What are the types of primary and backup interfaces supported by interface backup

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Primary interfaces: Ethernet Layer 3 interface and subinterface, dialer interface, ATM interface, ISDN BRI interface, Async interface, cellular interface, PON interface, MP-group interface, MFR interface, FR subinterface, and serial interface and subinterface.

Backup interfaces: Ethernet Layer 3 interface and subinterface, dialer interface, ATM interface, BRI interface, Async interface, cellular interface, MP-group interface, MFR interface and subinterface, and serial interface and subinterface.

On the AR120&AR150&AR160&AR200 device, primary and backup interfaces cannot be ISDN BRI interfaces, PON interfaces, or Async interfaces.

Other related questions:
Which types of active interfaces and standby interfaces are supported by the AR router
Types of active interfaces supported by the AR routers: Layer 3 Ethernet interfaces and their sub-interfaces, dialer interfaces, ATM interfaces, ISDN BRI interfaces, asynchronous interfaces, cellular interfaces, PON interfaces, MP-group interfaces, MFR interfaces, FR sub-interfaces, and serial interfaces and their sub-interfaces Types of standby interfaces supported by the AR routers: Layer 3 Ethernet interfaces and their sub-interfaces, dialer interfaces, ATM interfaces, BRI interfaces, asynchronous interfaces, cellular interfaces, MP-group interfaces, MFR interfaces, FR sub-interfaces, and serial interfaces and their sub-interfaces. ISDN BRI interfaces, PON interfaces, and asynchronous interfaces cannot be used as active or standby interfaces on AR120&AR150&AR160&AR200 series.

Whether the AR router supports interface backup
AR routers support interface backup.

Networking types supported by NDMP backup
NDMP backup supports two networking types: 2-way networking and 3-way networking. For details, see http://support.huawei.com/ehedex/hdx.do?docid=DOC1000059471&id=ndmp_ref_concpt_v3r2c10.

Which interface backup modes are supported by AR routers
AR routers support two interface backup modes: active/standby mode and load balancing mode. V200R001C01 and later versions support three association modes: association between interface backup and NQA, association between interface backup and BFD, and association between interface backup and routing.

Backup storage types supported in public cloud scenarios
Only the Simple Storage Service (S3) can be used as backup storage to save tenants' data in public cloud scenarios.

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