Other Balance Sheet Details (Tables)

12 Months Ended

Oct. 31, 2012

Balance Sheet Related Disclosures [Abstract]

Other long-term assets

As of the dates indicated, other long-term assets are comprised of the following (in thousands):

	October 31,
	2011		2012
Maintenance spares inventory, net	$	50,442	$	57,548
Deferred debt issuance costs, net	23,481		20,575
Embedded redemption feature	7,020		420
Restricted cash	27,507		2,413
Other	5,673		3,780
	$	114,123	$	84,736

Accrued liabilities

As of the dates indicated, accrued liabilities are comprised of the following (in thousands):

	October 31,
	2011		2012
Warranty	$	47,282	$	55,132
Compensation, payroll related tax and benefits	51,808		48,885
Vacation	27,808		29,581
Current restructuring liabilities	664		3,516
Interest payable	4,248		4,404
Other	65,194		68,022
	$	197,004	$	209,540

Accrued warranty

The following table summarizes the activity in Ciena’s accrued warranty for the fiscal years indicated (in thousands):

Year ended	Beginning								Balance at end
October 31,	Balance		Acquired		Provisions		Settlements		of period
2010	$	40,196	$	24,041	$	15,353	$	25,218	$	54,372
2011	$	54,372	$	—	$	18,451	$	25,541	$	47,282
2012	$	47,282	$	—	$	33,418	$	25,568	$	55,132

Deferred revenue

As of the dates indicated, deferred revenue is comprised of the following (in thousands):

	October 31,
	2011			2012
Products	$	42,915		$	29,279
Services	80,883			77,797
	123,798			107,076
Less current portion	(99,373		)	(79,516		)
Long-term deferred revenue	$	24,425		$	27,560