I have been reading a lot on EVPN A-A multihoming. The one obvious advantage is that the routing to orphaned host or layer3 subnet will not suffer a blackhole because both the leaves will advertise those hosts or subnets using their separate next hop addresses. The one big issue is convergence. With A-A multihoming, the entire convergence is dependent on BGP EVPN fabric where as in mlag the convergence is done on the data plane. Can someone explain a bit further about any technique used to speed up convergence in evpn A-A multihoming with IRB if one is to choose this model over evpn-mlag.
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