Microhard Systems IP-921 Operating Manual page 103

6.0 Configuration
Multicast is a one-to-many
transmission of data over an
IP network. It is an efficient
method of transmitting the
same data to many recipients.
The recipients
members of the
multicast group.
TTL: Time to Live is the
number of hops a packet can
travel before being discarded.
In the context of multicast, a
TTL value of 1 restricts the
range of the packet to the
same subnet.
© Microhard Systems Inc.
UDP Point-to-Point: In this configuration the IP Series will send
serial data to a specifically-defined point, using UDP packets. This
same IP Series will accept UDP packets from that same point.
forwarded to
UDP Point-to-Multipoint (P): This mode is configured on an IP
Series which is to send multicast UDP packets; typically, the
MASTER in the IP Series network.
must me
specific
IP Protocol Config (continued)

Remote IP Address
IP address of distant device to which UDP packets
are sent when data received at serial port.
Default: 0.0.0.0

Remote Port
UDP port of distant device mentioned above.
Default: 20001

Listening Port
UDP port which the IP Series listens to (monitors).
UDP packets received on this port are
the unit's serial port.
Default: 20001

Multicast IP Address
A valid multicast address this unit uses to send
multicast UDP packets upon receiving data from
the serial port.
example of a valid multicast address.
Default: 224.1.1.1

Multicast Port
A UDP port that this IP Series will send UDP
packets to.
Point-to-Multipoint
should be configured to listen to this point in order
to receive multicast packets from this IP Series.
Default: 20001

Listening Port
The UDP port that this unit receives incoming data
on from multiple remote units.
Default: 20011

Time to Live
Time to live for the multicast packets.
Default: 1 (hop)
CONFIDENTIAL
IP9xx Series
The default value is a good
The Multipoint (MP - see the UDP
(MP) description) stations
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