Information on reportable segments is as follows (in millions):



	Three Months Ended December 30, 2017
	Network and Service Enablement
	Network Enablement			Service Enablement			Network and Service Enablement			Optical Security and Performance Products			Total Segment Measures			Reconciling Items			Consolidated GAAP Measures
Net revenue	$	121.5		$	32.1		$	153.6		$	48.2		$	201.8		$	—		$	201.8

Gross profit	73.8			22.4			96.2			26.2			122.4			(6.3		)	116.1
Gross margin	60.7		%	69.8		%	62.6		%	54.4		%	60.7		%				57.5		%

Operating income							8.0			17.4			25.4			(21.7		)	3.7
Operating margin							5.2		%	36.1		%	12.6		%				1.8		%



	Three Months Ended December 31, 2016
	Network and Service Enablement
	Network Enablement			Service Enablement			Network and Service Enablement			Optical Security and Performance Products			Total Segment Measures			Reconciling Items			Consolidated GAAP Measures
Net revenue	$	117.0		$	40.6		$	157.6		$	48.9		$	206.5		$	—		$	206.5

Gross profit	74.6			27.1			101.7			28.2			129.9			(5.2		)	124.7
Gross margin	63.8		%	66.7		%	64.5		%	57.7		%	62.9		%				60.4		%

Operating income							6.0			20.9			26.9			(20.2		)	6.7
Operating margin							3.8		%	42.7		%	13.0		%				3.2		%



	Three Months Ended
	December 30, 2017			December 31, 2016
Corporate reconciling items impacting gross profit:
Total segment gross profit	$	122.4		$	129.9
Stock-based compensation	(0.7		)	(1.0		)
Amortization of intangibles	(4.1		)	(3.7		)
Other charges unrelated to core operating performance (1)	(1.5		)	(0.5		)
GAAP gross profit	$	116.1		$	124.7

Corporate reconciling items impacting operating income:
Total segment operating income	$	25.4		$	26.9
Stock-based compensation	(7.7		)	(9.1		)
Amortization of intangibles	(7.5		)	(7.1		)
Other charges unrelated to core operating performance (1)	(4.0		)	(2.2		)
Restructuring and related charges	(2.5		)	(1.8		)
GAAP operating income	$	3.7		$	6.7

(1) During the three months ended December 30, 2017 and December 31, 2016, other charges unrelated to core operating performance primarily consisted of acquisition related costs, amortization of inventory step-up and loss on disposal of long-lived assets.



	Six Months Ended December 30, 2017
	Network and Service Enablement
	Network Enablement			Service Enablement			Network and Service Enablement			Optical Security and Performance Products			Total Segment Measures			Reconciling Items			Consolidated GAAP Measures
Net revenue	$	233.3		$	61.1		$	294.4		$	102.6		$	397.0		$	—		$	397.0

Gross profit	144.4			42.9			187.3			57.6			244.9			(12.6		)	232.3
Gross margin	61.9		%	70.2		%	63.6		%	56.1		%	61.7		%				58.5		%

Operating income							15.2			39.6			54.8			(41.1		)	13.7
Operating margin							5.2		%	38.6		%	13.8		%				3.5		%



	Six Months Ended December 31, 2016
	Network and Service Enablement
	Network Enablement			Service Enablement			Network and Service Enablement			Optical Security and Performance Products			Total Segment Measures			Reconciling Items			Consolidated GAAP Measures
Net revenue	$	235.6		$	77.0		$	312.6		$	104.7		$	417.3		$	—		$	417.3

Gross profit	152.0			48.4			200.4			59.8			260.2			(10.4		)	249.8
Gross margin	64.5		%	62.9		%	64.1		%	57.1		%	62.4		%				59.9		%

Operating income							10.1			44.3			54.4			(37.6		)	16.8
Operating margin							3.2		%	42.3		%	13.0		%				4.0		%



	Six Months Ended
	December 30, 2017			December 31, 2016
Corporate reconciling items impacting gross profit:
Total segment gross profit	$	244.9		$	260.2
Stock-based compensation	(1.6		)	(2.0		)
Amortization of intangibles	(8.2		)	(7.5		)
Other charges unrelated to core operating performance (1)	(2.8		)	(0.9		)
GAAP gross profit	$	232.3		$	249.8

Corporate reconciling items impacting operating income:
Total segment operating income	$	54.8		$	54.4
Stock-based compensation	(15.2		)	(17.8		)
Amortization of intangibles	(14.7		)	(14.4		)
Other charges unrelated to core operating performance (1)	(7.2		)	(3.6		)
Restructuring and related charges	(4.0		)	(1.8		)
GAAP operating income (loss) from continuing operations	$	13.7		$	16.8

(1) During the six months ended December 30, 2017 and December 31, 2016, other charges unrelated to core operating performance primarily consisted of acquisition related costs, amortization of inventory step-up, loss on disposal of long-lived assets and VIAVI specific charges related to the separation.