Network Router User Manual

Multicast is not a concern when all the 852 devices share the same subnet. e following gures
illustrate the dierences between multicast and unicast.
Node Node
...
Node Node
...
Node Node
...
IP Network
ANSI 852 709.1/IP
Gateway/Router
ANSI 852 709.1/IP
Gateway/Router
Unit-Cast
Packet
A
B
C
DE
Source
Unit-Cast
Packet
Unit-Cast
Packet
Unit-Cast
Packet
Destination
Destination
Destination
Destination
Internet
Fig.1.8: Unicast
Node Node
...
Node Node
...
Node Node
...
IP Network
ANSI 852 709.1/IP
Gateway/Router
ANSI 852 709.1/IP
Gateway/Router
Multi-Cast
Packet
A
B
C
DE
Source
Internet
Multiple Destinations
Multiple Destinations
Fig.1.9: Mulitcast
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