101 · Question #649
What should the administrator investigate first to address this traffic slownes?
The correct answer is C. Interface 1.2 shows 9.2K errors. Interface errors at the physical layer are the highest-priority item to investigate first because they indicate a fundamental connectivity problem affecting all traffic passing through that interface.
Question
What should the administrator investigate first to address this traffic slownes?
Exhibit
Options
- AThe virtual server indicates 14 slow connections killed
- BThe pool member is unchecked
- CInterface 1.2 shows 9.2K errors
- DThe pool shows no current connections.
How the community answered
(56 responses)- A4% (2)
- B11% (6)
- C80% (45)
- D5% (3)
Why each option
Interface errors at the physical layer are the highest-priority item to investigate first because they indicate a fundamental connectivity problem affecting all traffic passing through that interface.
Slow connections being killed by BIG-IP is a downstream symptom of the slowness rather than a root cause, and is lower priority than a physical interface error.
An unchecked pool member affects only the health-monitoring display for that specific member and does not explain broad traffic slowness across the interface.
9,200 errors on Interface 1.2 indicate a Layer 1 or Layer 2 physical problem such as a duplex mismatch, faulty cable, or failing NIC, which would directly cause widespread packet loss and traffic slowness. Physical-layer errors are always investigated first in a layered troubleshooting approach because they degrade all traffic on that interface and represent the most likely systemic root cause.
No current connections on the pool is a result or symptom of a problem, not a root cause to investigate before physical-layer errors.
Concept tested: BIG-IP interface error troubleshooting and OSI layer priority
Source: https://support.f5.com/csp/article/K05524508
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