0001095811-01-000021 S-3/A 2 20010103 CISCO SYSTEMS INC 0000858877 3576 770059951 CA 0731 S-3/A 33 333-51118 1500839 170 W TASMAN DR SAN JOSE CA 95134-1706 4085264000 225 WEST TASMAN DR SAN JOSE CA 95134-1706 S-3/A 1 f67349a2s-3a.txt AMENDMENT NO. 2 TO FORM S-3 EX-5.1 2 f67349a2ex5-1.txt EXHIBIT 5.1