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BACKGROUND

The present invention relates to data center infrastructure, and more particularly, this invention relates to high speed look-up using look-up rules cached based on flow heuristics. Every network packet processor for Layer-2 and/or Layer-3 Switches requires one or more look-up tables in order to discover a set of operations to be performed on the packets received from other devices in the network. Look-up tables hold specific information, such as IPv4 Routing Tables, IPv6 Routing Tables. Address Resolution Protocol (ARP) Tables, Media Access Control (MAC) Tables, Access Control List (ACL) Tables, Host Specific Routes Tables, etc. Scaling of such look-up tables is critical in order to allow for the Scaling of packet processor chipsets used in devices which rely on these look-up tables. Larger Ternary Content Addressable Memory (TCAM) banks may solve the prob lem of scaling the number of look …