Hi dear,
The geographic redundancy system is also called active/standby DR(disaster recovery) system.
A system and its backup system are deployed in different geographic regions to implement geographic redundancy, preventing system data from being damaged by disasters.
1+1 active/standby mode is applied on the dispatching system, eOMC or eCN to achieve geographic redundancy, enabling reliability.
For principles of more and detailed deployment scenarios, please refer to the link::
https://support.huawei.com/hedex/hdx.do?docid=EDOC1100017049&id=EN-US_TOPIC_0106882266&text=Principles&lang=en