I just want to clear some confusion!
IS-IS is ISO protocol that doesn't have native support of IP, is that correct?
To add the support of IP IS-IS use different TLV which represent the IP characteristics required for IP communication as well as to support IP link state routing protocol characteristics! right?
Now IS-IS does use the NET to in routing process so it is required to have NET even in IP only routing domain so it is necessary to encapsulate the IP related routing packets into original ISO IS-IS encapsulation, is that correct?