The MVPN AD next-hop-self policies and the vpn-ipv4 policy must be imported under BGP on ABR routers.
In addition, for unicast vpn-ipv4 connectivity, the enable-inter-as-vpn command must be configured under BGP.
A:Dut-B>config>router>bgp# info
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family ipv4 ipv6 vpn-ipv4 vpn-ipv6 mvpn-ipv4 mcast-vpn-ipv4 mvpn-ipv6 mcast-vpn-ipv6
vpn-apply-import
vpn-apply-export
connect-retry 10
keepalive 10
hold-time 30
enable-inter-as-vpn
rapid-update vpn-ipv4 vpn-ipv6 mvpn-ipv4 mcast-vpn-ipv4 mvpn-ipv6 mcast-vpn-ipv6
group "ibgp_A"
next-hop-self
cluster 10.20.1.2
export "mod_nh_10.20.1.2" "mod_nh_spmsi_10.20.1.2" "mod_nh_vpn_10.20.1.2"
neighbor 10.20.1.1
local-address 10.20.1.2
med-out 100
peer-as 100
exit
exit
group "ibgp_D"
next-hop-self
cluster 10.180.4.2
export "mod_nh_10.20.1.2" "mod_nh_spmsi_10.20.1.2" "mod_nh_vpn_10.20.1.2"