From: Richard Davidson (rich@myhomemail.net)
Date: Wed Mar 26 2003 - 20:48:32 GMT-3
If you look at the book again on page 601, it says in
summary: The cisco standard for the system ID has to
be 6 octets. This is not true for the ISO 10589
standard but just for cisco. It also says that it is
usualy a MAC on the system. It doesn't mater what you
put here just as long as it is 6 octets. If my router
is R1 and the Area is 49 I make it:
49.1111.1111.1111.00.
Richard Davidson
--- ccie2be <ccie2be@nyc.rr.com> wrote:
> Hi,
>
> I hope this isn't a silly question.
>
> In Doyle's book, he says that usually the NET is
> made up from the area ID with
> the MAC address appended to it.
>
> I'm wondering is this a rule or a suggestion? And,
> if it's a rule, does it
> matter which MAC address is used?
>
> Since the NET in ISIS is comparable to the Router ID
> in OSPF and applies to
> the router as a whole, it seems to me it shouldn't
> matter what MAC address is
> used. And, taking that 1 step further, if it
> doesn't matter what MAC address
> is used, perhaps it doesn't matter if a MAC address
> is used at all.
>
> Please set me straight on this. Thanks, Jim
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