From: Gianpietro Lavado (gianpietro1@gmail.com)
Date: Sun May 28 2006 - 20:01:27 ART
Hi Fernando,
The command 'ipv6 address enable' just generates the
corresponding link-local address on the interface and enables neighbor
discovery without having to configure an ipv6 global or site-local address
statically, or automatically (with ipv6 address autoconfig).
The command 'ipv6 address autoconfig' however, will additionally make the
router listen and use icmpv6 router advertisements from local routers, in
order to discover an advertised global/site-local prefix, then it will add
the eui-64 host part to the discovered prefix and autoconfigure this address
as the ipv6 address (not link-local) on the interface. This is a host-like
behavior and it's called stateless autoconfiguration.
For more information, take a look at:
http://www.cisco.com/en/US/products/sw/iosswrel/ps5187/products_command_refer
ence_chapter09186a00801d6631.html#wp1981270
http://www.cisco.com/univercd/cc/td/doc/product/software/ios123/123cgcr/ipv6_
c/sa_bconn.htm#wp1068144
HTH
Gianpietro
On 5/26/06, Mathew Fernando <mathewfer@gmail.com> wrote:
>
> Hi Group,
>
> I am just starting to understand how the command "ipv6 address autoconfig"
> works.
>
> Does this only generate the link local address on the interface?
> If yes, what is the difference between this command and the "ipv6 enable"
> which does the same.
>
> What am I missing here?
>
> --
> Thanks
>
> Mathew
>
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