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Other Balance Sheet Details
 6 Months Ended
May 01, 2021
Balance Sheet Related Disclosures [Abstract]  
Other Balance Sheet Details OTHER BALANCE SHEET DETAILS
As of the dates indicated, accrued liabilities and other short-term obligations are comprised of the following (in thousands):
May 1,
2021		October 31,
2020
Compensation, payroll related tax and benefits (1)
$114,119 $135,462 
Warranty48,123 49,868 
Vacation30,612 26,945 
Finance lease obligations3,245 2,836 
Interest payable665 672 
Other133,296 118,349 
 $330,060 $334,132 

(1) Reduction is primarily due to the timing of bonus payments to employees under Ciena’s annual cash incentive compensation plan.

The following table summarizes the activity in Ciena’s accrued warranty for the periods indicated (in thousands):
Beginning BalanceCurrent Period ProvisionsSettlementsEnding Balance
Six Months Ended May 2, 2020$48,498 13,793 (10,428)$51,863 
Six Months Ended May 1, 2021$49,868 7,937 (9,682)$48,123 
As of the dates indicated, deferred revenue is comprised of the following (in thousands):
May 1,
2021		October 31,
2020
Products$13,257 $17,534 
Services191,042 140,829 
 204,299 158,363 
Less current portion(147,075)(108,700)
Long-term deferred revenue$57,224 $49,663