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Advertise an interface in ISIS without ip router isis

When configuring ISIS on an interface (a loopback for example) you something find the constraint "Advertise the Loopback0 in ISIS, do not use ip router isis and the prefixes should appear as internal ISIS routes". Lets take in another way, ever wondered why ip router isis disappears when you type passive-interface ? (more…)

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ISIS over NBMA

When configuring ISIS over NBMA networks (such as ATM or FR) don't forget that you probably configured static mapping such as For ATM (more…)

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