<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>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               SEP-30-1997
<CASH>                                          10,083
<SECURITIES>                                    18,269
<RECEIVABLES>                                   19,256
<ALLOWANCES>                                       704
<INVENTORY>                                     12,087
<CURRENT-ASSETS>                                62,232
<PP&E>                                          31,492
<DEPRECIATION>                                  19,765
<TOTAL-ASSETS>                                  81,042
<CURRENT-LIABILITIES>                           22,020
<BONDS>                                            747
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                           223
<OTHER-SE>                                      58,052
<TOTAL-LIABILITY-AND-EQUITY>                    81,042
<SALES>                                         46,042
<TOTAL-REVENUES>                                66,253
<CGS>                                           14,450
<TOTAL-COSTS>                                   28,124
<OTHER-EXPENSES>                                12,243<F1>
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                  34
<INCOME-PRETAX>                                  (170)
<INCOME-TAX>                                      (62)
<INCOME-CONTINUING>                              (108)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     (108)
<EPS-PRIMARY>                                    (.00)<F2>
<EPS-DILUTED>                                    (.00)
<FN>
<F1>Amount presented represents engineering and development expense
<F2>Amount presented represents Basic Net Income (loss) per share
</FN>