Other Balance Sheet Details (Tables)

12 Months Ended

Oct. 31, 2011

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,
	2010		2011
Maintenance spares inventory, net	$	53,654	$	50,442
Deferred debt issuance costs, net	28,853		23,481
Embedded redemption feature	4,220		7,020
Restricted cash	37,796		27,507
Other	5,296		5,673
	$	129,819	$	114,123

Accrued liabilities

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

	October 31,
	2010		2011
Warranty	$	54,372	$	47,282
Compensation, payroll related tax and benefits	39,391		51,808
Vacation	20,412		27,808
Current restructuring liabilities	2,784		664
Interest payable	4,345		4,248
Other	72,690		65,194
	$	193,994	$	197,004

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
2009	$	37,258	$	—	$	19,286	$	16,348	$	40,196
2010	$	40,196	$	24,041	$	15,353	$	25,218	$	54,372
2011	$	54,372	$	—	$	18,451	$	25,541	$	47,282

Deferred revenue

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

	October 31,
	2010			2011
Products	$	31,187		$	42,915
Services	73,862			80,883
	105,049			123,798
Less current portion	(75,334		)	(99,373		)
Long-term deferred revenue	$	29,715		$	24,425