EX-21.1 3 ex21120231028-subsidiaries.htm EX-21.1 Document

EXHIBIT 21.1


SubsidiaryJurisdiction of Incorporation or Organization
Ciena Communications, Inc.Delaware
Ciena Global Products Company, LTDUnited Kingdom
Ciena Canada ULCCanada
Ciena Switzerland GMBHSwitzerland
Ciena Global Holding, LPScotland