COMMUNICATION NODE DEVICE

摘要

PROBLEM TO BE SOLVED: To effectively utilize memory capacity of a routing table (cache memory) provided with each channel interface of a communication node device and to improve the retrieval hit rate of routing information. SOLUTION: Channel interfaces 1-1 to 1-n of a communication node device detect a connection interrupt flag included in a received packet to eliminate an unnecessary routing information entry from a sub routing table. In the case of downloading the routing information entry from a main routing table 55 because no object entry is in existence in the sub routing table at reception of a packet, when a connection setup flag is set to the received packet, the packet is registered as an entry with high priority entry.