hardMultiple ChoiceObjective-mapped
300-410 Practice Question: An engineer is troubleshooting a router that is…
An engineer is troubleshooting a router that is not sending syslog messages to the remote server at 192.168.1.10. The configuration includes 'logging host 192.168.1.10' and 'logging trap 7'. The router can ping 192.168.1.10. The engineer runs 'show logging' and sees 'Syslog logging: enabled (0 messages dropped, 0 messages rate-limited, 0 flushes, 0 overruns)'. What is the most likely cause?
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 'logging source-interface' is configured to an interface that is administratively down.
The 'show logging' output shows that syslog is enabled but no messages are being sent. A common reason is that the 'logging source-interface' is set to an interface that is down or not reachable, causing the router to use an incorrect source IP that the server may filter or that routing may not support. Alternatively, the server may be configured to accept messages only from specific source IPs.
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 'logging source-interface' is configured to an interface that is administratively down.
Why this is correct
Correct because if the source interface is down, the router cannot use its IP address, and the syslog server may drop messages from an unexpected source IP or the packets may be routed incorrectly.
- ✗
The 'logging on' command is missing from the configuration.
Why it's wrong here
Incorrect because 'show logging' indicates syslog is enabled; if 'logging on' were missing, it would show 'logging disabled'.
- ✗
The syslog server is using TCP, but the router is configured for UDP.
Why it's wrong here
Incorrect because by default, the router uses UDP; if the server expects TCP, the router would still send UDP packets, but the server would not receive them. However, the 'show logging' output would still show messages as sent (no drops), so this is less likely than a source-interface issue.
- ✗
The logging buffer is full, preventing new messages from being generated.
Why it's wrong here
Incorrect because the buffer being full does not stop the router from sending messages; it only affects local storage.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 300-410 practice question is part of Courseiva's free Cisco certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 300-410 exam.