Patent ID: 8031611

Claim:
A method of generating an IP traffic flow on a time-bucket basis by collecting IP packets from an IP line, the method comprising: performing a first operation in which a current time is checked and it is determined whether a time bucket has been changed with reference to the current time; performing a second operation in which it is determined whether a collected IP packet exists in a IP packet collecting unit, and the collected IP packet is fetched from the IP packet collecting unit if the collected IP packet exists; performing a third operation in which a previous time bucket flow table (PTBFT) is processed when it is determined that the time bucket has been changed and a time bucket change state value has been set, wherein the PTBFT stores temporary traffic flows generated in a previous time bucket (PTB) determined with reference to the current time; and performing a fourth operation in which a current time bucket flow table (CTBFT) is processed when the time bucket change state value has not been set, wherein the CTBFT stores temporary traffic flows generated in a current time bucket (CTB) including the current time.