon
- Re: [mif] Comments on draft-mouton-mif-dhcpv6-drl… Alexandru Petrescu
- Re: [mif] Comments on draft-mouton-mif-dhcpv6-drl… Alexandru Petrescu
- Re: [mif] Comments on draft-mouton-mif-dhcpv6-drl… Ted Lemon
- Re: [mif] Comments on draft-mouton-mif-dhcpv6-drl… Alexandru Petrescu
- Re: [mif] Comments on draft-mouton-mif-dhcpv6-drl… maximilien mouton
- Re: [mif] Comments on draft-mouton-mif-dhcpv6-drl… Ted Lemon
- Re: [mif] Comments on draft-mouton-mif-dhcpv6-drl… Ted Lemon
- Re: [mif] Comments on draft-mouton-mif-dhcpv6-drl… Alexandru Petrescu
- Re: [mif] Comments on draft-mouton-mif-dhcpv6-drl… Ted Lemon
- Re: [mif] Comments on draft-mouton-mif-dhcpv6-drl… Simon Perreault
- Re: [mif] Comments on draft-mouton-mif-dhcpv6-drl… Alexandru Petrescu
- Re: [mif] Comments on draft-mouton-mif-dhcpv6-drl… Alexandru Petrescu
- Re: [mif] Comments on draft-mouton-mif-dhcpv6-drl… Ted Lemon
- Re: [mif] Comments on draft-mouton-mif-dhcpv6-drl… Simon Perreault
- Re: [mif] Comments on draft-mouton-mif-dhcpv6-drl… Ted Lemon
- Re: [mif] Comments on draft-mouton-mif-dhcpv6-drl… Simon Perreault
- Re: [mif] Comments on draft-mouton-mif-dhcpv6-drl… Alexandru Petrescu
- Re: [mif] Comments on draft-mouton-mif-dhcpv6-drl… Alexandru Petrescu
- Re: [mif] Comments on draft-mouton-mif-dhcpv6-drl… Alexandru Petrescu
- Re: [mif] Comments on draft-mouton-mif-dhcpv6-drl… Alexandru Petrescu
- Re: [mif] Comments on draft-mouton-mif-dhcpv6-drl… Alexandru Petrescu
- Re: [mif] Comments on draft-mouton-mif-dhcpv6-drl… Ted Lemon
- Re: [mif] Comments on draft-mouton-mif-dhcpv6-drl… teemu.savolainen
- Re: [mif] Comments on draft-mouton-mif-dhcpv6-drl… Ted Lemon
- Re: [mif] Comments on draft-mouton-mif-dhcpv6-drl… Alexandru Petrescu
- Re: [mif] Comments on draft-mouton-mif-dhcpv6-drl… Alexandru Petrescu
- Re: [mif] Comments on draft-mouton-mif-dhcpv6-drl… Alexandru Petrescu
- Re: [mif] Comments on draft-mouton-mif-dhcpv6-drl… teemu.savolainen
- Re: [mif] Comments on draft-mouton-mif-dhcpv6-drl… Alexandru Petrescu
- Re: [mif] Comments on draft-mouton-mif-dhcpv6-drl… teemu.savolainen
- Re: [mif] Comments on draft-mouton-mif-dhcpv6-drl… Hui Deng
- Re: [mif] Comments on draft-mouton-mif-dhcpv6-drl… Alexandru Petrescu
- Re: [mif] Comments on draft-mouton-mif-dhcpv6-drl… Alexandru Petrescu
- Re: [mif] Comments on draft-mouton-mif-dhcpv6-drl… Alexandru Petrescu
- Re: [mif] Comments on draft-mouton-mif-dhcpv6-drl… teemu.savolainen
- Re: [mif] Comments on draft-mouton-mif-dhcpv6-drl… maximilien mouton
- Re: [mif] Comments on draft-mouton-mif-dhcpv6-drl… maximilien mouton
- Re: [mif] IPv4 similarity in DefRoute-distinct-fr… Alexandru Petrescu
- Re: [mif] IPv4 similarity in DefRoute-distinct-fr… Ted Lemon
- Re: [mif] IPv4 similarity in DefRoute-distinct-fr… Marc Blanchet
- Re: [mif] Comments on draft-mouton-mif-dhcpv6-drl… Ted Lemon
- Re: [mif] (long, 3GPP) Comments on draft-mouton-m… Alexandru Petrescu