RE: Take ISP BB scenarios as WG document?

["Alan Chang" <ace@speed.cis.nctu.edu.tw>]

Hi Gert & Adeel,

Thanks for your detail explanation.
I know the mechanism of stateless autoconfiguration and DHCP-PD.

I just wonder if this (a node can send/receive RA simultaneously) obeys any
RFC.
Thanks.

-Alan

-----Original Message-----
From: Gert Doering [mailto:gert@Space.Net] 
Sent: Tuesday, January 25, 2005 8:57 PM
To: Alan Chang
Cc: 'JINMEI Tatuya / ?????F?v'; v6ops@ops.ietf.org; sasad@cisco.com
Subject: Re: Take ISP BB scenarios as WG document?

Hi,

On Mon, Jan 24, 2005 at 12:02:09PM +0800, Alan Chang wrote:
> My questions are:
> If yes, does this mean the router can do stateless autoconfiguration?
> If no, how does a CPE router set its address and default route except 
> using manual configuration.

Existing router implementations can indeed do stateless autoconfiguration.

cisco25(config-if)#ipv6 address ?
  WORD                General prefix name
  X:X:X:X::X          IPv6 link-local address
  X:X:X:X::X/<0-128>  IPv6 prefix
  autoconfig          Obtain address using autoconfiguration

but the question remains "how useful is this feature?".  

Yes, the router can autoconfigure its "external" IPv6 address, but it cannot
use stateless autoconfiguration to setup his "internal"
network interface(s), and thus provide stateless autoconf to network
clients.  

For that part, one could use DHCP prefix delegation, though, and with the
combination of both, you can get a fully autoconfiguring IPv6 (CPE) router.

Gert Doering
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