- In a computer network that uses the Routing Information Protocol (RIP) or other distance vectorroutingprotocols, a poison reverse is a way in which a gatewaynode tells its neighbor gateways that one of the gateways is no longer connected. To do this, the notifying gateway sets the number of hops to the unconnected gateway to a number that indicates "infinite" (meaning "You can't get there"). Since RIP allows up to 15 hops to another gateway, setting the hop count to 16 would mean "infinite."
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