Visit the following links for more information:
- Support Requirements for ASR Components: https://docs.microsoft.com/en-us/azure/site-recovery/site-recovery-support-matrix-azure-to-azure
- Mapping networks between two Azure regions: https://docs.microsoft.com/en-us/azure/site-recovery/site-recovery-network-mapping-azure-to-azure
- Network mapping for Hyper-V VM replication with ASR: https://docs.microsoft.com/en-us/azure/site-recovery/site-recovery-network-mapping
- VM network interfaces for on-premises to Azure scenarios: https://docs.microsoft.com/en-us/azure/site-recovery/site-recovery-manage-network-interfaces-on-premises-to-azure