Q31
Single choice

Refer to the exhibit. The VXLAN fabric with BGP EVPN control plane experiences connectivity issues. The hosts in the initial deployed VLAN fail to communicate. The environment is configured as follows:
1. Private BGP ASN 65122 is used across the whole fabric.
2. Each leaf node has iBGP peers with each spine node with default values.
3. Address family L2VPN EVPN is enabled on all leaf and spine BGP speakers.
Which BGP feature is required on the spines for all EVPN routes to be advertised throughout the VXLAN fabric?