What is NQA association mechanism of the AR router

NQA association mechanism:
Association indicates that NQA provides detection and notifies the associated module of the detection result. Then the associated module processes services based on the detection result. NQA can be associated with VRRP, static route, backup interface, IGMP proxy, IP address pool, DNS server, and PBR.
Static route is used as an example:
A static route with the next hop address of 192.168.0.88 is configured. If the next hop address of 192.168.0.88 is reachable, the static route is valid. If the next hop address of 192.168.0.88 is unreachable, the static route is invalid. After association is configured, the static route can be determined in real time. If NQA detects that the next hop address of 192.168.0.88 is unreachable, NQA notifies the static route module. The static route module determines that the static route is invalid.

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