Packet transfer apparatus with the function of flow detection and flow management method
AssigneeHitachi, Ltd.
InventorsTakeki Yazaki, Yuichi Ishikawa
Life of this patent
Estimating the term…
Abstract
A packet transfer apparatus having: a flow detector 30 for identifying a flow to which an input packet belongs from header information of the input packet and outputting a flow bundle identifier peculiar to the identified flow or a flow bundle identifier common to the identified flow and at least another flow; and a controller 40 having an information table 43 including a plurality of information entries corresponding to the flow bundle identifier, for reading out one of the information entries from the information table on the basis of the flow bundle identifier received from the flow detector and performing a predetermined computing process.
Claims15
A packet transfer apparatus connected to a plurality of input lines and a plurality of output lines, for transferring an input packet received from any one of the input lines to one of the output lines specified by header information of the received packet, comprising:
- a flow detector for identifying a flow to which an input packet belongs from header information of the input packet and outputting a flow bundle identifier peculiar to the identified flow or a flow bundle identifier common to the identified flow and at least another flow;
- and
- a controller having an information table including a plurality of information entries corresponding to the flow bundle identifier, for reading out one of the information entries from said information table on the basis of the flow bundle identifier received from said flow detector and performing a predetermined computing process.
A packet transfer apparatus having a plurality of input line interfaces connected to input lines, a plurality of output line interfaces connected to output lines, and a packet switching unit for transferring input packets received by said input line interfaces to one of said output line interfaces specified by header information of each of said input packets, comprising:
- a flow detector for receiving header information of an input packet from each of said input line interfaces, identifying a flow to which said input packet belongs from the header information received, and outputting a flow bundle identifier peculiar to the identified flow or a flow bundle identifier common to the identified flow and at least another flow;
- and
- a controller having an information table including a plurality of information entries corresponding to flow bundle identifiers, for reading out one of the information entries from said information table on the basis of the flow bundle identifier received from said flow detector and performing a predetermined computing process.
A flow management method comprising the steps of:
- identifying a flow to which an input packet belongs from header information of the input packet;
- assigning a flow bundle identifier peculiar to the identified flow or a flow bundle identifier common to the identified flow and at least another flow;
- and
- executing a predetermined computing process on the basis of the contents of an information entry prepared in correspondence with the flow bundle identifier and header information of said input packet.
Dependencies are inferred from the claim text.