What interfaces are provided on the AR that support VRRP

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Interfaces that support VRRP include the Layer 3 Ethernet interface, VLANIF interface, Layer 3 Eth-Trunk interface, Ethernet subinterface, and Eth-Trunk subinterface.

Other related questions:
Which types of interfaces support VRRP on the AR router
Interfaces that support VRRP are as follows: Layer 3 Ethernet interfaces, VLANIF interfaces, Layer 3 Eth-Trunks, Ethernet sub-interfaces, and Eth-Trunk sub-interfaces.

AR router support for the VRRP feature
AR router support for the VRRP feature: All AR routers support VRRP. At present, there is no difference between AR router support for VRRP.

Example of configuring a dot1Q termination sub-interface on an AR router to support VRRP
An example of configuring a dot1Q termination sub-interface on an AR router to support VRRP is as follows: The roadmap of configuring a dot1Q termination sub-interface to support VRRP and implement gateway redundancy is as follows: 1. Configure IP addresses and routing protocols for different device interfaces to enable network-layer routers to be reachable. 2. Configure a VRRP group on sub-interfaces of Router A and Router B, respectively. Configure a high priority and set preemption delay to 20s on Router A and configure Router A as a master device to bear and forward traffic. Configure a low priority and configure Router B as a backup device to implement redundancy. For details about the configuration, see the URL: Example for Configuring VRRP on a Dot1q Termination Sub-interface.

Whether VRRP on the AR router supports authentication
VRRPv2 supports plain-text authentication and MD5 authentication modes. VRRPv3 does not support authentication.

Whether the management interface of the USG6000 supports VRRP
The USG6000 management interface supports configuring VRRP.

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