Etic Telecom RAS Series, Setup Manual

Page: 69 / 74

SETUP
DOC_DEV_Router setup guide_A
page 69
19.5 Raw multicast gateway
This gateway is designed to connect a serial device to several devices on an IP network.
It uses the "multicast" protocol that can simultaneously deliver an IP frame to many devices without increasing
the traffic: The RS232 data are transmitted in an IP frame with a particular IP address called multicast address;
all subscribers to this address can receive the frame.
To configure the gateway :
•
In the menu, choose Setup > IP-RS gateways > Transparent > Raw Multicast COMx
• Tick the Enable checkbox.
• Configure the following parameters.
Bitrate, Parity, Data, stop bits
Allow to set the bitrate and the format of the asynchronous serial link.
Receive buffer size
Set up the maximum length of an asynchronous string the gateway will store before transmitting it to the IP
network.
RS end frame timeout
Set up the delay the gateway will wait before declaring complete a string received from the asynchronous
device.
Once declared complete, the gateway will transmit the string to the IP network.
UDP port
Set the port number the gateway has to use.
Warning : If two gateways of the same type are active on the two serial ports, they can not use the same UDP
port number.
Multicast group IP address
Set the IP address assigned to the multicast group in conformance with the IANA rules.