350-501 MPLS and Segment Routing Practice Question
In EVPN with Integrated Routing and Bridging (IRB), which type of interface is used to connect the bridge domain to the IP-VRF for inter-subnet forwarding?
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
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IRB interface
IRB uses an Integrated Routing and Bridging interface (IRB interface) or BVI (Bridge Virtual Interface) to route between VLANs within the EVPN.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
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IRB interface
Why this is correct
IRB interface is the correct term for EVPN IRB.
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BD interface
Why it's wrong here
BD interface is a bridge domain interface, not specifically for IRB.
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L3VPN interface
Why it's wrong here
L3VPN interface is used for MPLS L3VPN.
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SVI
Why it's wrong here
SVI is a Layer 3 interface, but IRB specifically uses IRB interfaces.
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