USER MANUAL – Z-PASS1/Z-PASS2
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The only difference is that no TCP connection is established and serial data are transported by UDP packets.
The configuration parameters are the same as those for the serial tunnel on TCP.
Also in this case, the tunnel can be established through the LAN (Ethernet) or through the WAN (Mobile
Network), also exploiting VPN connectivity.
WARNING!
In the Serial Tunnel Point-to-Point on UDP operating mode, just one connection is accepted for a given
serial port.
11.4
Serial Tunnel Point-to-Multipoint
The Serial Tunnel Point-to-Multipoint allows to create a tunnel with a master and more than one slave; on
the master side, the data received from the serial line are sent to all the slaves, by means of
multicast
transmission mode, in UDP packets.
To let the multicast work, the master and the slaves shall be part of the same
multicast group
, so there is a
“Multicast Group” parameter that shall be properly set; furthermore, for the Master Configuration have to
be defined “Destination Port” and “Multicast Interface” parameters, the latter shall be set to select the
network interface that allows to send the packets; for the slave configuration, “Listen Port” and “Multicast
Interface” are requested; the latter shall be set to select the network interface which allows to receive the
packets.
The tunnel can be established through the LAN (Ethernet) or through the VPN (Ethernet or 3G based).
WARNING!
In the Serial Tunnel Point-to-Multipoint operating mode, just one connection is accepted for a given serial
port.
