Investigating the performance of Endace DAG monitoring hardware and Intel NICs in the context of lawful interception

SPLIT is a simple prototype Lawful Interception software system which is used to evaluate the viability of using both standard network cards and specialised monitoring hardware for the purpose. Lawful Interception requires reliable packet capture, filtering and protocol analysis on high bandwidth links. While standard NICs can take on these various roles, their performance is only adequate in certain situations. Further optimisations to SPLIT are required to reveal exact limits of the NICs, but it is clear that Endace DAG 3.7GF high performance monitoring cards improve performance and reliability.