Whether the AR router supports interface backup

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AR routers support interface backup.

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.

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.

Does the AR support the web
Starting from V200R002C01, the AR supports the web platform. You can use the web platform to manage and maintain AR routers on the GUI. V200R005C20SPC200 is recommended. For details, see Access Router Product Information Center.

Check whether the AR routers support to add optical interface to the bridge group.
The AR router bridge supports ethernet link, MP, PPP, FR, ATM, PPPoE, PPPoFR, PPPoEoA, HDLC.

Whether AR router can achieve NAT Server redundancy backup function?
AR router does not support NAT Server redundancy backup function.

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