GOODWILL (Tables)

6 Months Ended

Apr. 30, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of goodwill

The following table presents the goodwill allocated to Ciena's applicable reportable segments as of the dates indicated (in thousands):

	Balance at October 31, 2016		Acquisitions		Impairments		Translation			Balance at April 30, 2017
Software and Software-Related Services	$	201,428	$	—	$	—	$	—		$	201,428
Networking Platforms	65,546		—		—		(201		)	65,345
Total	$	266,974	$	—	$	—	$	(201	)	$	266,773