EXHIBIT 11 Computer Network Technology, Inc. Statement Re: Computation of Net Income Per Basic and Diluted Share (In thousands, except per share data) Weighed Average Per Share Net Income Shares Outstanding Amount ---------- ------------------ ------ Three Months ended September 30, 1999: Basic 2,749 23,441 0.12 Dilutive effect of Employee Stock purchase awards and options (1) - 2,266 (.01) ================================================== Diluted 2,749 25,707 0.11 ================================================== Three Months ended September 30, 1998: Basic 1,799 22,110 0.08 Dilutive effect of Employee Stock purchase awards and options (1) - 444 - =================================================== Diluted 1,799 22,554 0.08 =================================================== Nine Months ended September 30, 1999: Basic 7,232 22,998 0.31 Dilutive effect of Employee Stock purchase awards and options (1) - 2,554 (.03) =================================================== Diluted 7,232 25,552 0.28 =================================================== Nine Months ended September 30, 1998: Basic 3,038 22,090 0.14 Dilutive effect of Employee Stock purchase awards and options (1) - 231 - =================================================== Diluted 3,038 22,321 0.14 =================================================== (1) For the three and nine months ended September 30, 1999 and 1998, potential dilutive securities primarily consisting of outstanding stock options and shares issuable under the employee stock purchase plan are included in the computation of net income per diluted share using the treasury stock method.