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300-410 Practice Question: Which TWO configuration steps are required to…
Which TWO configuration steps are required to enable VRF-Lite on a Cisco IOS-XE router for a customer with two separate routing domains? (Choose TWO.)
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
✓
Create the VRF using the 'vrf definition <vrf-name>' command and assign a route distinguisher with the 'rd' command.
The two essential steps are: creating the VRF with a route distinguisher using 'vrf definition <name>' and 'rd <value>', and assigning interfaces to the VRF with 'vrf forwarding <name>' under the interface. The other options are incorrect: 'ip vrf <name>' is legacy syntax but still works; however, 'rd' is required. Route targets are for MPLS VPN, not VRF-Lite. Import/export maps are optional. BGP is not mandatory.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Create the VRF using the 'vrf definition <vrf-name>' command and assign a route distinguisher with the 'rd' command.
Why this is correct
This defines the VRF and its route distinguisher, which is mandatory for VRF-Lite.
- ✓
Assign the VRF to an interface using the 'vrf forwarding <vrf-name>' command under interface configuration.
Why this is correct
This binds the interface to the VRF, enabling traffic separation.
- ✗
Configure route target import/export statements under the VRF.
Why it's wrong here
Route targets are used in MPLS VPN environments, not required for VRF-Lite.
- ✗
Apply an import map and export map to control route redistribution.
Why it's wrong here
Import/export maps are optional and not a required step for basic VRF-Lite.
- ✗
Enable BGP to exchange routes between VRFs.
Why it's wrong here
BGP is not required for VRF-Lite; static or IGP routing can be used.
Go deeper
Related to this question
Learn chapter
OSPF Route Summarization and Filtering
Key term
LDP Protocol
LDP, or Label Distribution Protocol, is a protocol that routers use to automatically exchange labels that enable MPLS (Multiprotocol Label Switching) to create fast, efficient paths for data packets across a network.
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.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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