Exhibit 11.1 SHIVA CORPORATION Computation of Basic and Diluted Net Income (Loss) Per Share (1) Year ended -------------------------------------------- January 3, December 28, December 30, 1998 1996 1995 ----------- ------------ ------------ 								 Numerator: Net income (loss) ($13,647,000) $16,841,000 ($ 4,852,000) 								 Denominator: Denominator for basic earnings per share--weighted average shares outstanding 29,266,263 28,424,797 25,079,951 								 Effect of dilutive securities: Stock options - 3,034,100 - ----------- ----------- ----------- Denominator for diluted earnings per share 29,266,263 31,458,897 25,079,951 								 Basic net income (loss) per share $ (0.47) $ 0.59 $ (0.19) 								 Diluted net income (loss) per share $ (0.47) $ 0.54 $ (0.19) - ------------------------- <FN> (1) Basic net loss per share is the same as diluted net loss per share because the effect of common equivalent shares is antidilutive.