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TCP/IP portsWhat do you mean by bi-directional ports? Do you mean TCP/IP ports or serial ports or... ?
-Aaron
What do you mean by bi-directional TCP/IP ports? By default the TCP/IP ports transmit and receive data and thus are bi-directional.
Do you mean FULL Duplex? Use SMIT, and make sure that the your switches are set to handle FULL duplex.
If the TCP/IP ports are above 1024 and not in use, you should be able to start whatever program/daemon that uses those ports and use them in pretty much whatever way you want. If you are getting only read or only write on those ports, that would be an application issue. (ports 1024 and below are only usable by the root user)
If the ports are already in use, you might pick different ports to use or see what program is using those ports. Some ports are reserved for applications/daemons and those are normally registered in /etc/services. To find out if a port is in use, you can use the command "netstat -an |grep LISTEN" This will show all ports that are listening for new connections.
-Aaron
[heada@host:/u/heada] grep ftp /etc/services
ftp-data 20/tcp # File Transfer [Default Data]
ftp-data 20/udp # File Transfer [Default Data]
ftp 21/tcp # File Transfer [Control]
ftp 21/udp # File Transfer [Control]
If the TCP/IP ports are above 1024 and not in use, you should be able to start whatever program/daemon that uses those ports and use them in pretty much whatever way you want. If you are getting only read or only write on those ports, that would be an application issue. (ports 1024 and below are only usable by the root user)
If the ports are already in use, you might pick different ports to use or see what program is using those ports. Some ports are reserved for applications/daemons and those are normally registered in /etc/services. To find out if a port is in use, you can use the command "netstat -an |grep LISTEN" This will show all ports that are listening for new connections.
-Aaron