Re: IPV6 Link-Local, manually spec vs auto

It really depends. I personally also use static link-local addresses
since you never run into problems, you have control and it makes it
really easy to read. You could even use the same addresses on every
link if it makes you happy.

On the other hand, I never ran into problems with IPv6 link-local
addresses, only once on a router with just serial interfaces. Since it
then can't 'steal' one from an ethernet interface, it can't generate
the link-local address.

As for your points, the proctor will NOT load your config on another
rack or even reload it when grading. Only when you ask for a re-read
your configs will be loaded on a different rack, then it shouldn't
matter either, because that rack will have the exact same hardware
specifications as the rack you did your lab on.

I hope this answers all your questions.

--
Regards,
Rick Mur
CCIE2 #21946 (R&S / Service Provider)
Sr. Support Engineer  IPexpert, Inc.
URL: http://www.IPexpert.com
On 19 sep 2009, at 15:13, Martin Hogan wrote:
> Greetings,
>
> Thinking about IPV6 over a non-broadcast segment - standard mode of
> operation for me was to always allow the router itself to generate the
> Link-Local addresses and then add those to the frame map ipv6
> statements.
>
> However, looking at INEs lab documents, they specify a link-local
> address,
> this makes it easier to type out but also got me thinking:
>
> Why?
>
> Possible answers:
> * When the Proctor loads the config onto another rack it is
> guaranteed to
> work regardless as the link-local will be specified rather then
> generated.
> Possible argument against is the assertion that the Lab is graded on
> the
> same kit you wrote it on. * Some people have stated that the Proctor
> told
> them they mark it on the same lab - what about a re-read?
> * Easier to read for students in the examples
> * Darby once said that this is the go.
>
> Of course this all goes out the window if in the actual lab they
> give you
> link-local addresses to use (would make it easier for the marking
> scripts)
>
> Thoughts?
>
> Martin
>
>
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