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300-410 Practice Question: An engineer configures IP SLA to track a route to…
An engineer configures IP SLA to track a route to a server in a VRF. Router R1 has:
ip sla 6
icmp-echo 10.10.10.10 source-ip 192.168.1.1 frequency 10
ip sla schedule 6 life forever start-time now track 6 ip sla 6 reachability ip route vrf BLUE 0.0.0.0 0.0.0.0 192.168.1.2 track 6
But the route is never installed in the VRF routing table. Show output:
show ip route vrf BLUE | include 0.0.0.0 % No default route found
What is the root 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 IP SLA is not configured with the vrf BLUE option, so the probe is sent in the global table and cannot reach the server in the VRF.
The IP SLA probe is not VRF-aware. By default, IP SLA operates in the global routing table. To track a route in a VRF, the IP SLA must be configured with the vrf keyword. The correct answer is that the IP SLA is not associated with the VRF, so the probe fails or is sent in the wrong context.
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 IP SLA is not configured with the vrf BLUE option, so the probe is sent in the global table and cannot reach the server in the VRF.
Why this is correct
The IP SLA must be configured with 'vrf BLUE' to send probes within the VRF; otherwise, the track will not work correctly.
- ✗
The source IP 192.168.1.1 is not in the VRF BLUE routing table.
Why it's wrong here
Even if the source IP is in the VRF, the probe still needs the vrf keyword to be sent in the VRF context.
- ✗
The track 6 is not supported for VRF routes.
Why it's wrong here
Track with IP SLA is supported for VRF routes if the IP SLA is VRF-aware.
- ✗
The IP SLA schedule must be configured with the vrf keyword.
Why it's wrong here
The schedule command does not have a vrf keyword; it is configured under the IP SLA configuration.
Go deeper
Related to this question
Learn chapter
OSPF Route Summarization and Filtering
Key term
MPLS Layer 3 VPN
A technology that uses Multiprotocol Label Switching to create secure, scalable virtual private networks that connect multiple sites at the network layer, where the service provider manages routing between customer sites.
Key term
IP SLA for Path Control
IP SLA for Path Control is a Cisco technology that uses active network measurements to dynamically influence routing decisions and redirect traffic along a preferred path when network conditions change.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 300-410 practice question is part of Courseiva's free Cisco certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 300-410 exam.