- A
No SNMP traffic has been processed, which may indicate a configuration or connectivity issue.
All counters at zero suggest no SNMP communication has occurred.
- B
SNMP is working correctly with many successful requests.
Why wrong: Zero packets indicate no activity, not success.
- C
The router is sending many SNMP traps.
Why wrong: Trap counters are zero, so no traps are being sent.
- D
There are errors due to bad community names.
Why wrong: Error counters are zero, so no errors have occurred.
Question 968 of 2,152
Show SNMP Statistics — Zero Counters
This 300-410 practice question tests your understanding of snmp troubleshooting. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 to troubleshoot SNMP statistics:
R1# show snmp statistics
0 SNMP packets input 0 Bad SNMP version errors 0 Unknown community name 0 Illegal operation for community name supplied 0 Encoding errors 0 Number of requested variables 0 Number of altered variables 0 Get-request PDUs 0 Get-next PDUs 0 Set-request PDUs 0 Input queue drops 0 SNMP packets output 0 Too big errors 0 No such name errors 0 Bad values errors 0 General errors 0 Get-response PDUs 0 SNMP trap PDUs
What does this output indicate?
Quick Answer
The answer is that all zero counters indicate no SNMP traffic has been processed, pointing to a configuration or connectivity issue. This output from the `show snmp statistics` command reflects that the router has not received or sent any SNMP packets since the last counter reset or reload, meaning no SNMP requests, traps, or responses have been handled. On the Cisco CCNP ENARSI 300-410 exam, interpreting zero SNMP statistics tests your ability to distinguish between a properly idle system and a failure in SNMP communication—a common trap is assuming zero counters mean SNMP is working fine when they actually reveal a broken path, such as a missing `snmp-server community` command, an ACL blocking UDP ports 161/162, or a misconfigured SNMP manager. Remember the memory tip: “Zero is a hero only if you expect zero traffic; otherwise, it’s a zero for connectivity.”
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
✓
No SNMP traffic has been processed, which may indicate a configuration or connectivity issue.
The output shows all counters at zero, including SNMP packets input and output, which means the router has not processed any SNMP traffic. This typically indicates that SNMP is either not configured, the community strings are mismatched, or there is a network connectivity issue preventing SNMP messages from reaching the router. A correctly functioning SNMP agent would show non-zero counters for received requests or sent responses.
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.
- ✓
No SNMP traffic has been processed, which may indicate a configuration or connectivity issue.
Why this is correct
All counters at zero suggest no SNMP communication has occurred.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
SNMP is working correctly with many successful requests.
Why it's wrong here
Zero packets indicate no activity, not success.
- ✗
The router is sending many SNMP traps.
Why it's wrong here
Trap counters are zero, so no traps are being sent.
- ✗
There are errors due to bad community names.
Why it's wrong here
Error counters are zero, so no errors have occurred.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the misconception that zero error counters mean SNMP is working fine, when in fact zero counters for all input/output packets indicate no SNMP communication at all, not a healthy state.
Detailed technical explanation
How to think about this question
SNMP uses UDP ports 161 for polling and 162 for traps; the show snmp statistics command displays counters for all SNMP message types and errors as defined in RFC 1157 and RFC 3416. In a production network, even a lightly polled router will show non-zero values for Get-request PDUs and Get-response PDUs, so all zeros strongly suggest a Layer 3 reachability problem, ACL blocking UDP 161, or missing snmp-server community configuration. The counters are cumulative since the last reload or counter clear, so persistent zeros rule out transient issues.
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 practitioner preparing for the 300-410 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
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FAQ
Questions learners often ask
What does this 300-410 question test?
SNMP Troubleshooting — This question tests SNMP Troubleshooting — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: No SNMP traffic has been processed, which may indicate a configuration or connectivity issue. — The output shows all counters at zero, including SNMP packets input and output, which means the router has not processed any SNMP traffic. This typically indicates that SNMP is either not configured, the community strings are mismatched, or there is a network connectivity issue preventing SNMP messages from reaching the router. A correctly functioning SNMP agent would show non-zero counters for received requests or sent responses.
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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