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300-410 Practice Question: Consider this partial configuration: ``` ip vrf…

Consider this partial configuration: ```

ip vrf CUSTOMER_B

rd 65000:1 route-target export 65000:1 route-target import 65000:1 ``` What statement is true about this VRF configuration?

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 VRF is correctly configured for VRF-Lite with a unique RD and optional route-targets.

In VRF-Lite, route-targets are not strictly required because there is no MP-BGP exchange. However, they are used for interoperability and to define import/export policies if needed. The RD is mandatory to create the VRF.

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 VRF will not function because route-targets are mandatory for VRF-Lite.

    Why it's wrong here

    Incorrect. Route-targets are optional in VRF-Lite; they are used for route leaking but not required for basic operation.

  • ✓

    The VRF is correctly configured for VRF-Lite with a unique RD and optional route-targets.

    Why this is correct

    This is correct. The RD is required, and route-targets are optional but often configured for consistency.

  • ✗

    The RD must match the route-target value exactly.

    Why it's wrong here

    Incorrect. There is no requirement for the RD to match the route-target; they are independent.

  • ✗

    The VRF will only work if 'vrf forwarding' is applied to an interface.

    Why it's wrong here

    Incorrect. While the VRF is defined, it becomes active only when applied to an interface, but the configuration itself is valid.

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Same concept, more angles

1 more way this is tested on 300-410

These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.

Variation 1. Examine the following configuration: ``` interface GigabitEthernet0/1 ip vrf forwarding CUSTOMER_C ip address 10.1.1.1 255.255.255.0 no shutdown ``` What is missing from this configuration to ensure that routes from VRF CUSTOMER_C are properly isolated?

medium
  • A.A route-target import/export statement under the VRF definition.
  • B.The command 'ip vrf forwarding CUSTOMER_C' must be preceded by 'no ip address' to avoid IP address removal.
  • ✓ C.Nothing is missing; this configuration provides proper VRF isolation.
  • D.A 'vrf definition CUSTOMER_C' must be used instead of 'ip vrf' on newer IOS versions.

Why C: The configuration is complete for basic VRF-Lite. VRF isolation is achieved by associating the interface with a VRF, which creates a separate routing table. No additional commands are required for isolation.

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.