hardMultiple ChoiceObjective-mapped
300-410 Practice Question: A router is configured with PBR using a route-map…
A router is configured with PBR using a route-map that sets the next-hop to 10.0.0.2 for traffic from subnet 192.168.1.0/24. The route-map is applied inbound on interface GigabitEthernet0/0. The engineer also configures 'ip policy route-map' on the same interface. The engineer notices that PBR is working for TCP traffic but not for UDP traffic from the same subnet. What is the most likely 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 ACL in the route-map is configured to match only TCP traffic, so UDP packets are not policy-routed.
PBR processes all IP traffic regardless of protocol, but if the ACL in the route-map uses 'tcp' as the protocol, it will only match TCP packets. The engineer likely configured the ACL to match only TCP, inadvertently excluding UDP. The ACL should use 'ip' to match all protocols.
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 ACL in the route-map is configured to match only TCP traffic, so UDP packets are not policy-routed.
Why this is correct
ACL protocol matching is specific; using 'tcp' excludes UDP.
- ✗
UDP traffic is not supported by PBR.
Why it's wrong here
PBR supports all IP protocols.
- ✗
The next-hop 10.0.0.2 does not have a route for UDP traffic.
Why it's wrong here
Routing is based on destination IP, not protocol.
- ✗
The route-map is missing a 'set ip next-hop' command for UDP.
Why it's wrong here
The set command applies to all matched traffic; the issue is in the match criteria.
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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.