OTHER BALANCE SHEET DETAILS (Tables)

6 Months Ended

Apr. 27, 2024

Balance Sheet Related Disclosures [Abstract]

Schedule of Other Long-term Assets

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

	April 27, 2024		October 28, 2023
Maintenance spares inventory, net	$	62,331	$	54,042
Forward starting interest rate swaps	30,296		24,953
Equity investments(1)	16,304		48
Deferred compensation plan assets	14,479		11,456
Capitalized contract acquisition costs	7,471		6,879
Cloud computing arrangements(2)	7,265		8,589
Deferred debt issuance costs, net	1,879		1,956
Restricted cash	166		168
Other	11,005		8,362
	$	151,196	$	116,453

(1) Increase is due to an equity investment in a privately held technology company during the second quarter of fiscal 2024.

(2) Amortization of cloud computing arrangements was $2.4 million and $1.2 million during the first six months of fiscal 2024 and fiscal 2023, respectively.

Schedule of Accrued Liabilities

As of the dates indicated, accrued liabilities and other short-term obligations are comprised of the following (in thousands):

	April 27, 2024		October 28, 2023
Compensation, payroll related tax and benefits	$	130,308	$	159,530
Warranty	49,896		57,089
Vacation	31,687		29,503
Income taxes payable	7,438		16,341
Foreign currency forward contracts	6,173		14,509
Interest payable	4,807		4,514
Finance lease liabilities	4,234		3,953
Other	120,715		145,980
	$	355,258	$	431,419

Schedule of Accrued Warranties

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

	Beginning Balance		Current Period Provisions	Settlements	Ending Balance
Six Months Ended April 29, 2023	$	45,503	13,577	(9,893)	$	49,187
Six Months Ended April 27, 2024	$	57,089	8,629	(15,822)	$	49,896

Schedule of Contract Balances

The following table provides information about receivables, contract assets and contract liabilities (deferred revenue) from contracts with customers as of the dates indicated (in thousands):

	Balance at April 27, 2024		Balance at October 28, 2023
Accounts receivable, net	$	840,131	$	1,003,876
Contract assets for unbilled accounts receivable, net	$	151,896	$	150,312
Deferred revenue	$	277,354	$	228,460

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

	April 27, 2024		October 28, 2023
Products	$	22,583	$	28,353
Services	254,771		200,107
Total deferred revenue	277,354		228,460
Less current portion	(196,989)		(154,419)
Long-term deferred revenue	$	80,365	$	74,041