AR router support for the VRRP feature

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

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

Does the AR router support the NAT function
All Huawei AR routers support NAT.

Do VRRP configuration and NQA configuration on an AR router conflict
On an AR router, use VRRP and NQA association to detect uplink faults and switch over between master/backup gateways. The configurations do not conflict. For details about the configuration, see the URL: Example for Configuring Association Between VRRP and NQA to Monitor the Uplink Status.

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.

Example of configuring VRRP active/standby backup on an AR router
The roadmap of configuring VRRP active/standby backup on an AR router to implement gateway redundancy is as follows: 1. Configure IP addresses and routing protocols for different device interfaces to enable network-layer connection among different devices. 2. Configure a VRRP group on 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 gateway redundancy. Configure a VRRP group. # Create VRRP 1 on Router A, set its priority to 120, and set the preemption delay to 20s. [RouterA] interface gigabitethernet 2/0/0 [RouterA-GigabitEthernet2/0/0] vrrp vrid 1 virtual-ip 10.1.1.111 //Configure a virtual IP address. [RouterA-GigabitEthernet2/0/0] vrrp vrid 1 priority 120 //Set priority to 120. [RouterA-GigabitEthernet2/0/0] vrrp vrid 1 preempt-mode timer delay 20 //Set the preemption delay to 20s. [RouterA-GigabitEthernet2/0/0] quit # Create VRRP 1 on Router B, and set its priority to a default value 100. [RouterB] interface gigabitethernet 2/0/0 [RouterB-GigabitEthernet2/0/0] vrrp vrid 1 virtual-ip 10.1.1.111 [RouterB-GigabitEthernet2/0/0] quit For details about the configuration, see the URL: Example for Configuring a VRRP Group in Active/Standby Mode.

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