Systems and methods for packet de-duplication

A packet switch system, comprising:

• a first port configured for receiving a first packet that includes a header, the header having a plurality of fields;
• and
• an integrated circuit configured for:
• determining whether the first packet is a duplicate packet using a first one of the plurality of fields according to a pre-determined field-checking hierarchy;
• wherein the pre-determined field-checking hierarchy prescribes the first one of the plurality of fields to be checked before a second one of the plurality of fields, the first one of the plurality of fields having a relatively higher change rate statistically than the second one of the plurality of fields;
• and
• wherein the integrated circuit is configured to determine the first packet as the duplicate packet when the first one of the plurality of fields matches a respective one of fields in a second packet that is received before the first packet, and when the first packet is received within a prescribed time period since the second packet is received.

A computer program product having a non-transitory medium storing a set of instructions, an execution of which causes a method of packet processing to be performed, the method comprising:

• receiving a first packet that includes a header, the header having a plurality of fields;
• and
• determining whether the first packet is a duplicate packet using a first one of the plurality of fields according to a pre-determined field-checking hierarchy;
• wherein the pre-determined field-checking hierarchy prescribes the first one of the plurality of fields to be checked before a second one of the plurality of fields, the first one of the plurality of fields having a relatively higher change rate statistically than the second one of the plurality of fields;
• and
• wherein the first packet is determined to be the duplicate packet when the first one of the plurality of fields matches a respective one of fields in a second packet that is received before the first packet, and when the first packet is received within a prescribed time period since the second packet is received.

A method of packet processing, comprising:

• receiving a first packet that includes a header, the header having a plurality of fields, one of the plurality of fields being an identification field;
• determining an identification value for the identification field in the header of the first packet;
• determining whether the identification value of the first packet matches an identification value in a header of a second packet;
• and
• using another one of the fields in the header of the first packet to determine whether the first packet is a duplicate packet when the identification value of the first packet matches the identification value of the second packet.

A packet switch system, comprising:

• a first port configured for receiving a first packet that includes a header, the header having a plurality of fields, one of the plurality of fields being an identification field;
• and
• an integrated circuit configured for:
• determining an identification value for the identification field in the header of the first packet;
• determining whether the identification value of the first packet matches an identification value in a header of a second packet;
• and
• using another one of the fields to determine whether the first packet is a duplicate packet when the identification value of the first packet matches the identification value of the second packet.

A computer program product having a non-transitory medium storing a set of instructions, an execution of which causes a method of packet processing to be performed, the method comprising:

• receiving a first packet that includes a header, the header having a plurality of fields, one of the plurality of fields being an identification field;
• determining an identification value for the identification field in the header of the first packet;
• determining whether the identification value of the first packet matches an identification value in a header of a second packet;
• and
• using another one of the fields to determine whether the first packet is a duplicate packet when the identification value of the first packet matches the identification value of the second packet.