IS-IS Passive Interfaces

by Beni   Last Updated June 13, 2019 09:01 AM

I've got a question about IS-IS. I don't really get the point of passive interfaces in IS-IS. I know passive interfaces provide a method of advertising network prefixes into IS-IS. But I don't really get the point why this is necessary. Is it for the loopback?

Thx for your help in advance.

Kind regards


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