Performance Analysis and Optimal Allocation of Layered Defense M/M/N Queueing Systems

Table 6

DE of three-layer defense.

1st-layer type	1st-layer DE	2nd-layer type	2nd-layer DE	3rd-layer type	3rd-layer DE	Total DE
II	43.200%	II	45.440%	I	55.520%	86.216%
II	48.960%	I	51.840%	II	46.560%	86.864%
II	43.200%	I	55.040%	I	55.040%	88.518%
I	54.560%	II	45.280%	II	46.720%	86.752%
I	56.800	I	55.360	II	43.040	89.016