A method for quick reconfiguration of routing in the event of a fault in a port of a switch including a plurality of ports, persistent memory for maintaining data corresponding to a routing table, and working memory for working on data corresponding to a routing table, includes: transmitting a first message to indicate a fault; independently updating the routing data only in the working memory by replacing an identifier of the port with the fault with an identifier of an operational port, the identifier of the operational port being selected locally; and transmitting a second message to indicate that the table was updated.