hardMultiple ChoiceObjective-mapped
300-410 Practice Question: An engineer configures an EEM applet to react to…
An engineer configures an EEM applet to react to BGP prefix changes using the event syslog pattern 'BGP-5-ADJCHANGE'. The applet sends a custom SNMP trap. The BGP session between two routers is established, but when a route is withdrawn due to next-hop-self requirement for iBGP, the EEM applet does not trigger. Which is the most likely explanation?
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 BGP-5-ADJCHANGE syslog is only generated for session state changes, not for individual route updates.
The BGP-5-ADJCHANGE syslog message is generated only when the BGP session state changes (e.g., from Established to Idle or vice versa). It is not generated for individual prefix updates or withdrawals. When a route is withdrawn due to next-hop-self requirement, the BGP session remains established, so no ADJCHANGE event occurs. The EEM applet will not trigger because the syslog pattern does not match any generated message.
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 BGP-5-ADJCHANGE syslog is only generated for session state changes, not for individual route updates.
Why this is correct
Correct. The syslog message is only for session state transitions, not for prefix changes.
- ✗
The EEM applet must be configured with 'event bgp' to monitor BGP prefix changes.
Why it's wrong here
EEM does not have a native 'event bgp' trigger; it relies on syslog or other methods.
- ✗
The next-hop-self requirement causes a BGP notification that generates a different syslog pattern.
Why it's wrong here
Next-hop-self is a configuration issue that may cause route withdrawal, but not a session reset.
- ✗
The EEM applet requires the 'event manager directory' to be set for SNMP traps.
Why it's wrong here
SNMP traps can be sent without setting a directory; the issue is the trigger event.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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