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300-410 Practice Question: A router is configured to send syslog messages to…
A router is configured to send syslog messages to two servers: 10.1.1.100 and 10.1.1.200. The engineer notices that only server 10.1.1.100 is receiving messages. The configuration shows 'logging host 10.1.1.100' and 'logging host 10.1.1.200'. Both servers are reachable via ping. 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 syslog service on 10.1.1.200 is not running or is blocked by a firewall.
Cisco IOS allows multiple logging hosts, but each must be configured with a separate 'logging host' command. If the second server is not receiving messages, it may be because the 'logging trap' level for that specific host is set to a higher severity (e.g., 'logging host 10.1.1.200 trap errors') that filters out most messages, or the server is not listening. However, a common mistake is that the second host is configured with a different port or protocol that is not supported. But the most typical cause is that the second server's syslog service is not running or is firewalled.
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 syslog service on 10.1.1.200 is not running or is blocked by a firewall.
Why this is correct
Correct because if the server is not listening or traffic is blocked, messages will not be received even though the router sends them.
- ✗
The router can only send to one syslog server at a time.
Why it's wrong here
Incorrect because Cisco IOS supports multiple syslog servers simultaneously.
- ✗
The 'logging host 10.1.1.200' command is missing the 'transport udp' keyword.
Why it's wrong here
Incorrect because UDP is the default transport; specifying it is optional.
- ✗
The second server is configured with a different severity level using 'logging trap' under the host.
Why it's wrong here
Incorrect because while possible, this would still allow some messages (e.g., emergencies) to be sent; the question implies no messages are received at all.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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