300-515 · Question #145
How does an EVPN manage data plane learning?
The correct answer is A. When customer traffic arrives at the PE router, the MAC table learns the source C-MACs. In EVPN, data plane MAC learning occurs when customer frames arrive at the PE. The PE inspects the source MAC (C-MAC) of the incoming frame and installs it in its MAC-VRF table. This enables proper forwarding within the EVPN service, complementing the control-plane MAC learning…
Question
How does an EVPN manage data plane learning?
Options
- AWhen customer traffic arrives at the PE router, the MAC table learns the source C-MACs.
- BWhen remote PEs in the core network receive label-encapsulated traffic, they learn the
- CWhen a C-MAC moves within the EVPN service, the PE router relearns its new B-MAC after a
- DWhen the core device learns the MAC address of a remote site, it also learns the Ethernet bundle
How the community answered
(50 responses)- A90% (45)
- B2% (1)
- C6% (3)
- D2% (1)
Explanation
In EVPN, data plane MAC learning occurs when customer frames arrive at the PE. The PE inspects the source MAC (C-MAC) of the incoming frame and installs it in its MAC-VRF table. This enables proper forwarding within the EVPN service, complementing the control-plane MAC learning done via BGP.
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