hardMultiple ChoiceObjective-mapped
300-410 Practice Question: Is troubleshooting a router that is generating…
A network engineer is troubleshooting a router that is generating excessive syslog messages, filling up the local logging buffer and causing performance issues. The engineer wants to reduce the volume of messages sent to the remote syslog server while still capturing critical alerts locally. The current configuration includes 'logging buffered 4096 debugging' and 'logging host 10.1.1.100'. What is the best approach?
⚠ Common exam trap
Cisco often tests the distinction between 'logging buffered' (local logging) and 'logging trap' (remote logging severity), and the trap here is that candidates may confuse which command controls local vs. remote syslog filtering, leading them to incorrectly modify the local buffer command (Option A) instead of the remote trap level.
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
✓
Configure 'logging trap errors' under the logging host configuration to limit remote messages to severity 3 and above.
The 'logging trap errors' command limits the severity of syslog messages sent to the remote syslog server (10.1.1.100) to level 3 (errors) and above, reducing the volume of remote messages while leaving the local 'logging buffered 4096 debugging' unchanged to capture critical alerts locally. This directly addresses the requirement to reduce remote syslog traffic without affecting local logging of critical alerts.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Change 'logging buffered 4096 debugging' to 'logging buffered 4096 errors' to reduce local messages.
Why it's wrong here
Incorrect because the goal is to reduce remote messages, not local; changing local buffer would lose detail needed for troubleshooting.
- ✓
Configure 'logging trap errors' under the logging host configuration to limit remote messages to severity 3 and above.
Why this is correct
Correct because 'logging trap errors' sets the remote syslog threshold to severity 3 (errors), reducing volume while keeping local debugging intact.
- ✗
Remove the 'logging buffered' command to stop all local logging.
Why it's wrong here
Incorrect because this would eliminate local logging entirely, which is not desired.
- ✗
Add 'logging rate-limit 10' to limit the number of messages per second.
Why it's wrong here
Incorrect because rate-limiting affects all syslog output (local and remote) and may drop important messages; it does not selectively reduce remote volume.
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