CCNP Network Assurance Practice Question
A network engineer has configured a Cisco IOS IP SLA operation with an ICMP echo probe to monitor reachability of a remote branch router. The engineer wants to automatically remove a static route from the routing table when the probe fails. Which feature should be configured to achieve this?
⚠ Common exam trap
The trap here is assuming that IP SLA alone can modify the routing table; it requires object tracking to influence route installation.
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
✓
IP SLA tracking object with a threshold and a static route referencing the track object
The correct solution is to create an IP SLA tracking object and reference it in the static route. When the IP SLA operation fails, the track object goes down, and the static route is removed from the routing table. This provides automatic failover without manual intervention. Other options either do not remove the route or require additional scripting.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Embedded Event Manager (EEM) applet that triggers on IP SLA failure and removes the route
Why it's wrong here
While EEM can react to IP SLA events, it is not the native mechanism for route removal. Using EEM would require scripting and does not integrate with the routing table as directly as object tracking. The correct approach is to use track objects, which are designed for this purpose.
- ✗
Policy-Based Routing (PBR) with a route map that matches the IP SLA state
Why it's wrong here
PBR can influence forwarding decisions based on match criteria, but it does not remove routes from the routing table. The requirement is to remove a static route, not to override it with a policy. PBR would not achieve the desired automatic route withdrawal.
- ✗
Floating static route with a higher administrative distance that is always present
Why it's wrong here
A floating static route only becomes active if the primary route is removed. However, it does not remove the primary route; it serves as a backup. The scenario requires the primary route to be removed upon IP SLA failure, which is accomplished with object tracking, not by adding a floating static route.
- ✓
IP SLA tracking object with a threshold and a static route referencing the track object
Why this is correct
Configuring a tracking object (track 1 ip sla 1 reachability) and associating it with the static route (ip route 10.1.1.0 255.255.255.0 192.168.1.2 track 1) allows the router to remove the route when the IP SLA operation fails. This provides automatic failover based on reachability.
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official Cisco exam blueprint
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