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بروتوكول EIGRP يرسل عدة بكتات منها بكت (Query) لماذا يرسلها?
query is used to query routes from neighbors (multicast; unicast attempted up to16 times if multicast gets no response)
When a router is performing route computation and does not have a feasible successor, it sends a query packet to its neighbors, asking if they have a successor to the destination. Queries are normally multicast but an be retransmitted as unicast packets in certain cases; they are sent reliably.