- A
Neighbor 192.168.1.2 has a high SRTT indicating a slow link.
Why wrong: SRTT of 10 ms is low, not high.
- B
All EIGRP neighbors are operating normally.
All neighbors show normal hold timers, uptimes, and zero queued packets.
- C
Neighbor 10.10.10.2 is experiencing packet loss due to high RTO.
Why wrong: RTO of 200 ms is standard for this SRTT.
- D
The Q count of 0 indicates that EIGRP is not exchanging routes.
Why wrong: Q count of 0 means no packets are queued, which is normal.
Question 602 of 2,152
How to Interpret 'show ip eigrp neighbors' Output
This 300-410 practice question tests your understanding of device management. Examine the command output carefully: the correct answer depends on what the output actually shows, not on general recall alone. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A network engineer runs the following command on Router R1:
R1# show ip eigrp neighbors
IP-EIGRP neighbors for process 100 H Address Interface Hold Uptime SRTT RTO Q Seq (sec) (ms) Cnt Num 0 192.168.1.2 Gi0/0 13 00:12:34 10 200 0 15 1 192.168.2.2 Gi0/1 10 00:10:22 12 200 0 22 2 10.10.10.2 Gi0/2 14 00:08:15 15 200 0 18
Based on this output, which statement is correct?
Quick Answer
The correct answer is that all EIGRP neighbors are operating normally, as the output shows no signs of instability or failure. This conclusion is drawn from the key fields in the show ip eigrp neighbors output: a Q count of 0 for each neighbor indicates no packets are queued for retransmission, while low SRTT and RTO values (10–15 ms and 200 ms, respectively) reflect stable, low-latency links. Additionally, the hold timers are all well below the default 15-second maximum, and the uptimes show sustained adjacency without flapping. On the Cisco CCNP ENARSI 300-410 exam, this command tests your ability to quickly assess neighbor health and identify issues like stuck-in-active or packet loss. A common trap is misreading the Hold column—it shows remaining seconds, not the configured hold time, so values near zero indicate a problem, not normal operation. Remember the memory tip: “Q zero, SRTT low, hold not zero—neighbor’s a hero.”
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
All EIGRP neighbors are operating normally.
Option B is correct because all neighbors show a Hold time above 10 seconds, SRTT values well below the default 200 ms threshold, RTO at the default 200 ms, and a Q count of 0. These values indicate stable adjacencies with no retransmissions or packet loss, which is normal EIGRP operation.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Neighbor 192.168.1.2 has a high SRTT indicating a slow link.
Why it's wrong here
SRTT of 10 ms is low, not high.
- ✓
All EIGRP neighbors are operating normally.
Why this is correct
All neighbors show normal hold timers, uptimes, and zero queued packets.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Neighbor 10.10.10.2 is experiencing packet loss due to high RTO.
Why it's wrong here
RTO of 200 ms is standard for this SRTT.
- ✗
The Q count of 0 indicates that EIGRP is not exchanging routes.
Why it's wrong here
Q count of 0 means no packets are queued, which is normal.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the misconception that a Q count of 0 means no routes are being exchanged, when in fact it simply indicates no packets are currently queued for transmission, which is normal for a stable EIGRP adjacency.
Detailed technical explanation
How to think about this question
EIGRP uses SRTT (Smoothed Round Trip Time) to dynamically calculate RTO (Retransmission Timeout) as 6 * SRTT, with a minimum of 200 ms. The Hold time is the time the router waits to hear a hello before declaring the neighbor down; values above 10 seconds (default hold time) indicate healthy adjacencies. In real-world scenarios, a Q count of 0 is expected during steady state, while a non-zero Q count would indicate queued packets awaiting transmission, often due to congestion or retransmissions.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A network engineer at a university connects two campus buildings via a fibre link. Both routers run OSPF, but no adjacency forms — even though both routers can ping each other. The engineer finds one router is in area 0 and the other in area 1. OSPF adjacency requires matching area numbers, hello/dead timers, and network type. IP reachability alone is not enough.
Quick reference
Routing Protocol Comparison
| Protocol | Metric | Max Hops | Algorithm | Type |
|---|---|---|---|---|
| RIP v2 | Hop count | 15 | Bellman-Ford | Distance vector |
| OSPF | Cost (bandwidth) | Unlimited | Dijkstra (SPF) | Link state |
| EIGRP | Composite metric | Unlimited | DUAL | Hybrid |
| IS-IS | Cost | Unlimited | Dijkstra | Link state |
| BGP | Policy / attributes | Unlimited | Path vector | Path vector |
RIP's 15-hop limit makes it unsuitable for large networks. OSPF and EIGRP dominate modern enterprise deployments.
What to study next
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FAQ
Questions learners often ask
What does this 300-410 question test?
Device Management — This question tests Device Management — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: All EIGRP neighbors are operating normally. — Option B is correct because all neighbors show a Hold time above 10 seconds, SRTT values well below the default 200 ms threshold, RTO at the default 200 ms, and a Q count of 0. These values indicate stable adjacencies with no retransmissions or packet loss, which is normal EIGRP operation.
What should I do if I get this 300-410 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jul 4, 2026
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