Yes, you are pefectly right. I will try to research it a bit later, and maybe run a quick lab test.
Arie -----Original Message----- From: George Manousakis [mailto:[email protected]] Sent: Sunday, October 17, 2010 13:55 To: Arie Vayner (avayner); [email protected] Subject: RE: [c-nsp] Relaying the ipv6 pd prefix from ADSL to internal routers Arie, Thanks for your reply. How could that work? I must assign the /48 prefix on a #2 general-prefix in order to be able to assign multiple lans on different interfaces on #2. This information exist only in atm/dialer interface dhcp client of #1. In order to talk about relay (in general) there has to be a configured server. The only server that gives prefixes is the isp, which of course will never answer the same /48 prefix from a relay router (#2). I suppose it would be more logical not to answer at all to #2. The best way would be to setup the server on #1. And that server could serve the prefix and all other information to the #2 (and not only) router via client or relay configuration. And that works. But on the #1 router hosted server you can import only a few information: cisco(config-dhcpv6)#import ? dns-server Import DNS address domain-name Import Domain name option information Import information refresh option nis Import NIS options nisp Import NISP options sip Import SIP options sntp Import SNTP option but NOT the pd prefix !!!! So in older to have an applicable ipv6 configuration there must be a way to relay that /48 prefix from isp to inside routers. Or the isp's should change their policy and give static ipv6 prefix per subscriber! And since the second option will probably be chargeable... I want to find a way to do the first one. George > -----Original Message----- > From: Arie Vayner (avayner) [mailto:[email protected]] > Sent: Saturday, October 16, 2010 10:07 PM > To: George Manousakis; [email protected] > Subject: RE: [c-nsp] Relaying the ipv6 pd prefix from ADSL to internal > routers > > George, > > Did you try to configure router#2 as DHCP relay (on its inside side) > setting the router#1 link local address as the relay server? > Never tried it, but this would be my next step... > > Arie > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of George > Manousakis > Sent: Saturday, October 16, 2010 17:31 > To: [email protected] > Subject: [c-nsp] Relaying the ipv6 pd prefix from ADSL to internal > routers > > Let's say that I have an adsl router (#1) connected to an ipv6 isp > provider. > > > > Via DHCPv6 I could get a dynamic /48 prefix on my internet router, and > I > could use it wherever I want to on #1 since I have the /48 prefix > matched on > a general-prefix variable. That way I can have 2^16 /64 lans on router > #1. > > > > What if I want is to relay that specific /48 prefix to another router > (#2) > that has an Ethernet connection with router #1 in order to serve ipv6 > lans > on router #2. The interface of #2 that is connected on #1 gets an ipv6 > address with a prefix of /64 and #2 gets ipv6 internet connectivity but > no > other interfaces can be configured because the prefix of the isp is not > known to #2. > > > > Its seems to me to a very common case scenario but I haven't found any > configuration example. > > You can configure a dhcp server of #1 but you can only announce dns, > domain > and STATIC local ipv6 pools. I want to announce the dynamic ipv6 pool > that > is stored on #1 and is assigned from the ISP. > > > > How can I do that??? > > > > Thanks in advance > > _______________________________________________ > cisco-nsp mailing list [email protected] > https://puck.nether.net/mailman/listinfo/cisco-nsp > archive at http://puck.nether.net/pipermail/cisco-nsp/ _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
