Q23Network Design
How can EIGRP topologies be designed to achieve the fastest possible convergence when a point-to-point link fails?
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Community votes
Discussion · 7
A 5
Selected Answer: A
A is the answer, yes.
A 3
Selected Answer: A
vote for A
https://ine.com/blog/2009-08-02-eigrp-query-scoping
C 2
Selected Answer: C
Maybe consider C?
By building neighbor adjacencies in a squared fashion, you can cut down the diameter of the EIGRP network and limit the scope of query propagation. That means when a link failure happens, the query messages used to recompute routes have a smaller domain to cross, which leads to faster convergence. In a squared fashion, each router is directly connected to its neighbors, forming a square or grid-like topology.
This approach helps minimize query propagation delay and reduce the time needed for reconvergence, letting the network converge quickly and keep optimal routing paths.
E 2
Selected Answer: E
The question asks about “topologies can be designed”
For me is triangle, which improves the fast convergence for EIGRP (square is worst).
Summarisation also helps make the convergence faster too
A 2
Selected Answer: A
Summarization lowers the routing table size by combining multiple routes into a single summary route. When a specific route fails, EIGRP queries stay inside the area defined by the summary route, which keeps them from spreading across the whole network. That containment makes convergence faster because fewer routers need to process the queries and respond.
1
E
https://pupuweb.com/ccde-v3-0-400-007-qa-how-eigrp-designed-converge-fast-event-p2p-link-failure/#:~:text=and%20network%20instability.-,Building%20neighbor%20adjacencies%20in%20a%20squared%20fashion%20means%20that%20each,to%20find%20a%20new%20path.
E 1
Selected Answer: E
Imagine a topology like A-B-C-D and the failure of the A-B link. How would summarization or a triangle topology help.