Learn what happens when an EIGRP router loses its successor route for the CCNA 200-301 exam. Understand how EIGRP uses query packets to find alternative paths and maintain network convergence.
Table of Contents
Question
A router in an EIGRP network has lost its successor route and is searching for an alternative path. What action does it take?
A. Transitions to a passive state
B. Broadcasts a RIP request
C. Sends a query packet to its neighbors
D. Enters a hold-down state
E. Flushes all routing table entries
Answer
C. Sends a query packet to its neighbors
Explanation
When an EIGRP router loses its successor route and has no feasible successor, it sends query packets to its neighbors asking for an alternative path.
When an EIGRP router loses its successor route and does not have a feasible successor, it sends a query packet to its neighbors. This query asks neighboring routers if they have a route to the lost destination network. The route enters the “active” state during this process. Each neighbor, upon receiving the query, checks its own topology table for an alternative path. If a neighbor has a route, it responds accordingly; if not, it may forward the query further. This mechanism allows EIGRP to dynamically search for alternate paths and maintain network connectivity without loops.
Cisco Certified Network Associate CCNA 200-301 certification exam practice question and answer (Q&A) dump with detail explanation and reference available free, helpful to pass the Cisco Certified Network Associate CCNA 200-301 exam and earn Cisco Certified Network Associate CCNA 200-301 certification.