300-515 · Question #114
A service provider that implements large L2VPNs received a request to implement EVPN Native to improve a customer's Layer 2 communication across the core. MPLS is configured in the core to support…
The correct answer is D. Configure the customer EVPN to advertise MAC addresses over the core. EVPN–Native relies on BGP to distribute MAC–IP bindings (via Type-2 MAC routes) so that each PE’s software MAC table stays synchronized without flooding. Enabling MAC advertisement in the EVPN control plane is the key step: it tells each PE to learn and push customer MAC…
Question
A service provider that implements large L2VPNs received a request to implement EVPN Native to improve a customer’s Layer 2 communication across the core. MPLS is configured in the core to support VPN transport. Which action must the engineer take as part of the implementation?
Options
- AConfigure MPLS TE between PEs to support MAC address learning over the core where EVPN is
- BConfigure a pseudowire between the CEs to allow for Layer 2 to be extended beyond the EVPN
- CConfigure EVPN to support IP traffic only and disable MPLS to improve efficiency.
- DConfigure the customer EVPN to advertise MAC addresses over the core.
How the community answered
(33 responses)- A9% (3)
- B3% (1)
- C6% (2)
- D82% (27)
Explanation
EVPN–Native relies on BGP to distribute MAC–IP bindings (via Type-2 MAC routes) so that each PE’s software MAC table stays synchronized without flooding. Enabling MAC advertisement in the EVPN control plane is the key step: it tells each PE to learn and push customer MAC entries into MP-BGP and thus across the MPLS core.
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