Re: "ipv6 address autoconfig" - how does it work?

From: Mathew Fernando (mathewfer@gmail.com)
Date: Wed May 31 2006 - 02:01:15 ART

Hi Gianpietro,

Thank you for the reply.
The below answered my question.
By mistake, I re-sent my question again. Sorry about it.

mathew

On 5/29/06, Gianpietro Lavado <gianpietro1@gmail.com> wrote:
>
> 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_reference_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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-- 
Thanks

Mathew

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