350-501 Architecture Practice Question
An SP is deploying EVPN to provide both L2 and L3 VPN services. Which advantage does EVPN offer over traditional VPLS for multi-homing?
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
✓
EVPN provides faster convergence and active-active multi-homing using Ethernet Segment Identifier (ESI) and Designated Forwarder (DF) election.
EVPN uses ESI-based multi-homing with BGP control plane, offering faster convergence and active-active load balancing compared to VPLS's active/standby model.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
EVPN uses a single MAC address per PE to reduce forwarding table size.
Why it's wrong here
EVPN still learns MAC addresses per PE; it does not reduce table size inherently.
- ✗
EVPN supports only active/standby redundancy, similar to VPLS.
Why it's wrong here
EVPN supports active/active and active/standby both.
- ✓
EVPN provides faster convergence and active-active multi-homing using Ethernet Segment Identifier (ESI) and Designated Forwarder (DF) election.
Why this is correct
EVPN's ESI and DF mechanism enable efficient multi-homing.
- ✗
EVPN requires MPLS in the core, whereas VPLS can use IP-only.
Why it's wrong here
Both EVPN and VPLS can use MPLS or IP core (e.g., EVPN-VXLAN).
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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