What is the meaning of this command in PBR ---- Set IP next-hop availability.?

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Below Example -

route-map REDIRECT permit 20
match ip address WEB
set ip next-hop verify-availability 192.168.30.10 20 track 1
set ip next-hop 10.8.12.20

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In this case  the router checks  that the next hop address is reachable before setting the next hop.

If PBR confirms that the specified next hop is not available then it does not set the next hop to that value.

It should have 192.168.30.10 rechable to use 10.8.12.20 next hop.

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