0001012870-01-500435 424B4 1 20010425 EXTREME NETWORKS INC 0001078271 3576 770430270 DE 0630 424B4 33 333-58734 1610898 3585 MONROE STREET SANTA CLARA CA 95051 4085792800 3585 MONROE STREET SANTA CLARA CA 95051 424B4 1 d424b4.txt PROSPECTUS FILED PURSUANT TO RULE 424 (B) (4)