<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONSOLIDATED FINANCIAL STATEMENTS OF COMPUTER NETWORK TECHNOLOGY CORPORATION AND
IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<RESTATED> 
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               JUN-30-1997
<CASH>                                           7,384
<SECURITIES>                                    22,422
<RECEIVABLES>                                   18,204
<ALLOWANCES>                                       775
<INVENTORY>                                     12,583
<CURRENT-ASSETS>                                62,971
<PP&E>                                          29,579
<DEPRECIATION>                                  18,581
<TOTAL-ASSETS>                                  79,988
<CURRENT-LIABILITIES>                           20,199
<BONDS>                                            808
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                           225
<OTHER-SE>                                      58,755
<TOTAL-LIABILITY-AND-EQUITY>                    79,988
<SALES>                                         29,197
<TOTAL-REVENUES>                                42,443
<CGS>                                            8,943
<TOTAL-COSTS>                                   18,040
<OTHER-EXPENSES>                                 8,056<F1>
<LOSS-PROVISION>                                    10
<INTEREST-EXPENSE>                                  16
<INCOME-PRETAX>                                  (767)
<INCOME-TAX>                                     (287)
<INCOME-CONTINUING>                              (480)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     (480)
<EPS-PRIMARY>                                    (.02)<F2>
<EPS-DILUTED>                                    (.02)
<FN>
<F1>Amount presented represents engineering and development expense
<F2>Amount presented represents Basic Net Income (loss) per share
</FN>