EXHIBIT 21 COMPUTER NETWORK TECHNOLOGY CORPORATION Subsidiaries of the Registrant CNT INTERNATIONAL LTD. - ---------------------- - Incorporated under the English Companies Act - d/b/a CNT International Ltd. and CNTI CNT FRANCE S.A. - --------------- - Incorporated under French law - d/b/a CNT France S.A. and CNTF COMPUTER NETWORK TECHNOLOGY GMBH - -------------------------------- - Incorporated under German law CNTFS CORPORATION - ----------------- - Incorporated under Virgin Islands law CNTWARE VERNETZUNGSSYSTEME GMBH (51%) - ------------------------------- - Incorporated under German law - d/b/a CNTware COMPUTER NETWORK TECHNOLOGY (ASIA PACIFIC) PTY. LTD. - ---------------------------------------------------- - Incorporated under Australian Law - d/b/a CNT A/P CNT CHINA LIMITED - ----------------- - Incorporated under Hong Kong Law CNT JAPAN K.K. - -------------- - Incorporated under Japanese Law