NOTE: Max. user data length in a single datagram processed by the Terminal server is 8192
Bytes.
■
TCP proxy*
Compared to UDP, the TCP protocol generates more load (longer headers, extra handshake data-
grams), which in some circumstances may significantly reduce the user data throughput in a nar-
rowband radio modem network. The TCP proxy module converts TCP to UDP (and vice-versa) so
that only UDP datagrams are transferred over the Radio channel. TCP sessions are maintained
only locally between the end RipEX and the connected application device (at both ends of the RipEX
network).
NOTE 1: The TCP proxy module is activated and configured independently in each end RipEX. To
successfully handle an end-to-end application TCP session, the two respective end RipEXes have
to be configured properly to match the same destination and source address/port pairs.
NOTE 2: Some applications use the TCP session status or handshake datagrams (TCP ACK) RTT
for important decisions at the application level. It is not recommended to use TCP proxy with such
applications, since the status of the local TCP sessions at the respective ends of the RipEX network
is not synchronized. It is also highly recommended to use TCP proxy only with the ACK setting „On"
(Settings/Device/Operating mode). Nevertheless be aware that any individual datagram can be lost.
The locally run TCP sessions cannot guarantee 100% data integrity end-to-end.
NOTE 3: RipEX can handle up to 100 concurrent TCP proxy connections.
List box: On, Off
Default = Off
TCP Inactivity [s]
Default = 120
Timeout in sec for which the TCP socket in RipEX is kept active after the last data reception or
transmission.
IP
IP address or interval of IP addresses (e.g.: 192.168.20.20 – 192.168.20.26) for which the
TCP/UDP conversion is done.
0.0.0.0 means all IP addresses.
Port
Port or interval of Ports (e.g.: 40100 – 40200), in conjunction with IP addresses in the same line,
for which the TCP/UDP conversion is done.
Direction
Dst – IP and Port as defined above are considered as Destination in the received packet
Src – IP and Port as defined above are considered as Source in the received packet
Note
You may add a note to each address up to 16 characters long (UTF8 is supported) for your
convenience. (E.g. "Remote unit #1 etc.). Following characters are not allowed:
" (Double quote)
\ (Backslash)
$ (Dollar symbol)
; (Semicolon)
139
© RACOM s.r.o. – RipEX Radio modem & Router
Advanced Configuration
Summary of Contents for RipEX
Page 2: ......
