Exam JN0-683 topic 3 question 23 discussion

Looking at the key differences between EVPN-signaled VXLAN and multicast-signaled VXLAN, the two correct answers are: A. An EVPN-signaled VXLAN is less resource intensive. C. An EVPN-signaled VXLAN can perform autodiscovery of VTEPs using BGP. Let me explain why: A is correct because EVPN-signaled VXLAN eliminates the need for multicast in the underlay network. Multicast-based VXLAN requires multicast protocols like PIM to be configured throughout the network, which consumes more resources and is more complex to manage. C is correct because EVPN uses BGP for VTEP discovery and MAC address distribution. BGP EVPN provides a control plane mechanism for VXLAN that enables auto-discovery of VTEPs, distribution of tenant MAC addresses, and establishment of overlay tunnels. B is incorrect because EVPN uses BGP, not IS-IS, for VTEP autodiscovery. D is incorrect because EVPN-signaled VXLAN actually provides faster and more complete convergence compared to multicast-signaled VXLAN, not slower.