External route summarization is performed on which OSPF router type?

Last Updated: Jun 29, 2026
IT Exam Items Repository › Category: CCNP ENARSI v9 › External route summarization is performed on which OSPF router type?

External route summarization is performed on which OSPF router type?

  • ASBR
  • ABR
  • Backbone router
  • Internal router

Explanation: External route summarization is the process of consolidating routes redistributed from other routing protocols. This function is performed exclusively on an Autonomous System Border Router (ASBR) before it injects AS External (Type 5) LSAs into the OSPF domain.

Related exam: Checkpoint Exam: Layer 3 Technologies – OSPF

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