- A
The EIGRP process is operating normally with no signs of issues.
No input drops, no SIA events, and balanced packet counts indicate a healthy EIGRP process.
- B
There is a problem because more queries were sent than replies received.
Why wrong: A slight imbalance is normal; the numbers are close and within acceptable range.
- C
The input queue drops of 0 indicate that the router is not processing EIGRP packets.
Why wrong: Input queue drops of 0 mean no packets were dropped, which is good.
- D
The SIA-Queries count of 0 indicates that the network has experienced stuck-in-active events.
Why wrong: A count of 0 means no SIA events have occurred.
Question 1,381 of 2,152
How to Read show ip eigrp traffic Output
This 300-410 practice question tests your understanding of eigrp troubleshooting. 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 traffic
EIGRP-IPv4 Traffic Statistics for AS(100) Hellos sent/received: 5000/4995 Updates sent/received: 150/148 Queries sent/received: 10/8 Replies sent/received: 8/10 Acks sent/received: 300/298 Input queue high water mark: 10 Input queue drops: 0 SIA-Queries sent/received: 0/0 SIA-Replies sent/received: 0/0 Hello process ID: 123 PDM process ID: 124 Socket queue: 0/2000/10/0 (current/max/highest/drops) Input queue: 0/2000/10/0 (current/max/highest/drops)
Based on this output, which statement is correct?
Quick Answer
The correct answer is that the EIGRP process is operating normally with no signs of issues, as indicated by the balanced packet counts and zero input queue drops. When you interpret show ip eigrp traffic statistics, the key health indicators are the symmetry between sent and received packets—here, Hellos, Updates, Queries, and Replies all show near-equal numbers—and the absence of dropped packets or Stuck-in-Active (SIA) messages. On the Cisco CCNP ENARSI 300-410 exam, this command tests your ability to quickly diagnose EIGRP stability; a common trap is assuming any mismatch in Queries versus Replies signals a problem, but a slight imbalance (like 10 sent vs 8 received) is normal due to network timing. The critical red flags are input queue drops, SIA-Queries, or a large disparity in Hello counts, none of which appear here. Remember the memory tip: “Balanced counts, zero drops—EIGRP never stops.”
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
✓
The EIGRP process is operating normally with no signs of issues.
The output shows normal EIGRP operation: Hellos are exchanged nearly equally (5000 sent vs 4995 received), Updates, Queries, Replies, and Acks are balanced, and both input queue drops and SIA counters are zero. This indicates stable neighbor relationships and no packet loss or stuck-in-active events, confirming the EIGRP process is functioning without issues.
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.
- ✓
The EIGRP process is operating normally with no signs of issues.
Why this is correct
No input drops, no SIA events, and balanced packet counts indicate a healthy EIGRP process.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
There is a problem because more queries were sent than replies received.
Why it's wrong here
A slight imbalance is normal; the numbers are close and within acceptable range.
- ✗
The input queue drops of 0 indicate that the router is not processing EIGRP packets.
Why it's wrong here
Input queue drops of 0 mean no packets were dropped, which is good.
- ✗
The SIA-Queries count of 0 indicates that the network has experienced stuck-in-active events.
Why it's wrong here
A count of 0 means no SIA events have occurred.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the misconception that an imbalance in query/reply counts automatically indicates a problem, when in fact small differences are normal and only significant, persistent mismatches with other symptoms (like SIA events) indicate trouble.
Detailed technical explanation
How to think about this question
EIGRP uses Reliable Transport Protocol (RTP) to ensure reliable delivery of Updates, Queries, and Replies, while Hellos are sent unreliably. The counters for sent/received packets should be roughly balanced over time; a persistent mismatch (e.g., many more queries sent than replies received) could indicate a stuck-in-active condition or a neighbor that is not responding, but small differences are normal due to timing and packet aggregation. The input queue high water mark of 10 and drops of 0 confirm that the router's CPU is keeping up with EIGRP packet processing, avoiding backpressure.
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?
EIGRP Troubleshooting — This question tests EIGRP Troubleshooting — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The EIGRP process is operating normally with no signs of issues. — The output shows normal EIGRP operation: Hellos are exchanged nearly equally (5000 sent vs 4995 received), Updates, Queries, Replies, and Acks are balanced, and both input queue drops and SIA counters are zero. This indicates stable neighbor relationships and no packet loss or stuck-in-active events, confirming the EIGRP process is functioning without issues.
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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