Re: ISIS and multiple areas

From: Peter van Oene (pvo@usermail.com)
Date: Mon Oct 06 2003 - 20:17:07 GMT-3


At 05:27 PM 10/6/2003, Alvarez, Rolando [NCSUS] wrote:
>Hello group,
>
>I have a question on ISIS and multiple areas. I have seen practice lab
>scenarios were you are asked to configure two ISIS areas on a router. I
>have seen this done two different ways:
>
>One way:
>
>router isis
>net 49.0002.2222.2222.2222.00
>net 49.0003.2222.2222.2222.00

1 ISIS process, two area ID's. Multiple area id's are ok. To become
adjacent, L1 routers must share at least one.

>Another way:
>router isis
>net 49.0002.2222.2222.2222.00
>router isis TEST
>net 49.0003.2222.2222.2222.00

Two ISIS processes, 1 area ID per.

>On the doc CD, they use the second method. On Doyle's book, he uses the
>first method. What are the differences, and what is the preferred way? any
>help would be greatly appreciated.
>Thanks,
>Rolando
>
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