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300-410 Practice Question: Given the following partial configuration on a…
Given the following partial configuration on a Cisco IOS-XE router:
logging host 10.1.1.1 transport tcp port 514 logging source-interface GigabitEthernet0/1 logging on
What is missing or incorrect in this configuration?
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 server must support TCP syslog, which is not defined in RFC 3164.
By default, syslog uses UDP port 514. When using TCP transport, the syslog server must be configured to accept TCP connections, and this is not a common configuration. The configuration itself is syntactically correct, but the question tests knowledge that TCP transport for syslog is non-standard and may not work with typical syslog servers.
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 configuration is correct; no changes are needed.
Why it's wrong here
While syntactically correct, using TCP for syslog is unusual and many syslog servers do not support it. The question expects recognition that this is a potential issue.
- ✗
The 'logging on' command is redundant because logging is enabled by default.
Why it's wrong here
'logging on' is required to enable logging; it is not redundant.
- ✓
The syslog server must support TCP syslog, which is not defined in RFC 3164.
Why this is correct
RFC 3164 defines syslog over UDP. TCP syslog is defined in RFC 6587 but is not universally supported. This configuration may fail if the server does not accept TCP.
- ✗
The port number should be 5140 for TCP syslog.
Why it's wrong here
Port 514 is the default for both UDP and TCP syslog; there is no separate port for TCP.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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