Cluster I/O Protocols (CIP) Configuration and Management Manual (H06.16+, J06.05+)
• TCP_PAWS
This socket option, which was supported but not documented, is no longer supported. See
Table 18: Differences in Socket Options Defaults (page 193) for default behavior.
• TCP_PROBE_IDLE
This socket option, which was supported but not documented, is no longer supported. See
Table 18: Differences in Socket Options Defaults (page 193) for default behavior.
• TCP_PUSH
This socket option, which was supported but not documented, is no longer supported. See
Table 18: Differences in Socket Options Defaults (page 193) for default behavior.
• TCP_RXMTCNT
This socket option, which set the maximum time for a TCP retransmission timeout, is not
supported. See Table 18: Differences in Socket Options Defaults (page 193) for default behavior.
• TCP_RPTR2RXT
This socket option, which was supported but not documented, is no longer supported. See
Table 18: Differences in Socket Options Defaults (page 193) for default behavior.
• TCP_SACKENA
This socket option, which enabled TCP selective acknowledgements, is not supported. See
Table 18: Differences in Socket Options Defaults (page 193) for default behavior.
• TCP_TOTRXMTVAL
The TCP_TOTRXMTVAL socket option, which sets the maximum continuous time spent
retransmitting without receiving an acknowledgement from the other endpoint, is not supported
in CIP.
• TCP_TSOPTENA
This socket option, which was supported but not documented, is no longer supported. See
Table 18: Differences in Socket Options Defaults (page 193) for default behavior.
Level SOL_SOCKET
• SO_DONTROUTE
This socket option, which specifies not to route messages, is not supported. See Table 18:
Differences in Socket Options Defaults (page 193) for default behavior.
• SO_PMTU
This socket option, which was supported but not documented, is no longer supported. See
Table 18: Differences in Socket Options Defaults (page 193) for default behavior.
• SO_USELOOPBACK
This socket option, which was supported but not documented, is no longer supported. See
Table 18: Differences in Socket Options Defaults (page 193) for default behavior.
New Socket Option SO_ACCPTCONN
The SO_ACCEPTCONN socket option is not supported by conventional TCP/IP or TCP/IPv6, but is
supported by CIP.
192 IP CIP Migration, Compatibility and Operational Differences