Cisco Certified Network Professional (CCNP) Question:
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What is the difference between the types of routes allowed by default into IS-IS and OSPF areas?


By default, all routes are advertised into all OSPF areas. This includes interarea OSPF routes and external routes that have been injected into OSPF. By default, IS-IS does not advertise interarea or external routes into an area, but injects a default route.

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