0000891618-99-002260 10-Q/A 1 19990123 19990514 CISCO SYSTEMS INC 0000858877 3576 770059951 CA 0731 10-Q/A 34 000-18225 99623557 170 WEST TASMAN DRIVE SAN JOSE CA 95134-1706 4085264000 225 WEST TASMAN DRIVE SAN JOSE CA 95134-1706 10-Q/A 1 000089161899002260-001-seq1-10-q-a.txt AMENDMENT NO. 1 TO FORM 10-Q DATED 01/23/99