300-410 ENARSI: Implementing Cisco Enterprise Advanced Routing and Services

By Cisco · Question Mode

QuestionQ18

Layer 3 Technologies

An engineer configured routing across multiple OSPF domains and introduced a routing loop that resulted in network instability. Which action fixes the issue?

Explanation

Routes redistributed from an OSPF domain should be tagged at redistribution and filtered inbound by the same tag in the other domain. This prevents routes that originated in a domain from being installed after returning through another domain, so they cannot be redistributed back into their source domain and form a routing loop.

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