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.

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