Article ID: 100697
Article Last Modified on 9/30/2003
APPLIES TO
- Microsoft LAN Manager 2.2 Standard Edition
This article was previously published under Q100697
SYMPTOMS
Difficulty connecting to IBM mainframes with Microsoft TCP/IP utilities such as Telnet and FTP.
CAUSE
IBM mainframes appear to expect the TCP/IP "push" bit to be set on all frames for Telnet and FTP. The Microsoft LAN Manager TCP/IP stack and utilities don't always set the "push" bit by default.
RESOLUTION
The Microsoft Windows for Workgroups TCP/IP stack recognizes a new PROTOCOL.INI parameter for more reliable Telnet and FTP sessions to IBM mainframes. Add this line to the [tcpip_xif] section:
forcepushbit = 1
Additional query words: wfw wfwg 2.20 session hang RFC 793 smtp gateway 2.2
Keywords: KB100697
