When a router advertises a failed route as an infinite metric to prevent routing loops, this practice is called

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Multiple Choice

When a router advertises a failed route as an infinite metric to prevent routing loops, this practice is called

Route poisoning is the process of advertising a route with an infinite metric to signal that it is unreachable. This quickly invalidates the bad route across the network, causing routers to remove it from their tables and preventing loops that could arise from stale information. It directly matches the idea of telling neighbors that a route has failed by using an infinite value. Split horizon avoids sending routing information back out the same interface it came from, hold-down delays accepting changes to a route, and poison reverse is a variation that uses an infinite metric specifically back to the neighbor that advertised the route. But the general action described—advertising a failed route as unreachable—fits route poisoning.

Route poisoning is the process of advertising a route with an infinite metric to signal that it is unreachable. This quickly invalidates the bad route across the network, causing routers to remove it from their tables and preventing loops that could arise from stale information. It directly matches the idea of telling neighbors that a route has failed by using an infinite value.

Split horizon avoids sending routing information back out the same interface it came from, hold-down delays accepting changes to a route, and poison reverse is a variation that uses an infinite metric specifically back to the neighbor that advertised the route. But the general action described—advertising a failed route as unreachable—fits route poisoning.

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