Recently the number of Internet users have been drastically increased with the introduction of WWW browsers, which requires accommodation study of TCP/IP on ATM networks. There are a number of problems in operating IP-over-ATM efficiently because of limited functions and overhead of IP. According to recent research, the alternatives to TCP/IP efficiently because of limited functions and overhead of IP. According to recent research, the alternatives to TCP/IP over ABR or UBR have been suggested, and the required capacity of switch buffer and problems in TCP/IP over ABR have been researched. In this paper, we address problems caused by the features of HTTP traffic and suggest a solution for TCP over ABR. The performance of the methods suggested in this paper is verified through simulation under limited conditions.